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I moved my domain to UpCloud (on the other side of the world) from Vultr (Sydney) and could not be happier with the performance.

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I moved my domain to UpCloud (on the other side of the world) from Vultr (Sydney) and could not be happier with the performance. Here is what I did to set up a complete Ubuntu 18.04 system (NGINX, PHP, MySQL, WordPress etc). This is not a paid review (just me documenting my steps over 2 days).

Background (CPanel hosts)

In 1999 I hosted my first domain (www.fearby.com) on a host in Seattle (for $10 USD a month), the host used CPanel and all was good.  After a decade I was using the domain more for online development and the website was now too slow (I think I was on dial-up or ADSL 1 at the time). I moved my domain to an Australian host (for $25 a month).

After 8 years the domain host was sold and performance remained mediocre. After another year the new host was sold again and performance was terrible.

I started receiving Resource Limit Is Reached warnings (basically this was a plot by the new CPanel host to say “Pay us more and this message will go away”).

Page load times were near 30 seconds.

cpenal_usage_exceeded

The straw that broke the camel’s back was their demand of $150/year for a dodgy SSL certificate.

I needed to move to a self-managed server where I was in control.

Buying a Domain Name

Buy a domain name from Namecheap here.

Domain names for just 88 cents!

Self Managed Server

I found a good web IDE ( http://www.c9.io/ ) that allowed me to connect to a cloud VM.  C9 allowed me to open many files and terminal windows and reconnect to them later. Don’t get excited, though, as AWS has purchased C9 and it’s not the same.

C9 IDE

C9 IDE

I spun up a Digital Ocean Server at the closest data centre in Singapore. Here was my setup guide creating a Digital Ocean VM, connecting to it with C9 and configuring it. I moved my email to G Suite and moved my WordPress to Digital Ocean (other guides here and here).

I was happy since I could now send emails via CLI/code, set up free SSL certs, add second domain email to G Suite and Secure G Suite. No more usage limit errors either.

Self-managing servers require more work but it is more rewarding (flexible, faster and cheaper).  Page load times were now near 20 seconds (10-second improvement).

Latency Issue

Over 6 months, performance on Digital Ocean (in Singapore) from Australia started to drop (mentioned here).  I tried upgrading the memory but that did not help (latency was king).

Moved the website to Australia

I moved my domain to Vultr in Australia (guide here and here). All was good for a year until traffic growth started to increase.

Blog Growth

I tried upgrading the memory on Vultr and I setup PHP child workers, set up Cloudflare.

GT Metrix scores were about a “B” and Google Page Speed Scores were in the lower 40’s. Page loads were about 14 seconds (5-second improvement).

Tweaking WordPress

I set up an image compression plugin in WordPress then set up a cloud image compression and CDN Plugin from the same vendor.  Page Speed info here.

GT Metrix scores were now occasionally an “A” and Page Speed scores were in the lower 20’s. Page loads were about 3-5 seconds (10-second improvement).

A mixed bag from Vultr (more optimisation and performance improvements were needed).

This screenshot is showing poor www.gtmetrix.com scores , pool google page speed index scores and upgrading from 1GB to 2GB memory on my server.

Google Chrome Developer Console Audit Results on Vultr hosted website were not very good (I stopped checking as nothing helped).

This is a screenshot showing poor site performance (screenshot taken in Google Dev tools audit feature)

The problem was the Vultr server (400km away in Sydney) was offline (my issue) and everything above (adding more memory, adding 2x CDN’s (EWWW and Cloudflare), adding PHP Child workers etc) did not seem to help???

Enter UpCloud…

Recently, a friend sent a link to a blog article about a host called “UpCloud” who promised “Faster than SSD” performance.  This can’t be right: “Faster than SSD”? I was intrigued. I wanted to check it out as I thought nothing was faster than SSD (well, maybe RAM).

I signed up for a trial and ran a disk IO test (read the review here) and I was shocked. It’s fast. Very fast.

Summary: UpCloud was twice as fast (Disk IO and CPU) as Vultr (+ an optional $4/m firewall and $3/m for 1x backup).

This is a screenshot showing Vultr.com servers getting half the read and write disk io performance compared to upcloud.com.

fyi: Labels above are K Bytes per second. iozone loops through all file size from 4 KB to 16,348 KB and measures through the reads per second. To be honest, the meaning of the numbers doesn’t interest me, I just want to compare apples to apples.

This is am image showing iozone results breakdown chart (kbytes per sec on vertical axis, file size in horizontal axis and transfer size on third access)

(image snip from http://www.iozone.org/ which explains the numbers)

I might have to copy my website on UpCloud and see how fast it is.

Where to Deploy and Pricing

UpCloud Pricing: https://www.upcloud.com/pricing/

UpCloud Pricing

UpCloud does not have a data centre in Australia yet so why choose UpCloud?

Most of my site’s visitors are based in the US and UpCloud have disk IO twice as fast as Vultr (win-win?).  I could deploy to Chicago?

This image sows most of my visitors are in the US

My site’s traffic is growing and I need to ensure the site is fast enough in the future.

This image shows that most of my sites visitors are hitting my site on week days.

Creating an UpCloud VM

I used a friend’s referral code and signed up to create my first VM.

FYI: use my Referral code and get $25 free credit.  Sign up only takes 2 minutes.

https://www.upcloud.com/register/?promo=D84793

When you click the link above you will receive 25$ to try out serves for 3 days. You can exit his trail and deposit $10 into UpCloud.

Trial Limitations

The trial mode restrictions are as following:

* Cloud servers can only be accessed using SSH, RDP, HTTP or HTTPS protocols
* Cloud servers are not allowed to send outgoing e-mails or to create outbound SSH/RDP connections
* The internet connection is restricted to 100 Mbps (compared to 500 Mbps for non-trial accounts)
* After your 72 hours free trial, your services will be deleted unless you make a one-time deposit of $10

UpCloud Links

The UpCloud support page is located here: https://www.upcloud.com/support/

More UpCloud links to read:

Signing up to UpCloud

Navigate to https://upcloud.com/signup and add your username, password and email address and click signup.

New UpCloud Signup Page

Add your address and payment details and click proceed (you don’t need to pay anything ($1 may be charged and instantly refunded to verify the card)

Add address and payment details

That’s it, check yout email.

Signup Done

Look for the UpCloud email and click https://my.upcloud.com/

Check Email

Now login

Login to UpCloud

Now I can see a dashboard 🙂

UpCloud Dashboard

I was happy to see 24/7 support is available.

This image shows the www.upcloud.com live chat

I opted in for the new dashboard

UpCloud new new dashboard

Deploy My First UpCloud Server

This is how I deployed a server.

Note: If you are going to deploy a server consider using my referral code and get $25 credit for free.

Under the “deploy a server” widget I named the server and chose a location (I think I was supposed to use an FQDN name -e.g., “fearby.com”). The deployment worked though. I clicked continue, then more options were made available:

  1. Enter a short server description.
  2. Choose a location (Frankfurt, Helsinki, Amsterdam, Singapore, London and Chicago)
  3. Choose the number of CPU’s and amount of memory
  4. Specify disk number/names and type (MaxIOPS or HDD).
  5. Choose an Operating System
  6. Select a Timezone
  7. Define SSH Keys for access
  8. Allowed login methods
  9. Choose hardware adapter types
  10. Where the send the login password

Deploy Server

FYI: How to generate a new SSH Key (on OSX or Ubuntu)

Output

Did the key export? (yes)

> /temp# ls /temp/ -al
> drwxr-xr-x 2 root root 4096 Jun 9 15:33 .
> drwxr-xr-x 27 root root 4096 Jun 8 14:25 ..
> -rw——- 1 user user 1766 Jun 9 15:33 example_rsa
> -rw-r–r– 1 user user 396 Jun 9 15:33 example_rsa.pub

“example_rsa” is the private key and “example_rsa.pub “is the public key.

  • The public key needs to be added to the server to allow access.
  • The private key needs to be added to any local ssh program used for remote access.

Initialisation script (after deployment)

I was pleased to see an initialization script section that calls actions after the server is deployed. I configured the initialisation script to pull down a few GB of backups from my Vultr website in Sydney (files now removed).

This was my Initialisation script:

Confirm and Deploy

I clicked “Confirm and deploy” but I had an alert that said trial mode can only deploy servers up to 1024MB of memory.

This image shows I cant deploy servers with 2/GB in trial modeExiting UpCloud Trial Mode

I opened the dashboard and clicked My Account then Billing, I could see the $25 referral credit but I guess I can’t use that in Trial.

I exited trial mode by depositing $10 (USD).

View Billing Details

Make a manual 1-time deposit of $10 to exit trial mode.

Deposit $10 to exit the trial

FYI: Server prices are listed below (or view prices here).

UpCloud Pricing

Now I can go back and deploy the server with the same settings above (1x CPU, 2GB Memory, Ubuntu 18.04, MaxIOPS Storage etc)

Deployment takes a few minutes and depending on how you specified a password may be emailed to you.

UpCloud Server Deployed

The server is now deployed; now I can connect to it with my SSH program (vSSH).  Simply add the server’s IP, username, password and the SSH private key (generated above) to your ssh program of choice.

fyi: The public key contents start with “ssh-rsa”.

This image shows me connecting to my sever via ssh

I noticed that the initialisation script downloaded my 2+GB of files already. Nice.

UpCloud Billing Breakdown

I can now see on the UpCloud billing page in my dashboard that credit is deducted daily (68c); at this rate, I have 49 days credit left?

Billing Breakdown

I can manually deposit funds or set up automatic payments at any time 🙂

UpCloud Backup Options

You do not need to setup backups but in case you want to roll back (if things stuff up), it is a good idea. Backups are an additional charge.

I have set up automatic daily backups with an auto deletion after 2 days

To view backup scheduled click on your deployed server then click backup

List of UpCloud Backups

Note: Backups are charged at $0.056 for every GB stored – so $5.60 for every 100GB per month (half that for 50GB etc)

You can take manual backups at any time (and only be charged for the hour)

UpCloud Firewall Options

I set up a firewall at UpCloud to only allow the minimum number of ports (UpCloud DNS, HTTP, HTTPS and My IP to port 22).  The firewall feature is charged at $0.0056 an hour ($4.03 a month)

I love the ability to set firewall rules on incoming, destination and outgoing ports.

To view your firewall click on your deployed server then click firewall

UpCloud firewall

Update: I modified my firewall to allow inbound ICMP (IPv4/IPv6) and UDP (IPv4/IPv6) packets.

(Note: Old firewall screenshot)

Firewall Rules Allow port 80, 443 and DNS

Because my internet provider has a dynamic IP, I set up a VPN with a static IP and whitelisted it for backdoor access.

Local Ubuntu ufw Firewall

I duplicated the rules in my local ufw (2nd level) firewall (and blocked mail)

UpCloud Download Speeds

I pulled down a 1.8GB Ubuntu 18.08 Desktop ISO 3 times from gigenet.com and the file downloaded in 32 seconds (57MB/sec). Nice.

Install Common Ubuntu Packages

I installed common Ubuntu packages.

Timezone

I checked the server’s time (I thought this was auto set before I deployed)?

I reset the time to Australia/Sydney.

Now the timezone is set 🙂

Shell History

I increased the shell history.

SSH Login

I created a ~/.ssh/authorized_keys file and added my SSH public key to allow password-less logins.

I added my pubic ssh key, then exited the ssh session and logged back in. I can now log in without a password.

Install NGINX

nginx/1.14.0 is now installed.

A quick GT Metrix test.

This image shows awesome static nginx performance ratings of of 99%

Install MySQL

Run these commands to install and secure MySQL.

Securing the MySQL server deployment.
> Would you like to setup VALIDATE PASSWORD plugin?: n
> New password: **********************************************
> Re-enter new password: **********************************************
> Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
> Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
> Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
> Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
> Success.

I disabled the validate password plugin because I hate it.

MySQL Ver 14.14 Distrib 5.7.22 is now installed.

Set MySQL root login password type

Set MySQL root user to authenticate via “mysql_native_password”. Run the “mysql” command.

Now let’s set the root password authentication method to “mysql_native_password”

Check authentication method.

Now we need to flush permissions.

Done.

Install PHP

Install PHP 7.2

PHP 7.2.5, Zend Engine v3.2.0 with Zend OPcache v7.2.5-1 is now installed. Do update PHP frequently.

I made the following changes in /etc/php/7.2/fpm/php.ini

> cgi.fix_pathinfo=0
> max_input_vars = 1000
> memory_limit = 1024M
> max_file_uploads = 20M
> post_max_size = 20M

Install PHP Modules

sudo apt-get install php-pear php7.2-curl php7.2-dev php7.2-mbstring php7.2-zip php7.2-mysql php7.2-xml

Install PHP FPM

Configure PHP FPM config.

Edit /etc/php/7.2/fpm/php.ini

> cgi.fix_pathinfo=0
> max_input_vars = 1000
> memory_limit = 1024M
> max_file_uploads = 20M
> post_max_size = 20M

Reload php sudo service.

Install PHP Modules

Configuring NGINX

If you are not comfortable editing NGINX config files read here, here and here.

I made a new “www root” folder, set permissions and created a default html file.

I edited the “root” key in “/etc/nginx/sites-enabled/default” file and set the root a new location (e.g., “/www-root”)

I added these performance tweaks to /etc/nginx/nginx.conf

> worker_cpu_affinity auto;
> worker_rlimit_nofile 100000

I add the following lines to “http {” section in /etc/nginx/nginx.conf

Check NGINX Status

Install Open SSL that supports TLS 1.3

This is a work in progress. The steps work just fine for me on Ubuntu 16.04. but not Ubuntu 18.04.?

Installing Adminer MySQL GUI

I will use the PHP based Adminer MySQL GUI to export and import my blog from one server to another. All I needed to do is install it on both servers (simple 1 file download)

Use Adminer to Export My Blog (on Vultr)

On the original server open Adminer (http) and..

  1. Login with the MySQL root account
  2. Open your database
  3. Choose “Save” as the output
  4. Click on Export

This image shows the export of the wordpress adminer page

Save the “.sql” file.

I used Adminer on the UpCloud server to Import My Blog

FYI: Depending on the size of your database backup you may need to temporarily increase your upload and post sizes limits in PHP and NGINX before you can import your database.

Edit /etc/php/7.2/fpm/php.ini
> max_file_uploads = 100M
> post_max_size =100M

And Edit: /etc/nginx/nginx.conf
> client_max_body_size 100M;

Don’t forget to reload NGINX config and restart NGINX and PHP. Take note of the maximum allowed file size in the screenshot below. I temporarily increased my upload limits to 100MB in order to restore my 87MB blog.

Now I could open Adminer on my UpCloud server.

  1. Create a new database
  2. Click on the database and click Import
  3. Choose the SQL file
  4. Click Execute to import it

Import MuSQL backup with Adminer

Don’t forget to create a user and assign permissions (as required – check your wp-config.php file).

Import MySQL Database

Tip: Don’t forget to lower the maximum upload file size and max post size after you import your database,

Cloudflare DNS

I use Cloudflare to manage DNS, so I need to tell it about my new server.

You can get your server’s IP details from the UpCloud dashboard.

Find IP

At Cloudflare update your DNS details to point to the server’s new IPv4 (“A Record”) and IPv6 (“AAAA Record”).

Cloudflare DNS

Domain Error

I waited an hour and my website was suddenly unavailable.  At first, I thought this was Cloudflare forcing the redirection of my domain to HTTP (that was not yet set up).

DNS Not Replicated Yet

I chatted with UpCloud chat on their webpage and they kindly assisted me to diagnose all the common issues like DNS values, DNS replication, Cloudflare settings and the error was pinpointed to my NGINX installation.  All NGINX config settings were ok from what we could see?  I uninstalled NGINX and reinstalled it (and that fixed it). Thanks UpCloud Support 🙂

Reinstalled NGINX

I reinstalled NGINX and reconfigured /etc/nginx/nginx.conf (I downloaded my SSL cert from my old server just in case).

Here is my /etc/nginx/nginx.conf file.

Here is my /etc/nginx/sites-available/default file (fyi, I have not fully re-setup TLS 1.3 yet so I commented out the settings)

SSL Labs SSL Certificate Check

All good thanks to the config above.

SSL Labs

Install WP-CLI

I don’t like setting up FTP to auto-update WordPress plugins. I use the WP-CLI tool to manage WordPress installations by the command line. Read my blog here on using WP-CLI.

Download WP-CLI

Move WP-CLI to the bin folder as “wp”

Test wp

Update WordPress Plugins

Now I can run “wp plugin update” to update all WordPress plugins

Update WordPress Core

WordPress core file can be updated with “wp core update“

Troubleshooting: Use the flag “–allow-root “if wp needs higher access (unsafe action though).

Install PHP Child Workers

I edited the following file to setup PHP child workers /etc/php/7.2/fpm/pool.d/www.conf

Changes

> pm = dynamic
> pm.max_children = 40
> pm.start_servers = 15
> pm.min_spare_servers = 5
> pm.max_spare_servers = 15
> pm.process_idle_timeout = 30s;
> pm.max_requests = 500;
> php_admin_value[error_log] = /var/log/www-fpm-php.www.log
> php_admin_value[memory_limit] = 512M

Restart PHP

Test NGINX config, reload NGINX config and restart NGINX

Output (14 workers are ready)

Memory Tweak (set at your own risk)

vm.swappiness = 1

Setting swappiness to a value of 1 all but disables the swap file and tells the Operating System to aggressively use ram, a value of 10 is safer. Only set this if you have enough memory available (and free).

Possible swappiness settings:

> vm.swappiness = 0 Swap is disabled. In earlier versions, this meant that the kernel would swap only to avoid an out of memory condition when free memory will be below vm.min_free_kbytes limit, but in later versions, this is achieved by setting to 1.[2]> vm.swappiness = 1 Kernel version 3.5 and over, as well as Red Hat kernel version 2.6.32-303 and over: Minimum amount of swapping without disabling it entirely.
> vm.swappiness = 10 This value is sometimes recommended to improve performance when sufficient memory exists in a system.[3]
> vm.swappiness = 60 The default value.
> vm.swappiness = 100 The kernel will swap aggressively.

The “htop” tool is a handy memory monitoring tool to “top”

Also, you can use good old “watch” command to show near-live memory usage (auto-refreshes every 2 seconds)

Script to auto-clear the memory/cache

As a habit, I am setting up a cronjob to check when free memory falls below 100MB, then the cache is automatically cleared (freeing memory).

Script Contents: clearcache.sh

I set the cronjob to run every 15 mins, I added this to my cronjob.

Sample log output

I will check the log (/scripts/clearcache.log) in a few days and view the memory trends.

After 1/2 a day Ubuntu 18.04 is handling memory just fine, no externally triggered cache clears have happened 🙂

Free memory over time

I used https://crontab.guru/every-hour to set the right schedule in crontab.

I rebooted the VM.

Update: I now use Nixstats monitoring

Swap File

FYI: Here is a handy guide on viewing swap file usage here. I’m not using swap files so it is only an aside.

After the system rebooted I checked if the swappiness setting was active.

Yes, swappiness is set.

File System Tweaks – Write Back Cache (set at your own risk)

First, check your disk name and file system

Take note of your disk name (e.g vda1)

I used TuneFS to enable writing data to the disk before writing to the journal. tunefs is a great tool for setting file system parameters.

Warning (snip from here): “I set the mode to journal_data_writeback. This basically means that data may be written to the disk before the journal. The data consistency guarantees are the same as the ext3 file system. The downside is that if your system crashes before the journal gets written then you may lose new data — the old data may magically reappear.“

Warning this can corrupt your data. More information here.

I ran this command.

I edited my fstab to append the “writeback,noatime,nodiratime” flags for my volume after a reboot.

Edit FS Tab:

I added “writeback,noatime,nodiratime” flags to my disk options.

Updating Ubuntu Packages

Show updatable packages.

Update Packages.

Unattended Security Updates

Read more on Ubuntu 18.04 Unattended upgrades here, here and here.

Install Unattended Upgrades

Enable Unattended Upgrades.

Now I configure what packages not to auto-update.

Edit /etc/apt/apt.conf.d/50unattended-upgrades

Find “Unattended-Upgrade::Package-Blacklist” and add packages that you don’t want automatically updated, you may want to manually update these (and monitor updates).

I prefer not to auto-update critical system apps (I will do this myself).

FYI: You can find installed packages by running this command:

Enable automatic updates by editing /etc/apt/apt.conf.d/20auto-upgrades

Edit the number at the end (the number is how many days to wait before updating) of each line.

> APT::Periodic::Update-Package-Lists “1”;
> APT::Periodic::Download-Upgradeable-Packages “1”;
> APT::Periodic::AutocleanInterval “7”;
> APT::Periodic::Unattended-Upgrade “1”;

Set to “0” to disable automatic updates.

The results of unattended-upgrades will be logged to /var/log/unattended-upgrades

Update packages now.

Almost done.

I Rebooted

GT Metrix Score

I almost fell off my chair. It’s an amazing feeling hitting refresh in GT Metrix and getting sub-2-second score consistently (and that is with 17 assets loading and 361KB of HTML content)

0.9sec load times

WebPageTest.org Test Score

Nice. I am not sure why the effective use of CDN has an X rating as I have the EWWW CDN and Cloudflare. First Byte time is now a respectable “B”, This was always bad.

Update: I found out the longer you set cache delays in Cloudflare the higher the score.

Web Page Test

GT Metrix has a nice historical breakdown of load times (night and day).

Upcloud Site Speed in GTMetrix

Google Page Speed Insight Desktop Score

I benchmarked with https://developers.google.com/speed/pagespeed/insights/

This will help with future SEO rankings. It is well known that Google is pushing fast servers.

100% Desktop page speed score

Google Chrome 70 Dev Console Audit (Desktop)

100% Chrome Audit Score

This is amazing, I never expected to get this high score.  I know Google like (and are pushing) sub-1-second scores.

My site is loading so well it is time I restored some old features that were too slow on other servers

  • I disabled Lazy loading of images (this was not working on some Android devices)
  • I re-added the News Widget and news images.

GTMetrix and WebpageTest sores are still good (even after adding bloat)

Benchmarks are still good

My WordPress site is not really that small either

Large website

FYI: WordPress Plugins I use.

These are the plugins I use.

  • Autoptimize – Optimises your website, concatenating the CSS and JavaScript code, and compressing it.
  • BJ Lazy Load (Now Disabled) – Lazy image loading makes your site load faster and saves bandwidth.
  • Cloudflare – Cloudflare speeds up and protects your WordPress site.
  • Contact Form 7 – Just another contact form plugin. Simple but flexible.
  • Contact Form 7 Honeypot – Add honeypot anti-spam functionality to the popular Contact Form 7 plugin.
  • Crayon Syntax Highlighter – Supports multiple languages, themes, highlighting from a URL, local file or post text.
  • Democracy Poll – Allows creating democratic polls. Visitors can vote for more than one answer & add their own answers.
  • Display Posts Shortcode – Display a listing of posts using the shortcode
  • EWWW Image Optimizer – Reduce file sizes for images within WordPress including NextGEN Gallery and GRAND FlAGallery. Uses jpegtran, optipng/pngout, and gifsicle.
  • GDPR Cookie Consent – A simple way to show that your website complies with the EU Cookie Law / GDPR.
  • GTmetrix for WordPress – GTmetrix can help you develop a faster, more efficient, and all-around improved website experience for your users. Your users will love you for it.
  • TinyMCE Advanced – Enables advanced features and plugins in TinyMCE, the visual editor in WordPress.
  • Wordfence Security – Anti-virus, Firewall and Malware Scan
  • WP Meta SEO – WP Meta SEO is a plugin for WordPress to fill meta for content, images and main SEO info in a single view.
  • WP Performance Score Booster – Speed-up page load times and improve website scores in services like PageSpeed, YSlow, Pingdom and GTmetrix.
  • WP SEO HTML Sitemap – A responsive HTML sitemap that uses all of the settings for your XML sitemap in the WordPress SEO by Yoast Plugin.
  • WP-Optimize – WP-Optimize is WordPress’s #1 most installed optimisation plugin. With it, you can clean up your database easily and safely, without manual queries.
  • WP News and Scrolling Widgets Pro – WP News Pro plugin with six different types of shortcode and seven different types of widgets. Display News posts with various designs.
  • Yoast SEO – The first true all-in-one SEO solution for WordPress, including on-page content analysis, XML sitemaps and much more.
  • YouTube – YouTube Embed and YouTube Gallery WordPress Plugin. Embed a responsive video, YouTube channel, playlist gallery, or live stream

How I use these plugins to speed up my site.

  • I use EWWW Image Optimizer plugin to auto-compress my images and to provide a CDN for media asset deliver (pre-Cloudflare). Learn more about ExactDN and EWWW.io here.
  • I use Autoptimize plugin to optimise HTML/CSS/JS and ensure select assets are on my EWWW CDN. This plugin also removes WordPress Emojis, removed the use of Google Fonts, allows you to define pre-configured domains, Async Javascript-files etc.
  • I use BJ Lazy Load to prevent all images in a post from loading on load (and only as the user scrolls down the page).
  • GTmetrix for WordPress and Cloudflare plugins are for information only?
  • I use WP-Optimize to ensure my database is healthy and to disable comments/trackbacks and pingbacks.

Let’s Test UpCloud’s Disk IO in Chicago

Looks good to me, Read IO is a little bit lower than UpCloud’s Singapore data centre but still, it’s faster than Vultr.  I can’t wait for more data centres to become available around the world.

Why is UpCloud Disk IO so good?

I asked UpCloud on Twitter why the Disk IO was so good.

  • “MaxIOPS is UpCloud’s proprietary block-storage technology. MaxIOPS is physically redundant storage technology where all customer’s data is located in two separate physical devices at all times. UpCloud uses InfiniBand (!) network to connect storage backends to compute nodes, where customers’ cloud servers are running. All disks are enterprise-grade SSD’s. And using separate storage backends, it allows us to live migrate our customers’ cloud servers freely inside our infrastructure between compute nodes – whether it be due to hardware malfunction (compute node) or backend software updates (example CPU vulnerability and immediate patching).“

My Answers to Questions to support

Q1) What’s the difference between backups and snapshots (a Twitter user said Snapshots were a thing)

A1) Backups and snapshots are the same things with our infrastructure.

Q2) What are charges for backup of a 50GB drive?

A2) We charge $0.06 / GB of the disk being captured. But capture the whole disk, not just what was used. So for a 50GB drive, we charge $0.06 * 50 = $3/month. Even if 1GB were only used.

  • Support confirmed that each backup is charged (so 5 times manual backups are charged 5 times). Setting up a daily auto backup schedule for 2 weeks would create 14 billable backup charges.
  • I guess a 25GB server will be $1.50 a month

Q3) What are data charges if I go over my 2TB quota?

A3) Outgoing data charges are $0.056/GB after the pre-configured allowance.

Q4) What happens if my balance hits $0?

A4) You will get notification of low account balance 2 weeks in advance based on your current daily spend. When your balance reaches zero, your servers will be shut down. But they will still be charged for. You can automatically top-up if you want to assign a payment type from your Control Panel. You deposit into your balance when you want. We use a prepaid model of payment, so you need to top up before using, not billing you after usage. We give you lots of chances to top-up.

Support Tips

  • One thing to note, when deleting servers (CPU, RAM) instances, you get the option to delete the storages separately via a pop-up window. Choose to delete permanently to delete the disk, to save credit. Any disk storage lying around even unattached to servers will be billed.
  • Charges are in USD.

I think it’s time to delete my domain from Vultr in Sydney.

Deleted my Vultr domain

I deleted my Vultr domain.

Delete Vultr Server

Done.

More Reading on UpCloud

https://www.upcloud.com/documentation/faq/

UpCloud Server Status

http://status.upcloud.com

Check out my new guide on Nixstats for awesome monitoring

What I would like

  1. Ability to name individual manual backups (tag with why I backed up).
  2. Ability to push user-defined data from my VM to the dashboard
  3. Cheaper scheduled backups
  4. Sydney data centres (one day)

Update: Post UpCloud Launch Tweaks (Awesome)

I had a look at https://www.webpagetest.org/ results to see where else I can optimise webpage delivery.

Optimisation Options

Disable dasjhicons.min.css (for unauthenticated WordPress users).

Find functions.php in the www root

Edit functions.php

Add the following

// Remove dashicons in frontend for unauthenticated users
add_action( 'wp_enqueue_scripts', 'bs_dequeue_dashicons' );
function bs_dequeue_dashicons() {
    if ( ! is_user_logged_in() ) {
        wp_deregister_style( 'dashicons' );
    }
}

HTTP2 Push

I added http2 to my listening servers

I tested a http2 push page by defining this in /etc/nginx/sites-available/default 

Once I tested that push (demo here) was working I then defined two files to push that were being sent from my server

I used the WordPress Plugin Autoptimize to remove Google font usage (this removed a number of files being loaded when my page loads).

I used the WordPress Plugin WP-Optimize plugin into to remove comments and disable pingbacks and trackbacks.

WordPress wp-config.php tweaks

Add 2FA Authentication to server logins.

I recently checked out YubiCo YubiKeys and I have secured my Linux servers with 2FA prompts at login. Read the guide here. I secured my WordPress too.

Tweaks Todo

  • Compress placeholder BJ Lazy Load Image (plugin is broken)
  • Solve 2x Google Analytics tracker redirects (done, switched to Matomo)

Conclusion

I love UpCloud’s fast servers, give them a go (use my link and get $25 free credit).

I love Cloudflare for providing a fast CDN.

I love ewww.io’s automatic Image Compression and Resizing plugin that automatically handles image optimisations and pre Cloudflare/first hit CDN caching.

Read my post about server monitoring with Nixstats here.

Let the results speak for themselves (sub <1 second load times).

Results

I hope this guide helps someone.

Please consider using my referral code and get $25 credit for free.

https://www.upcloud.com/register/?promo=D84793

2020 Update. I have stopped using Putty and WinSCP. I now use MobaXterm (a tabbed SSH client for Windows) as it is way faster than WinSCP and better than Putty. Read my review post of MobaXTerm here.

Ask a question or recommend an article

[contact-form-7 id=”30″ title=”Ask a Question”]

Revision History

v2.1 Newer GTMetrix scores

v2.0 New UpCloud UI Update and links to new guides.

v1.9 Spelling and grammar

v1.8 Trial mode gotcha (deposit money ASAP)

v1.7 Added RSA Private key info

v1.7 – Added new firewall rules info.

v1.6 – Added more bloat to the site, still good.

v1.5 Improving Accessibility

v1.4 Added Firewall Price

v1.3 Added wp-config and plugin usage descriptions.

v1.2 Added GTMetrix historical chart.

v1.1 Fixed free typos and added final conclusion images.

v1.0 Added final results

v0.9 added more tweaks (http2 push, removing unwanted files etc)

v0.81 Draft  – Added memory usage chart and added MaxIOPS info from UpCloud.

v0.8 Draft post.

I set the cronjob to run every 15 mins, I added this to my cronjob.

 

Sample log output

 

I will check the log (/scripts/clearcache.log) in a few days and view the memory trends.

After 1/2 a day Ubuntu 18.04 is handling memory just fine, no externally triggered cache clears have happened 🙂

Free memory over time

I used https://crontab.guru/every-hour to set the right schedule in crontab.

I rebooted the VM.

Update: I now use Nixstats monitoring

Swap File

FYI: Here is a handy guide on viewing swap file usage here. I’m not using swap files so it is only an aside.

After the system rebooted I checked if the swappiness setting was active.

 

Yes, swappiness is set.

File System Tweaks – Write Back Cache (set at your own risk)

First, check your disk name and file system

 

Take note of your disk name (e.g vda1)

I used TuneFS to enable writing data to the disk before writing to the journal. tunefs is a great tool for setting file system parameters.

Warning (snip from here): “I set the mode to journal_data_writeback. This basically means that data may be written to the disk before the journal. The data consistency guarantees are the same as the ext3 file system. The downside is that if your system crashes before the journal gets written then you may loose new data — the old data may magically reappear.“

Warning this can corrupt your data. More information here.

I ran this command.

 

I edited my fstab to append the “writeback,noatime,nodiratime” flags for my volume after a reboot.

Edit FS Tab:

 

I added “writeback,noatime,nodiratime” flags to my disk options.

 

Updating Ubuntu Packages

Show updatable packages.

 

Update Packages.

 

Unattended Security Updates

Read more on Ubuntu 18.04 Unattended upgrades here, here and here.

Install Unattended Upgrades

 

Enable Unattended Upgrades.

 

Now I configure what packages not to auto update.

Edit /etc/apt/apt.conf.d/50unattended-upgrades

Find “Unattended-Upgrade::Package-Blacklist” and add packages that you don’t want automatically updated, you may want to manually update these (and monitor updates).

I prefer not to auto-update critical system apps (I will do this myself).

 

FYI: You can find installed packages by running this command:

 

Enable automatic updates by editing /etc/apt/apt.conf.d/20auto-upgrades

Edit the number at the end (the number is how many days to wait before updating) of each line.

> APT::Periodic::Update-Package-Lists “1”;
> APT::Periodic::Download-Upgradeable-Packages “1”;
> APT::Periodic::AutocleanInterval “7”;
> APT::Periodic::Unattended-Upgrade “1”;

Set to “0” to disable automatic updates.

The results of unattended-upgrades will be logged to /var/log/unattended-upgrades

Update packages now.

 

Almost done.

I Rebooted

GT Metrix Score

I almost fell off my chair. It’s an amazing feeling hitting refresh in GT Metrix and getting sub-2-second score consistently (and that is with 17 assets loading and 361KB of HTML content)

0.9sec load times

WebPageTest.org Test Score

Nice. I am not sure why the effective use of CDN has an X rating as I have the EWWW CDN and Cloudflare. First Byte time is now a respectable “B”, This was always bad.

Update: I found out the longer you set cache delays in Cloudflare the higher the score.

Web Page Test

GT Metrix has a nice historical breakdown of load times (night and day).

Upcloud Site Speed in GTMetrix

Google Page Speed Insight Desktop Score

I benchmarked with https://developers.google.com/speed/pagespeed/insights/

This will help with future SEO rankings. It is well known that Google is pushing fast servers.

100% Desktop page speed score

Google Chrome 70 Dev Console Audit (Desktop)

100% Chrome Audit Score

This is amazing, I never expected to get this high score.  I know Google like (and are pushing) sub-1-second scores.

My site is loading so well it is time I restored some old features that were too slow on other servers

  • I disabled Lazy loading of images (this was not working on some Android devices)
  • I re-added the News Widget and news images.

GTMetrix and WebpageTest sores are still good (even after adding bloat)

Benchmarks are still good

My WordPress site is not really that small either

Large website

FYI: WordPress Plugins I use.

These are the plugins I use.

  • Autoptimize – Optimises your website, concatenating the CSS and JavaScript code, and compressing it.
  • BJ Lazy Load (Now Disabled) – Lazy image loading makes your site load faster and saves bandwidth.
  • Cloudflare – Cloudflare speeds up and protects your WordPress site.
  • Contact Form 7 – Just another contact form plugin. Simple but flexible.
  • Contact Form 7 Honeypot – Add honeypot anti-spam functionality to the popular Contact Form 7 plugin.
  • Crayon Syntax Highlighter – Supports multiple languages, themes, highlighting from a URL, local file or post text.
  • Democracy Poll – Allows to create democratic polls. Visitors can vote for more than one answer & add their own answers.
  • Display Posts Shortcode – Display a listing of posts using the shortcode
  • EWWW Image Optimizer – Reduce file sizes for images within WordPress including NextGEN Gallery and GRAND FlAGallery. Uses jpegtran, optipng/pngout, and gifsicle.
  • GDPR Cookie Consent – A simple way to show that your website complies with the EU Cookie Law / GDPR.
  • GTmetrix for WordPress – GTmetrix can help you develop a faster, more efficient, and all-around improved website experience for your users. Your users will love you for it.
  • TinyMCE Advanced – Enables advanced features and plugins in TinyMCE, the visual editor in WordPress.
  • Wordfence Security – Anti-virus, Firewall and Malware Scan
  • WP Meta SEO – WP Meta SEO is a plugin for WordPress to fill meta for content, images and main SEO info in a single view.
  • WP Performance Score Booster – Speed-up page load times and improve website scores in services like PageSpeed, YSlow, Pingdom and GTmetrix.
  • WP SEO HTML Sitemap – A responsive HTML sitemap that uses all of the settings for your XML sitemap in the WordPress SEO by Yoast Plugin.
  • WP-Optimize – WP-Optimize is WordPress’s #1 most installed optimisation plugin. With it, you can clean up your database easily and safely, without manual queries.
  • WP News and Scrolling Widgets Pro – WP News Pro plugin with six different types of shortcode and seven different types of widgets. Display News posts with various designs.
  • Yoast SEO – The first true all-in-one SEO solution for WordPress, including on-page content analysis, XML sitemaps and much more.
  • YouTube – YouTube Embed and YouTube Gallery WordPress Plugin. Embed a responsive video, YouTube channel, playlist gallery, or live stream

How I use these plugins to speed up my site.

  • I use EWWW Image Optimizer plugin to auto-compress my images and to provide a CDN for media asset deliver (pre-Cloudflare). Learn more about ExactDN and EWWW.io here.
  • I use Autoptimize plugin to optimise HTML/CSS/JS and ensure select assets are on my EWWW CDN. This plugin also removes WordPress Emojis, removed the use of Google Fonts, allows you to define pre-configured domains, Async Javascript-files etc.
  • I use BJ Lazy Load to prevent all images in a post from loading on load (and only as the user scrolls down the page).
  • GTmetrix for WordPress and Cloudflare plugins are for information only?
  • I use WP-Optimize to ensure my database is healthy and to disable comments/trackbacks and pingbacks.

Let’s Test UpCloud’s Disk IO in Chicago

Looks good to me, Read IO is a little bit lower than UpCloud’s Singapore data centre but still, it’s faster than Vultr.  I can’t wait for more data centres to become available around the world.

Why is UpCloud Disk IO so good?

I asked UpCloud on Twitter why the Disk IO was so good.

  • “MaxIOPS is UpCloud’s proprietary block-storage technology. MaxIOPS is physically redundant storage technology where all customer’s data is located in two separate physical devices at all times. UpCloud uses InfiniBand (!) network to connect storage backends to compute nodes, where customers’ cloud servers are running. All disks are enterprise-grade SSD’s. And using separate storage backends, it allows us to live migrate our customers’ cloud servers freely inside our infrastructure between compute nodes – whether it be due to hardware malfunction (compute node) or backend software updates (example CPU vulnerability and immediate patching).“

My Answers to Questions to support

Q1) What’s the difference between backups and snapshots (a Twitter user said Snapshots were a thing)

A1) Backups and snapshots are the same things with our infrastructure.

Q2) What are charges for backup of a 50GB drive?

A2) We charge $0.06 / GB of the disk being captured. But capture the whole disk, not just what was used. So for a 50GB drive, we charge $0.06 * 50 = $3/month. Even if 1GB were only used.

  • Support confirmed that each backup is charged (so 5 times manual backups are charged 5 times). Setting up a daily auto backup schedule for 2 weeks would create 14 billable backup charges.
  • I guess a 25GB server will be $1.50 a month

Q3) What are data charges if I go over my 2TB quota?

A3) Outgoing data charges are $0.056/GB after the pre-configured allowance.

Q4) What happens if my balance hits $0?

A4) You will get notification of low account balance 2 weeks in advance based on your current daily spend. When your balance reaches zero, your servers will be shut down. But they will still be charged for. You can automatically top-up if you want to assign a payment type from your Control Panel. You deposit into your balance when you want. We use a prepay model of payment, so you need to top up before using, not billing you after usage. We give you lots of chances to top-up.

Support Tips

  • One thing to note, when deleting servers (CPU, RAM) instances, you get the option to delete the storages separately via a pop-up window. Choose to delete permanently to delete the disk, to save credit. Any disk storage lying around even unattached to servers will be billed.
  • Charges are in USD.

I think it’s time to delete my domain from Vultr in Sydney.

Deleted my Vultr domain

I deleted my Vultr domain.

Delete Vultr Server

Done.

Check out my new guide on Nixstats for awesome monitoring

What I would like

  1. Ability to name individual manual backups (tag with why I backed up).
  2. Ability to push user defined data from my VM to the dashboard
  3. Cheaper scheduled backups
  4. Sydney data centres (one day)

Update: Post UpCloud Launch Tweaks (Awesome)

I had a look at https://www.webpagetest.org/ results to see where else I can optimise webpage delivery.

Optimisation Options

HTTP2 Push

I added http2 to my listening servers I tested a http2 push page by defining this in /etc/nginx/sites-available/default 

Once I tested that push (demo here) was working I then defined two files to push that were being sent from my server

2FA Authentication at login

I recently checked out YubiCo YubiKeys and I have secured my Linux servers with 2FA prompts at login. Read the guide here. I secured my WordPress aswel.

Performance

I used the WordPress Plugin Autoptimize to remove Google font usage (this removed a number of files being loaded when my page loads).

I used the WordPress Plugin WP-Optimize plugin into to remove comments and disable pingbacks and trackbacks.

Results

Conclusion

I love UpCloud’s fast servers, give them a go (use my link and get $25 free credit).

I love Cloudflare for providing a fast CDN.

I love ewww.io’s automatic Image Compression and Resizing plugin that automatically handles image optimisations and pre Cloudflare/first hit CDN caching.

Read my post about server monitoring with Nixstats here.

Let the results speak for themselves (sub <1 second load times).

More Reading on UpCloud

https://www.upcloud.com/documentation/faq/

UpCloud Server Status

http://status.upcloud.com

I hope this guide helps someone.

Free Credit

Please consider using my referral code and get $25 credit for free.

https://www.upcloud.com/register/?promo=D84793

2020 Update. I have stopped using Putty and WinSCP. I now use MobaXterm (a tabbed SSH client for Windows) as it is way faster than WinSCP and better than Putty. Read my review post of MobaXTerm here.

Ask a question or recommend an article

[contact-form-7 id=”30″ title=”Ask a Question”]

Revision History

v2.2 Converting to Blocks

v2.1 Newer GTMetrix scores

v2.0 New UpCloud UI Update and links to new guides.

v1.9 Spelling and grammar

v1.8 Trial mode gotcha (deposit money ASAP)

v1.7 Added RSA Private key info

v1.7 – Added new firewall rules info.

v1.6 – Added more bloat to the site, still good.

v1.5 Improving Accessibility

v1.4 Added Firewall Price

v1.3 Added wp-config and plugin usage descriptions.

v1.2 Added GTMetrix historical chart.

v1.1 Fixed free typos and added final conclusion images.

v1.0 Added final results

v0.9 added more tweaks (http2 push, removing unwanted files etc)

v0.81 Draft  – Added memory usage chart and added MaxIOPS info from UpCloud.

v0.8 Draft post.

Goodbye Dropbox, One Drive, iCloud and Hello Nextcloud private cloud on UpCloud

by

I recently came across NextCloud Hub server (free on self-hosted servers) and I wanted to set up my own private cloud server to store my own files.

I wan’t to be able to access my files on Windows, Mac, Android and iOS.

Most of all I want a place in the cloud (that I own) that I can upload my Acronis backup of C Drive as the Backblaze client (read my review of Backblaze here) is a bit slow at uploading a 150GB backup file to the USA.

To create my own Nextcloud server I will need to login to these services.

  • I logged into my Domain Name provider porkbun.com (to ensure I had a domain name)
  • I logged into Cloudflare.com (to manage my DNS for a subdomain (redirected from PorkBun)).
  • I logged into my UpCloud.com account. (to deploy a new virtual machine)

Fyi: If you don’t have a favourite virtual machine provider you can use my referral link to obtain $25 free credit (only if you are new to UpCloud). Every new user who signs up with my referral link will receive a $25 bonus to get started. That’s 5 months free server (1 CPU and 1GB memory Linux server) 

Post Index

  1. NextCloud System Requirements
  2. Creating a new Virtual Machine at UpCloud
  3. Updating Ubuntu
  4. Installing Common Software Packages
  5. Securing SSH with the Google Authentication PAM module
  6. Installing a Firewall
  7. Installing NGINX and DNS
  8. Installing PHP/PHP-FPM
  9. Installing MySQL
  10. Nixstats
  11. CronTab Updates
  12. Misc Security Stuff

1. NextCloud System Requirements

I checked the NextCloud version 18  system requirements and it needs the following to deploy.

  • Ubuntu 18.04 LTS (recommended)
  • MySQL 5.7+ or MariaDB 10.2+ (recommended)
  • Nginx with php-fpm
  • PHP 4 (recommended)

Minimum Memory Requirements 

Nextcloud needs a minimum of 128MB RAM, and they recommend a minimum of 512MB.

I can deploy a server with at least 512MB memory free. The minimum UpCloud server I can deploy comes with 1GB of memory for $5 a month.

Time to create a new server.

2. Creating a new Virtual Machine at UpCloud

I logged into UpCloud and  clicked “Deploy Server“

Deploy Server Button

I selected Singapore as the place to deploy my new server (as it was closest to me here in Australia). UpCloud does not have servers here in Australia yet.

I chose to deploy a server in Singapore

I checked https://wondernetwork.com/pings/ to ensure Singapore is the fastest location near.  My server https://fearby.com is located in Chicago as it’s closer to my average readers and search engines.

Ping Speeds

I would like my NextCloud server to be as fast as possible to me. Singapore is the faster UpCloud datacenter near me.

I selected a server with 1 CPU Core, 1GB of Memory, 25GB of storage and 1TB of network traffic. I will add a 500GB drive to this server for additional storage.

If the server needs more resources I will upgrade it later.

Server tier's $5 month to $640 a month

The only downside of a $5/m server is the 1TB network quota. If I overuse the network (downloads) I will get an extra charge. 

I reached out to the support to verify the costs if I go over my quota.

Long answered the question.

My question to UpCloud chat support.

Q1) With a $5/m server with 1TB quota what is the over charge costs if I go over 1TB
Q2) Is 1TB quota up and down or just down?

Prompt Answer

Hi Simon,

Good to speak to you again.

A1) Only Simple plans include monthly allowance of outgoing network traffic. After the allowance, the cost is $0.01/GB. It was a lot higher, but we reduced it to make it more competitive.

A2) The quota is for outgoing network traffic from your servers, all incoming and private traffic between your UpCloud servers is free of charge.
Regards,
~Long Lam

I hope this is helpful, let us know if you have any further questions.

Based on this information if I use all of my 1TB Monthly quota downloading files and I download and extra 150GB (e.g A 150GB Acronis backup image) it will cost $1.5 extra. That’s not bad.

UpCloud Chat Support

Before I selected a server type (Simple or Flexible) or storage type  (MAX IOPS or HDD) I jumped onto the UpCloud chat and asked a few questions.

Q1) Hello, When deploying a server is there a cost difference between MAX IOPS and HDD storage? I am looking at a 500GB drive

A1) Storage (MaxIOPS), per GB $0.00031/ hourly $0.22/ monthly, Storage (HDD), per GB $0.000078/hourly  $0.06 / monthly 

Q2) What’s the difference between Simple and Flexible?

A2) Flexible will/turn out more expensive depending on your use case, generally, it is more suited for short term deployments.

> With our flexible plans, you decide yourself how much CPU, memory and block storage your cloud server is allocated. This gives you incredible flexibility and allows you to fully customise your cloud server according to your specific needs.
 
>Do also note when flexible plans are shutdown we only charge you for allocated storages and IPv4. Whereas in simple plans, it will be charged fully even when shutdown.
 
> Our simple plans are billed by the hour, up to a limit of 672 hours per month. Should you decide to use your fewer hours, you will only be billed for the hours you actually used.
Question 1 to UpCloud chat

UpCloud has very responsive and helpful chat staff.  I never had this level of help with Vultr, Digital Ocean or AWS.

Question 2 to UpCloud

After I chatted with UpCloud support I decided to deploy a simple (Ubuntu 18.04) Server with 1 CPU Core, 1TB network traffic, 1GB of memory, 25GB system drive and an extra 500GB storage device.

When you create a server you can add an extra storage device. Nice.

Add a new device to the main storage device.

When adding an extra storage device you can choose faster MaxIOPS storage or slower HDD based storage. 

I will choose HDD storage as it will be cheaper for a 500GB device.

Second storage MaxIOPS or HDD storage

I created a 500GB storage device for a Nextcloud data drive.

You can create up to 2TB storage devices with UpCloud.

Name of the second storage device

I selected Ubuntu 18.04 LTS as the operating system.

I chose Ubuntu as the operating system

I configured a login method as “Only SSH Keys” as I have already added my SSH key with a passphrase.

Login method SSH Keys only

I selected my SSH key.

If you have not previously added an SSH Key to UpCloud then click Add new. Read more here.

I selected an Initialisation script I previously created (that just outputs a “Hello World” to a text file). One day I will create an Ansible or Terraform script to set up a server.

Select SSH Key and choose an init script

I clicked Deploy

Fyi: If you don’t have a favourite virtual machine provider you can use my referral link to obtain $25 free credit (only if you are new to UpCloud). Every new user who signs up with my referral link will receive a $25 bonus to get started. That’s 5 months free server (1 CPU and 1GB memory Linux server).

I entered my desired hostname 

Deploying a server at UpCloud

I had a notification that the UpCloud Deploy is being deployed..

Deploy Underway

I could see in my UpCloud dashboard that the server was being deployed.

List of all my servers at UpCloud

Server deploy is underway

Wow that took a whole minute to deploy a 525GB Server.

Deploy log said it took 1 minute to deploy

Wow UpCloud are fast

Configuring the server with Putty

Now it is time to connect to the Ubuntu Servers CLI and configure the server.  I grabbed the IP address that was listed at UpCloud.

I opened Putty  and added the IP address for the server.

New Putty connection

Under the Auth section in Putty I added the path to my SSH Private Key (the same one that configured in the new server)

Putty add ppk file

I saved the connection and clicked Open. I clicked Yes to the SSH fingerprint when I verified it was correct.

SSH Connect Verity

I now had root access to my new server.

Default login

Time to update Ubuntu.

3. Updating Ubuntu

I ran this command to update Ubuntu.

sudo apt-get update && sudo apt-get upgrade

Confirming the 2x storage disks

I ran this command to verify I had the 2 storage devices I selected at server deploy.

sudo lsblk |grep disk
vda    252:0    0   25G  0 disk
vdb    252:16   0  500G  0 disk

Yes, I have a 25GB disk and a 500GB disk

4. Installing Common Software Packages

I installed these packages

sudo apt-get install htop
sudo apt-get install lshw
sudo apt-get install ufw
sudo apt-get install ncdu
sudo apt-get install nmap
sudo apt-get install iozone3
sudo apt install pydf
sudo apt install mc
sudo apt install nnn

5. Securing SSH with the Google Authentication PAM module

Before I carry on any further I need to enable hardware 2FA login protections to all SSH logins. I will follow the guide I created here (Setup two factor authenticator protection at login on Ubuntu or Debian).

Warning: Take a backup of your server first. If you set this up wrong say bye-bye to your server. If I lose my YubiCo YubiKey and forget my backup codes I will have a hard time getting back in.

I will force all SSH logins to require my Hardware YubiCo YubiKey to be inserted (to generate a temporary One Time Password (OTP)).

You don’t need a YubiCo YubiKey, a generic software authentication app is OK but I prefer hardware devices as they are more secure.

YubiKey In USB Port Photo

I set the timezone to match Australia/Sydney. If I enabled a 2FA (OTP) at login with a different timezone than my connecting machine I would never be able to login to my server as my server and local PC need to be in the same timezone.

I ran this command to set the time in Ubuntu.

pkg-reconfigure tzdata

I then checked the time

sudo hwclock --show
2020-05-31 23:17:02.873751+1000

I installed the Google Authentication PAM Module (read more)

sudo apt install libpam-google-authenticator

I ran this command to configure the Google PAM Module

google-authenticator

I was presented with these questions

Do you want authentication tokens to be time-based (y/n) y

I was presented with a secret key, verification code and backup codes (I saved these somewhere safe)

Do you want me to update your “/root/.google_authenticator” file? (y/n) y

Do you want to disallow multiple uses of the same authentication
token? This restricts you to one login about every 30s, but it increases
your chances to notice or even prevent man-in-the-middle attacks (y/n) y

By default, a new token is generated every 30 seconds by the mobile app.
In order to compensate for possible time-skew between the client and the server, we allow an extra token before and after the current time. This allows for a time skew of up to 30 seconds between authentication server and client. If you experience problems with poor time synchronization, you can increase the window from its default size of 3 permitted codes (one previous code, the current code, the next code) to 17 permitted codes (the 8 previous codes, the current
code, and the 8 next codes). This will permit for a time skew of up to 4 minutes between client and server.

Do you want to do so? (y/n) y

If the computer that you are logging into isn’t hardened against brute-force
login attempts, you can enable rate-limiting for the authentication module.
By default, this limits attackers to no more than 3 login attempts every 30s.

Do you want to enable rate-limiting? (y/n) y

I can review all config values later with this command

sudo nano ~/.google_authenticator

Now I will enable 2FA at login by editing this file

sudo nano /etc/pam.d/sshd

I searched for “@include common-auth” then added this line after it.

auth required pam_google_authenticator.so

I then comment out the following line (this is the most important step, this forces 2FA)

#@include common-auth

Picture of my /etc/pam.d/sshd changes

pam chnages

I saved the file /etc/pam.d/sshd 

Now I can enable the PAM Module by editing this file

sudo nano /etc/ssh/sshd_config

I searched for

ChallengeResponseAuthentication

And change the value to “yes”

I ensured the following line exists

UsePAM yes

I added this line then saved /etc/ssh/sshd_config

AuthenticationMethods publickey,password publickey,keyboard-interactive

Now I edited /etc/pam.d/common-auth

sudo nano /etc/pam.d/common-auth

I added the following line before the line that says “auth [success=1 default=ignore] pam_unix.so nullok_secure”

auth required pam_google_authenticator.so

Now I can restart the SSH Service and test the 

/etc/init.d/ssh restart
[ ok ] Restarting ssh (via systemctl): ssh.service.

I restarted my putty session and reconnected to my server and I was prompted for the password for my private key and the randomly generated one-time password that was linked to my YubiCo YubiKey. Nice

Now I need to whitelist my SSH port to select IP’s.

6. Installing a Firewall

I installed the UFW firewall by typing this command

sudo apt-get install ufw

I configured UFW to rate limit SSH logins by typing this command

sudo ufw limit ssh comment 'Rate limit hit for openssh server'
Rules updated
Rules updated (v6)

I configured some common ports

sudo ufw allow ssh/tcp
sudo ufw logging on
sudo ufw allow http
sudo ufw allow https
sudo ufw allow 22
sudo ufw allow 53
sudo ufw allow 80
sudo ufw allow 443
sudo ufw allow 873

I added Cloudflare firewall rules (as my domain is behind their firewall and I will remove all direct IP access to my server later)

sudo ufw allow from 173.245.48.0/20
sudo ufw allow from 103.21.244.0/22
sudo ufw allow from 103.22.200.0/22
sudo ufw allow from 103.31.4.0/22
sudo ufw allow from 141.101.64.0/18
sudo ufw allow from 108.162.192.0/18
sudo ufw allow from 190.93.240.0/20
sudo ufw allow from 188.114.96.0/20
sudo ufw allow from 197.234.240.0/22
sudo ufw allow from 198.41.128.0/17
sudo ufw allow from 162.158.0.0/15
sudo ufw allow from 104.16.0.0/12
sudo ufw allow from 172.64.0.0/13
sudo ufw allow from 2400:cb00::/32
sudo ufw allow from 2405:8100::/32
sudo ufw allow from 2405:b500::/32
sudo ufw allow from 2606:4700::/32
sudo ufw allow from 2803:f800::/32
sudo ufw allow from 2c0f:f248::/32
sudo ufw allow from 2a06:98c0::/29

I added appropriate Whitelisted IP’s that can connect to Port 22 (SSH), removed blanket port 22 access and I configured my firewall to allow 91 incoming and outgoing rules (this is a secret)

I reloaded and enabled the firewall.

sudo ufw reload
sudo ufw disable
sudo ufw enable

7. Installing NGINX and DNS

I update Ubuntu again

sudo apt-get update && sudo apt-get upgrade

I installed Nginx

sudo apt-get install nginx

I edited my NGINX config and I change the default www folder location. 

I also configured the log file location, mime types, max body size, gzip, default ports, ssl cert paths, security headers, default page, server name, sensitive file block rules, dns server, cache headers etc.

Read more to here to configure Nginx etc.

Fyi: Nginx config file locations

sudo nano /etc/nginx/nginx.conf
sudo nano /etc/nginx/sites-available/default

I typed my servers IP address into a web browser

Nginx installed

I created an index.html file in the www folder and added “Hello World” to the file.

If I type my server’s IP address into a browser I can see this file.

My DNS is with Cloud flare so I logged in and added 2 DNS entries (IPv4 and IPv6) that direct traffic my new server IP(s) for this subdomain. To obtain the IP addresses I logged into UpCloud and clicked my server then clicked Network and noted my IPv4 and IPv6 addresses.

I then went to Cloudflare and added a DNS record for IPv4 and IPv6 pointing to my servers IP(s). I enabled Cloudflare Proxying to allow Cloud flare to try and hide the IP of the server.  I then configured my firewall to block access to the IP except via Cloudflare and my whitelist.

I then checked for worldwide DNS propagation with https://www.whatsmydns.net/. After 3 minutes my DNS changes were all around the world. Thanks, Cloudflare.

I tried loading my site but CLiudflare said it was down.

Site wont load.

I created a new HTTPS certificate at Cloud flare just to be sure and added it to my sites.

Generated new SSL cert

After investigating further I found this was because my primary website has a “Strict-Transport-Security header and I had enabled Full (Strict) SSL/TLS Encryption. I changed this to Full at Cloudflare.

Cloudflare HTTPS section

My site was now working.

SIte works

8. Installing PHP/PHP-FPM

To Install PHP 7.4 I ran this command to be able to get the latest version of PHP

sudo apt-get update
sudo apt -y install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

I installed PHP 7.4 with this command

sudo apt -y install php7.4

I checked that PHP is installed by running 

php -v
PHP 7.4.6 (cli) (built: May 14 2020 10:02:44) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.6, Copyright (c), by Zend Technologies

I setup some PHP Modules

sudo apt install php7.4-common php7.4-mysql php7.4-xml php7.4-xmlrpc php7.4-curl php7.4-gd php7.4-imagick php7.4-cli php7.4-dev php7.4-imap php7.4-mbstring php7.4-soap php7.4-zip php7.4-bcmath php7.4-tidy

I noticed apache2 installed (and broke my Nginx)  so I uninstalled it.

 sudo apt-get remove apache2

I also blocked apache from installing again

apt-mark hold apache2
apache2 set on hold.

I checked to make sure Apache was blocked from installing

apt-mark hold apache*

apache2 was already set on hold.
apache2-bin set on hold.
apache2-utils set on hold.
apache2-data set on hold.
apache2-doc set on hold.
apache2-suexec-pristine set on hold.
apache2-suexec-custom set on hold.
apache2-dbg set on hold.
apache2-dev set on hold.
apache2-ssl-dev set on hold.
apachedex set on hold.
apacheds set on hold.
apachetop set on hold.

Now I will install PHP-FPM.

FPM is a process manager to manage FastCGI in PHP

sudo apt-get install php7.4-fpm

I checked the status of the PHP FPM service with

sudo service php7.4-fpm status

Output

php7.4-fpm.service - The PHP 7.4 FastCGI Process Manager
   Loaded: loaded (/lib/systemd/system/php7.4-fpm.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2020-06-06 21:34:31 AEST; 1min 54s ago
     Docs: man:php-fpm7.4(8)
  Process: 7767 ExecStopPost=/usr/lib/php/php-fpm-socket-helper remove /run/php/php-fpm.sock /etc/php/7.4/fpm/pool.d/www.conf 74 (code=exited, status=0/SUCCESS)
  Process: 7772 ExecStartPost=/usr/lib/php/php-fpm-socket-helper install /run/php/php-fpm.sock /etc/php/7.4/fpm/pool.d/www.conf 74 (code=exited, status=0/SUCCESS)
 Main PID: 7769 (php-fpm7.4)
   Status: "Processes active: 0, idle: 2, Requests: 0, slow: 0, Traffic: 0req/sec"
    Tasks: 3 (limit: 1147)
   CGroup: /system.slice/php7.4-fpm.service
           |-7769 php-fpm: master process (/etc/php/7.4/fpm/php-fpm.conf)
           |-7770 php-fpm: pool www
           `-7771 php-fpm: pool www

I might add some PHP child workers if I add more CPU’s to this server later

I edited my php.ini

sudo nano /etc/php/7.4/fpm/php.ini

I made these changes to php.ini

file_uploads = On
allow_url_fopen = On
memory_limit = 512M
post_max_size = 50M
upload_max_filesize = 50M
cgi.fix_pathinfo = 0
max_execution_time = 360
date.timezone = Australia/Sydney

I added read this page (Nginx Configuration) and edited my /etc/nginx/sites-enabled/default

I tested and reloaded the Nginx config and restarted NGINX and PHP

nginx -t
nginx -s reload

sudo systemctl restart nginx.service
sudo systemctl restart php7.4-fpm

sudo systemctl status nginx.service
sudo systemctl status php7.4-fpm

To test PHP FPM I created a php file in my website root and added the following text

<?php phpinfo( ); ?>

I loaded this file in a browser and I confirmed that PHP-FPM was installed.

The test was ok (I deleted this test file), I deleted the index.html and created an index.php file

PHP-FPM test ok

9. Installing MySQL

To install MySQL I ran the following command

fyi: All usernames and database names are for example only.

sudo apt install mysql-server

I configured MySQL With this command

sudo mysql_secure_installation
Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

...
Would you like to setup VALIDATE PASSWORD plugin?
y


There are three levels of password validation policy:
STRONG

Please set the password for root here.
New password:
**************************************************

Re-enter new password:
**************************************************

Estimated strength of the password: 100

Do you wish to continue with the password provided?
y


Remove anonymous users?
y

Disallow root login remotely?
y

Remove test database and access to it?
y

Reload privilege tables now?
y

Now to test MySQL I will login to it

sudo mysql -u root -p
************************************************************

Now I ran the following to create a database for Nextcloud

mysql> CREATE DATABASE databasename CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
Query OK, 1 row affected (0.00 sec)

I verified the database was created

mysql> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| databasename       |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.00 sec)

I created a database user 

mysql> CREATE USER 'username'@'localhost' IDENTIFIED BY '************************************';
Query OK, 0 rows affected (0.00 sec)

I verified the use was created with this command

mysql> SELECT User,Host FROM mysql.user;
+------------------+-----------+
| User             | Host      |
+------------------+-----------+
| **************** | localhost |
| **************** | localhost |
| **************** | localhost |
| username         | localhost |
| **************** | localhost |
+------------------+-----------+
5 rows in set (0.00 sec)

I set permissions to add the user to the database

mysql> GRANT ALL PRIVILEGES ON `databasename`.* TO 'username'@'localhost';
Query OK, 0 rows affected (0.00 sec)

I verified the permissions with this command

mysql> SHOW GRANTS FOR 'username'@'localhost';
+--------------------------------------------------------------------------+
| Grants for username@localhost                                      |
+--------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'username'@'localhost'                       |
| GRANT ALL PRIVILEGES ON `databasename`.* TO 'username'@'localhost' |
+--------------------------------------------------------------------------+
2 rows in set (0.00 sec)

Finally I flushed permissions

mysql> FLUSH PRIVILEGES;

Now the databases is ready for Nextcloud

10. Nixstats

If you do not know what Nixstat’s is check out my post here Monitor server performance with NixStats and receive alerts by SMS, Push, Email, Telegram etc

I logged into Nixstats and click Add Server. I ran the provided install command.

wget -q -N --no-check-certificate https://nixstats.com/nixstatsagent.sh && bash nixstatsagent.sh ################## ##########################

Todo: Configure Nixstats PHP-FPM and NGINX Reporting (work in progress). My firewall rules are too tight for this install.

Handy Links

11. CronTab Updates

I created a update.sh file that I can call from a crontab entry to update Ubuntu and other software every xx hours.

I added this to my crontab.

12. Misc Security Stuff

I made sure my firewall only allowed traffic to my server was from Cloudflare IP’s and Whitelisted IP’s

Cloud flare IP’s can be found here.

https://www.cloudflare.com/ips-v4/
https://www.cloudflare.com/ips-v6/

At the time of writing the IP’s are 

173.245.48.0/20
103.21.244.0/22
103.22.200.0/22
103.31.4.0/22
141.101.64.0/18
108.162.192.0/18
190.93.240.0/20
188.114.96.0/20
197.234.240.0/22
198.41.128.0/17
162.158.0.0/15
104.16.0.0/12
172.64.0.0/13
131.0.72.0/22
2400:cb00::/32
2606:4700::/32
2803:f800::/32
2405:b500::/32
2405:8100::/32
2a06:98c0::/29
2c0f:f248::/32

I blocked access to my webserver (port 80 and 443) to anyone but Cloudflare.

I whitelisted DNS traffic to only Up Cloud. Thanks, Lon.

Up Cloud support is awesome.

UpCloud Support

Installing NextCloud

Finally I can Install Nextcloud, I navigated to https://nextcloud.com/install/ and clicked Download for Server

Download Nextcloud

I will use the Web installer to Install Nextcloud.

Web Installer Tab

Nextcloud web installer instructions

Setup Instructions

Snip about the Nextcloud Installer from the download page

The Web Installer is the easiest way to install Nextcloud on a web space. It checks the dependencies, downloads Nextcloud from the official server, unpacks it with the right permissions and the right user account. Finally, you will be redirected to the Nextcloud installer.

1) Right-click here and save the file to your computer
2) Upload setup-nextcloud.php to your web space
3) Point your web browser to setup-nextcloud.php on your webspace
4) Follow the instructions and configure Nextcloud
5) Login to your newly created Nextcloud instance!

You can find further instructions in the Nextcloud Admin Manual.

Note that the installer uses the same Nextcloud version as available for the built in updater in Nextcloud. After a major release it can take up to a month before it becomes available through the web installer and the updater. This is done to spread the deployment of new major releases out over time.

I used WinSCP to upload the setup-nextcloud.php to my Nginx web root  folder

WinSCP uploading

I loaded the setup-nextcloud.php file from, my web browser.

Loading setup-nextcloud.php

I entered “.” to install Nextcloud to the website root.

Install Next cloud to .

There is no way Nextcloud installed in 2 seconds, I checked the size of the disk usage in my website root.

sudo du -hs /web-root
313M

Nextcloud took about 10 seconds to download 313MB onto my UpCloud Server.

Fyi: I installed the SpeedTest CLI app and ran a benchmark and UpCloud Chicago can download as 937Mbps/sec and UpCloud Singapore can download at 717Mbps/sec. 

Nextcloud is installed.

Now I need to enter the data root folder for Nextcloud . I installed lswh to be able to see my 500GB disk.

sudo apt-get install lshw

I ran the following to see my disks

sudo lshw -class disk -short
H/W path        Device     Class      Description
=================================================
**********      /dev/vda   disk       26GB Virtual I/O device
**********      /dev/vdb   disk       536GB Virtual I/O device

I formatted my disk

sudo mkfs.ext4 /dev/vdb

I created a new folder under mount to connect to the partition. The folder name is a made-up sample

sudo mkdir -p /mnt/foldername

I mounted the partition to the folder

sudo mount /dev/vdb /mnt/foldername

I made sure Nginx can access the folder

sudo chown -R www-data:www-data /mnt/foldername

I changed to the partition mount

cd /mnt/foldername

I created a test 490GB file

fallocate -l 490G test.file

I checked the file

ls -al
-rw-r--r-- 1 username useername     526133493760 Jun  9 19:38 test.file

I deleted this test file and set this mount point as the data file in Nextcloud setup.

I added a new Nextcloud admin username and password,  mount folder for Nextcloud data folder, the SQL database user/password/database name and host and clicked Finish Setup

Nextcloud details

Nextcloud was setup.

Misc Setup

I ran the /settings/admin/overview report to see if I needed to perform andy final setup steps. I have a few missing php modules and a few optimisation tasks that need resolving.

Links to resolve.

Nextcloud External Security Scan

I loaded https://scan.nextcloud.com/ to perform a external security scan.

Security Scan

Scan Results

All good so far.

Adding Two-Factor Authentication (YubiKeys)

I noticed in the Nextcloud security setting page I can setup a YubiKey as a pass-wordless  login device.

Web AuthN device

This would allow me to insert my YubiKey to login automatically

Auto login.

I added my YubiKey and gave it a name.

Name a YubiKey

The password-less login method is a bit insecure as anyone that has my YubiKey can access my site.

I think I will set up a Two-Factor Authentication/OTP login method and link that to my YubiKey.  I visited the /settings/apps/security page and installed the Two-Factor TOTP Provider app.

Install the OTP App
Install; the OTL app

I clicked the checkbox next to TOTP

Enable TOPT

The app generated a QR code that my YubiCo Authentication App can use to link to Nectcloud

I verified the QR scan and entered the 6 number verification code from my YubiCo Authenticator app

Scan the QR Code

Two Factor logins are now enabled.

2FA Enabled/

Now after I log in I have to enter a temporary 6 digit number that is only valid for 30 seconds (and only after entering my YubiCo YubiKey into my PC and entering its password)

2FA enabled at login/

Nice

Nextcloud Overview

I logged into Nextcloud and was greeted with a wizard.

Welcome screen

The sample images in the welcome screen are a bit small.

welcome screen summary

I can add native apps to Windows, Mac, iOS and Android or I can log in via the web page.

App downalod options

Pointers to the manual, community help and forums.

Help options

Main screen is clean.

Main Screen

A user context Menu is linked in the top right.

Drop down menu.

I setup email alerts (I allowed outgoing ports in my firewall)

sudo ufw allow out 465/tcp
sudo ufw allow out 465/udb

I used my GSuite account to send emails.

email settings

Syncing Files from my PC to Nextcloud

I tried uploading my 150GB Acronis Backup image file to Nextcloud by the web interface but this will fail for sure, this will take many hours.

Acronis image uploading.

I decided to configure Acronis True Image to split backups into 100MB chunks.

100GB file sizes

I created another Acronis image of my Windows Drive.

Nextcloud Windows App

I visited https://nextcloud.com/install/ and installed the Nextcloud Windows app to sync files.

Download windows app

I clicked Windows

Windows Download

Click Next

Click Next

Click Next

Click Next

Click Install

Click Install

Nextcloud sync app is now installing

Installing Wizard

Next cloud sync is now installed.

Run Nextcloud

Click Log in

Login Screen

Enter your Nextcloud server https address and click Next

Enter https server

A web browser login screen appeared and I logged in 

Login to the web app.

After I logged in Nextcloud sync was connected

Sync Connected

I was prompted to sync everything online to my local PC or choose folders to Sync .

Sync File dialog.

All files that were in Nextcloud synced down (that I selected)

Nextcloud sync

I set Nextcloud to start at Windows start.

Start at startup.

I reviewed Download and Upload limits

I decided to add my U:\AcronisBackup folder to my Nextcloud server.

U:\AcronisBackup added rto sync

I was asked to add this to a remote Nextcloud folder.

add to destination folder dialog

Files were backing up.

I has 150GB of Acronis backup files backing up.

I could see each 100MB section of the Acronis Backup appearing in the Nextcloud web app.

Nextcloud Web site

I noticed that the raw file system list of files was about 30 seconds ahead of the web list.

ls -al list of the file system

I had an Alert from my Acronis Backup software that new backup files were downloading.

The Acronis backup folder started backing up but I noticed it was redownloading to a new folder.  I don’t want this.

I allowed Nextcloud to access backup files

I paused the Nextloud Sync and my 150GB Backup was re-downloading to a new folder.

pause backup

It looks like U:\AcronisBackup was backing up then downloading to U:\Nextcloud\Simon\AcronisBackup.

File dialog

I moved my Acronis backup from U:\AcronisBackup to U:\Nextcloud\Simon\ZENigma (ZENnigma is the name of my PC)

I moved my 150GB backup files into Nextcloud folder/

I deleted the old sync of U:\AcronisBackup and started the Nextcloud Sync again

Sync restarted

Now my Acronis backup (150GB) was backing up to Nextcloud.

Backup working

It took 24 hours to backup 150GB from my PC to my server in Singapore.

I can see a handy summary of synced files and disk space used/free.

Done

I can control the sync with a System Tray App.

Sys Tray APp

Nextcloud Conclusion

Pros

  • Free
  • Works well.
  • I have an offsite location for backups and an area for file sharing with my family
  • Faster than Backblaze and Dropbox

Cons

  • Needs better Hardware 2FA support
  • Some Nextcloud web pages are not mobile-friendly (e.g add new user)
  • Needs better post install security checks
  • Web view of files could be updated more often, there is as 30-second delay between the web list of files and a CLI list in Putty of /mnt/foldername/username/files/

Troubleshooting

NGINX website is not loading

Check to see if a package has downloaded apache (this will take out Nginx).

Also, make sure you have set permissions on the folder that holds your SSL Certificates and allow your Nginx www-data user read access.

sudo chown -R www-data:www-data /etc/nginx/https-cert/

Deleting a MySQL Database

I had an issue where Nextcloud did not like the database I created so I ran the following to revoke the database users permissions, remove the user and I deleted the database.

Command to revoke the users MySQL permissions

sudo mysql -u root -p
*************************************
mysql> REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'databaseusername'@'localhost';

Delete the MySQL user

sudo mysql -u root -p
Enter password: *************************************
mysql> DROP USER 'databaseusername'@'localhost';

I reset flushed permissions

sudo mysql -u root -p
Enter password: *************************************
mysql> 
FLUSH PRIVILEGES;

To delete the database run the following.

mysqladmin -u root -p drop databasename
Enter password: *************************************
Dropping the database is potentially a very bad thing to do.
Any data stored in the database will be destroyed.

Do you really want to drop the 'databasename' database [y/N] y
Database "databasename" dropped

Thanks for Reading

Fyi: If you don’t have a favourite virtual machine provider you can use my referral link to obtain $25 free credit (only if you are new to UpCloud). Every new user who signs up with my referral link will receive a $25 bonus to get started. That’s 5 months free server (1 CPU and 1GB memory Linux server) 

v1.1

Setup a Certification Authority Authorization (CAA) DNS record(s) to prevent https cert issue/misuse

by

On February 22nd 2017 CAA’s that issue https certificates are required to check what CAA’s are allowed to issue HTTP’s certificates for a website. To limit who can create HTTP’s certificates for your site all you need to do is specify a number of DNS records.

DNSSEC

Before adding DNS CAA records ensure you have enabled DNSSEC for extra security, this is not needed to setup CAA records but it’s a good idea.

DNSSEC Explained

Read my post here on setting up DNSSEC with Cloudflare here.

Namecheap allows you do set DNSSEC with 1 click (making the above guide not required unless you use Cloudflare).

One Click Enable DNS SEC

Testing DNSSEC

First, test DNSSEC on your website here: https://dnssec-analyzer.verisignlabs.com/ (I already have DNSSEC enabled)

I use Namecheap for buying domains and HTTP’s certs (you can buy a new domain here). Namecheap allow you to easily enable DNSSEC and CAA DNS records.

Read Namecheap’s CAA guide here.

Scott Helme tagged a great write up on CAA here.

Testing CAA (on your website)

Go to https://dev.ssllabs.com/ssltest/ and scan your website

https://dev.ssllabs.com screenshot showing a domain input box

You will see if CAA is enabled after the https test is complete (scroll past the rating)

https://dev.ssllabs.com scan showing A+

In my case CAA records were not detected.

Adding DNS CAA records at Namecheap

I logged into Namecheap, clicked Manage domain and clicked the Advanced DNS tab

Screenshot showing Namecheap Advanced DNS screen.
I click Add New Record (DNS), then I selected CAA
Screenshot of add NDS CAA record at Namecheap

Here are records for my main domain (allowing Comodo/Sectigo HTTP’s certificates only)

Type, Host, Value, TTL

CAA Record @ 0 issue "comodoca.com" Automatic
CAA Record @ 0 issue "comodo.com" Automatic
CAA Record @ 0 issue "usertrust.com" Automatic
CAA Record @ 0 issue "trust-provider.com" Automatic
CAA Record @ 0 issue "sectigo.com" Automatic

Here is my record allowing a sub domain (allowing Lets Encrypt HTTP’s certificates only)

Type, Host, Value, TTL

CAA Record audit.fearby.com 0 issue "letsencrypt.org" Automatic

It is also possible to setup email alerts of CAA violations where CAA’s support it. I setup a [email protected] email alias.

Type, Host, Value, TTL

CAA Record audit.fearby.com 0 iodef "mailto:[email protected]" Automatic
CAA Record@ 0 iodef "mailto:[email protected]" Automatic

Image of my final Namecheap DNS config.

Screenshot os Namecheap DNS entries (table below)

Test CAA Records

I visited https://dev.ssllabs.com/ssltest/ and performed a final scan.

CNS CAA Final scan now passes at dev.ssllabs.com

Pass 🙂

I do have real time remote server monitoring reporting on https presence and uptime, read the post here.

Nixstats graphs

Plug(s)

Warning

I had an issue where I failed to update my DNS (and define a CAA record) for the sub domain used for Nixstat reporting. I was receiving this error.

Connection not private warning.

dev.ssllabs.com was reporting the cert expired?

dev.ssllabs.com ssl report

The awesome chat support (Vincent) over at Nixstats found out it was because I did not have CAA record for the sub domain allowing “letsencrypt.org” to generate certs.

Created CAA record for status.feabry.com (CAA 0 issue "letsencrypt.org"

If you manually renew a Lets Encrypt cert with the following command without a CAA record you will see an error

> certbot -q renew

Error Output

Attempting to renew cert (subdomain.fearby.com) from /etc/letsencrypt/renewal/
subdomain.fearby.com.conf produced an unexpected error: Failed authorization procedure.
subdomain.fearby.com (http-01): urn:acme:error:caa :: CAA record for
subdomain.fearby.com prevents issuance. Skipping.
All renewal attempts failed.

DNS additions and changes take a while to propagate so monitor Whats My DNS for change status

https://www.whatsmydns.net/#CAA/status.fearby.com

Thanks for reading.

For simplicity I have removed all sub domain CAA settings for records and only set global ones

Revision History

v1.2 Troubleshooting

v1.1 Plugs

v1.0 initial Post

Monitor server performance with NixStats and receive alerts by SMS, Push, Email, Telegram etc

by

This is a draft post showing how you can monitor the performance of a server (or servers) with NixStats and receive alerts by SMS, Push, Email, Telegram etc

fyi: This is not a paid post, this is just me using the NixStats software to monitor my servers and send alerts.

Finding a good host

If you have not read my previous posts I have now moved my blog to the awesome UpCloud host (signup using this link to get $25 free UpCloud VM credit). I compared Digital Ocean, Vultr and UpCloud Disk IO here and UpCloud came out on top by a long way (read the blog post here). Here is my blog post on moving from Vultr to UpCloud.

Buy a domain name here

Domain names for just 88 cents!

Monitoring Servers

The post below will show you how you can monitor servers online with https://nixstats.com/ and send alerts when resources reach limits or servers fail.

https://nixstats.com/

I signed up and started a Nixstats (14 day free trial).

Start Nixstats Trial

After I created an account I was emailed by Nixtsats with agent install instructions for Linux (1 line). I was also advised to add contacts and to set up alerts.

I logged into the Nixstats settings and set up…

  • My Timezone
  • Default reporting period
  • First name and Surname
  • Reporting emails
  • etc

Nixstats Subscription Upgrade

Subscription options

  • Free (5 monitors, 1 server, 24-hour data retention etc)
  • Founder (25 monitors, 10 servers, 30-day data retention etc)
  • Business (100 monitors, 15 servers, 60-day data retention etc)

Subscription Options

I enabled the limited founder subscription so I can monitor 10x servers (this deal is too good to miss). I tried creating a status page myself last year and it is terribly hard.

Subscriptiosn page

I am now out of the free trial period 🙂 Let’s start monitoring many servers.

Subscription Activated

I enabled two factor Auth to Nixstats logins

Nixstats Two Factor Auth

I created a Nixstats API key for future use (watch this space)

Create API Key

I installed the Nixstats agent (the dashboard gave a 1 line command you can run as root to install the agent (on Linux)).

Instal Nixstats Agent

FYI: Command (######################## is a number linked to your account)

Output

nixstatsagent.sh 100%[====================================================>] 37.80K –.-KB/s in 0.1s

2018-10-02 09:53:56 (338 KB/s) – ‘nixstatsagent.sh’ saved [38708/38708]

Found Ubuntu …
Installing …
Installing Python2-PIP …
Installing nixstatsagent …
Generation a server id …
Got server_id: ######################
Creating and starting service
Created symlink /etc/systemd/system/multi-user.target.wants/nixstatsagent.service -> /etc/systemd/system/nixstatsagent.service.
Created the nixstatsagent service

Server Dashboard
below is a summary of all connected servers ( https://nixstats.com/dashboard/servers ).

Server Sumamry

Monitor Setup

I set up a number of monitors to monitor ping replies and https traffic

Monitors

Advanced Monitoring

I can also set the monitor credentials, timeouts, retries, auth methods, max redirects and frequency. If you server blocks login or resource GET attempts you may need to whitelist IP’s. IP’s of monitoring servers are located here https://nixstats.com/whitelist.php

Monitoring advanced options

Monitor Summary

The default dashboard is very informative. Feel free to create your own dashboards that focus on your own infrastructure or apps.

Monitor Summary

Individual Server Reports

You can click on a server and monitor it in detail.

Nixstats Graphs

Server Memory Graphs

Long-term memory graphs.

Memory Graph

Install Optional Nixstats Plugins

Nixstats offers many plugins to monitor software that is installed on your server (e.g NGINX, MySQL, PHP etc).

1) NGINX Monitoring (Plugin)

To enable NGINX monitoring I read https://help.nixstats.com/en/article/monitoring-nginx-50nu7f/

I edited my NGINX sites-enabled config.

I added the following

server {
    listen 127.0.0.1:8080;
    server_name localhost;
    location /status_page {
        stub_status on;
        allow 127.0.0.1;
        deny all;
    }
}

I tested, reloaded and restarted NGINX

The status page will only be available on the local machine, I tested the page on the local machine

It’s Working.

I edit /etc/nixstats.ini

I remove comments before these lines to enable the plugin

I ran the following command to see if NGINX monitoring is possible

Output

nginx:
{
    "accepts": 39,
    "accepts_per_second": 0.0,
    "active_connections": 6,
    "handled": 39,
    "handled_per_second": 0.0,
    "reading": 0,
    "requests": 119,
    "requests_per_second": 0.0,
    "waiting": 5,
    "writing": 1
}

It’s Working

I restarted the nixstatsagent

I can now view NGINX properties like active_connections in my dashboard. 🙂

2) Enable PHP-FPM Monitoring (Plugin)

Looks like a PHP-FPM monitoring was recently added lets set that up too. Read my guide on setting up PHP child workers here.

To enable PHP-FPM monitoring I read https://help.nixstats.com/en/article/monitoring-php-fpm-1tlyur6/

I edited my PHP-FPM ini file

I added the following line

Restart PHP

I added the following to /etc/nginx/sites-enabled/default localhost server block added above Note I use php 7.2 below (read more here).

server {
    listen 127.0.0.1:8080;
    server_name localhost;

location /status_phpfpm {
access_log off;
allow 127.0.0.1;
deny all;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_pass unix:/run/php/php7.2-fpm.sock;
log_not_found off;
}
}

I tested, reloaded and restarted NGINX

I restart PHP-FPM

Enabled the plugin in /etc/nixstats.ini

I tested the status page

Output:

{
	"pool":"www",
	"process manager":"static",
	"start time":1538654543,
	"start since":178,
	"accepted conn":28,
	"listen queue":0,
	"max listen queue":0,
	"listen queue len":0,
	"idle processes":49,
	"active processes":1,
	"total processes":50,
	"max active processes":2,
	"max children reached":0,
	"slow requests":0
}

I tested the agent

Output:

phpfpm:
{
    "accepted_conn": 51,
    "accepted_conn_per_second": 0.0,
    "active_processes": 1,
    "idle_processes": 49,
    "listen_queue": 0,
    "listen_queue_len": 0,
    "max_active_processes": 2,
    "max_children_reached": 0,
    "max_listen_queue": 0,
    "pool": "www",
    "process_manager": "static",
    "slow_requests": 0,
    "start_since": 318,
    "start_time": 1538654543,
    "total_processes": 50
}

I can now query PHP-FPM status values in Nixstats 🙂

Query PHP-FPM

Enable MySQL Monitoring (Plugin)

To enable MySQL monitoring I read https://help.nixstats.com/en/article/monitoring-mysql-1frskd8/

I edited the nixstats.ini

I enabled the mysql section in nixstats.ini and added my mysql credentials

[mysql]
enabled=yes
username=mysqluser
password=#######################
host=127.0.0.1
database=mysql
port=3306
socket=null

I ran this command to test MySQL querying

nixstatsagent --test mysql
mysql:
Load error: No module named MySQLdb

I had an error.

A quick Google revealed I had to install a mysql python module.

Allow localhost to connect to MySQL

Edit /etc/mysql.cnf and allow all localhost and external connections (I could not bind to localhost and an external IP at the same time)

bind-address    = 0.0.0.0

TIP: Ensure you have firewalled access to your MySQL server, never open it up without protection.

Let’s try again

nixstatsagent --test mysql

Output

Nice,

I restart MySQL

I restart my Nixstats service

service nixstatsagent restart

Now let’s monitor MySQL in Nixstats

I can now view MySQL metrix

MySQL MEtrix

Status Page

Nixstats allows you to create a status page ( https://nixstats.com/pages/overview ) where you can add any servers or monitors to that page. This stats page is truly awesome, it builds a live status page based on data coming from your installed agents.

You can even set up a custom subdomain that points to a Nixstats hosted status page too (e.g https://status.yourdomain.com).

FYI: An SSL certificate on your staus page may take a few hours to set up. Don’t panic if it is not instantatly available.

Custom Status Page

Nice.

This saves doing it yourself. The status page will look like it running on your server.

Status Page

You can create a status page that automatically aggregates collected data from monitors and displays them in a nice layout.

Status Page

This is great, I used to do my own status pages but not anymore.

Alerts

I added a contact so I could receive alerts. I could then add my mobile, email and PushOver key (to receive push notifications) and Telegram Bot API token.

Contact

Test Alerts

I sent a test alert to each service against the contact.

Test Alerts

I activated a Pushover licence on my Android device for about $7.49 AUD (one off) to ensure I keep getting Push Notifications.

Bought licence for PushOver

Nixstats have links that show you how you can create a Telegram Bot and Pushover.net account.

Pushover will cost about $5 USD one off per device (see faq).

I created the following alerts

Alert: Disk Usage higher than 90%

Alert Disk Usage higher than 90%

Alert: Load greater than 90 per cent for 1 minute

Alert load greater than 90 percent for 1 minute

Alert: Less than 5 percent memory free.

Alert less than 5 percent memory free

Summary of alerts.

Alert Sumamry

I also added a CPU reached 95% one for 5 mins alert too (but it’s not pictured above)

I forgot to specify alert recipients and methods for each alert so I edited each alert and added the contact.

Selected Alert Recipients and methods

Now it’s time to test the alerts.

I shut down a server to test alerts

Alerts to my defined Email, SMS, Push and Telegram are working a treat 🙂

Alerts Working

After I rebooted the server I also received alerts about the server being back up.

The status page showed the server that was offline too.

Server Offline

Nice

Troubleshooting

I had an issue instaling the agent on Debian

I ran the following command

nixstatsagent.sh: line 508: [: Installer exited with error code 0. See nixstatsagent.log for details.: integer expression expected

An error occurred, please check the install log file (nixstatsagent.log)!

Contents of nixstatsagent.log

I asked the Nixstats chat help and I was advised I had a dead repository (I removed this (editing the dead repo in the appropriate file in /etc/apt/) and all was ok)

I had trouble testing my Telegram alerts but it was my fault as I forgot to follow the bot account I created. Telegram does not allow message from a user (bot) unless you follow them.

A chat with the Nixstats staff sorted me out. Thanks, Nixstats chat team.

Nixstats chat

I had an issue with a missing python mysql package

I solved it by instaling python-mysqldb

Nixstats Help

Nixstats have a help subdomain: https://help.nixstats.com/en/

Nixstats Help

Error Logs Plugin

I did ask Nixstats on Twitter and they said they are working on a logging plugin, I can’t wait for that.

I now have access to beta log features and can see log tabs in Nixstats

I had or check the version of my rsyslogd

I edited: /etc/rsyslog.d/31-nixstats.conf

I pasted

##########################################################
### Rsyslog Template for Nixstats ###
##########################################################

$WorkDirectory /var/spool/rsyslog # where to place spool files
$ActionQueueFileName fwdRule1 # unique name prefix for spool files
$ActionQueueMaxDiskSpace 1g # 1gb space limit (use as much as possible)
$ActionQueueSaveOnShutdown on # save messages to disk on shutdown
$ActionQueueType LinkedList # run asynchronously
$ActionResumeRetryCount -1 # infinite retries if host is down

template(name=”NixFormat” type=”string”
string=”<%pri%>%protocol-version% %timestamp:::date-rfc3339% %HOSTNAME% %app-name% %procid% %msgid% [5bb8825c3f0bc16aa068f144@5fJR7vuYTJOX6cEiyZlLv5By tag=\”rsyslog\”] %msg%\n”
)

action(type=”omfwd” protocol=”tcp” target=”log.nixstats.com” port=”514″ template=”NixFormat”)
#################END CONFIG FILE#########################

I restarted the rsyslog service

Live Log Output

I can see a live log from (unknown) logs.

I can see the firewall blocking access to certain ports.

Live Log

Search logs

Search

Blacklist Checking (Beta)

Nixstats tweeted “We just launched a new blacklist check feature. Monitor your IP and hostname reputation. Free during the Beta!”

I enabled it.

I received a Blacklist notification

I requested removal at junkmailfilter.com

Thanks, Nixstats

Conclusion

This is one of the best software packages I have seen in a while. I have developed status

pages in the past (no more). Great work Nixstats.

Please check out Nixstats today, they are awesome. Signup for a free account and consider the limited time founder plan (it’s a bargain).

Nixstats Live chat support is awesome

Server Plug

If you need a server, consider using my referral code and get $25 UpCloud VM credit if you need to create a server online.

https://www.upcloud.com/register/?promo=D84793

Ask a question or recommend an article

[contact-form-7 id=”30″ title=”Ask a Question”]

Revision History

v1.3 Blacklist beta

V1.2 Logs beta

v1.1 Logging Tweet

v1.0 Initial Post

Setting up DNSSEC on a Namecheap domain hosted on UpCloud using CloudFlare

by

This is how I set up DNSSEC on a Namecheap domain hosted on UpCloud using CloudFlare to setup DNS security extensions

If you have not read my previous posts I have now moved my blog to the awesome UpCloud host (signup using this link to get $25 free UpCloud VM credit). I compared Digital Ocean, Vultr and UpCloud Disk IO here and UpCloud came out on top by a long way (read the blog post here). Here is my blog post on moving from Vultr to UpCloud.

About DNSSEC

Wikipedia has a great write-up on DNSSEC also read the ICANN page on DNSSEC.

Snip “DNSSEC is a set of extensions to DNS which provide to DNS clients (resolvers) origin authentication of DNS data, authenticated denial of existence, and data integrity, but not availability or confidentiality.”

https://daniellbenway.net has a great video explaining DNSSEC

Handy DNSSEC Links

Let’s view my DNSSEC status now

https://dnssec-analyzer.verisignlabs.com/ can help you check your sites DNSSEC status.

DNSSEC Analyzer - https://dnssec-analyzer.verisignlabs.com/

Prerequisites

This guide assumes you have already purchased a domain and set it up with say UpCloud hosting (read my setup guide here).

Buy a domain name from Namecheap here.

Domain names for just 88 cents!

Read my old guide here that I created while setting up Cloudflare on the Vultr host to see how to setup Cloudflare.

Setting up DNSSEC

First I logged into My Namecheap account, selected my domain, selected Advanced DNS and enabled DNSSEC.

Screenshot of Namecheap Advanced DNS page

I can see a number of values for DNSSEC KeyType/Algorithm/Digest Type and Digest. Below are the options in the dropdowns for Algorithm and Digest Type.

DNSSEC Algorithms

DNSSEC Algorithms (RSA, MD5 etc)

DNSSEC Digest Types

DNSSEC Digest Types (SHA etc)

I contacted NameCheap support and they said I needed to contact my UpCloud hosts to get relevant DNSSEC values.

My domain was purchased at NameCheap but by domain routers by Cloudflare DNS.

Namecheap DNS Nameservers pointing to cloudflare

By chance, I logged into my Cloudflare account and noticed they have a DNSSEC section under DNS. Nice.

Screenshot of Cloudflare menu, DNS highlighted.

I enabled DNSSEC

Enable Cloudflare DNSSEC records

Cloudflare offers all the relevant DNSSEC values.

Screenshot of Cloudflare DNSSEC generated Values

I entered these values into Namecheap under Advanced DNS on my domain.

Screenshot fo adding a DNS record at Namecheap

After 5 mins re-ran the DNSSEC Analyzr tool.

Screenshot of http://dnssec-debugger.verisignlabs.com/ Results

Hmmm, Cloudflare seems to think something is wrong 🙁

Screenshot of Cloudflare saying DNSSEC is not configured

I ran a DNS DS Lookup on my site. Everything appears ok.

Screenshot of https://mxtoolbox.com/SuperTool.aspx?action=mx

I re-added the record in Namecheap and waited for 15 mins and this time Cloudflare was happy. Maybe I just needed to wait for DNS replication a little longer?

Screenshot of cloudflare showing DNSSEC is all ok.

I tested my DNS serves with DNS Root Canary

DNS test with https://rootcanary.org/

I tested my site’s DNSSEC with https://zonemaster.iis.se/

Screenshot of https://zonemaster.iis.se/

Done

Skipping Cloudflare

I found that I can simply skip Cloudflare by enabling Premium DNS at Namecheap

Then enabling DNSSEC

Easy (totally independent of Cloudflare)

I hope this guide helps someone.

Please consider using my referral code and get $25 UpCloud VM credit for free.

https://www.upcloud.com/register/?promo=D84793

Ask a question or recommend an article

[contact-form-7 id=”30″ title=”Ask a Question”]

Revision History

V1.3 Namecheap DNSSEC

V1.2 ICANN DNSSEC link

V1.1 https://daniellbenway.net explainer video.

v1.0 Initial Post

Upgrading an Ubuntu server on UpCloud to add more CPU, Memory and Disk Space

by

Upgrading an Ubuntu server on UpCloud to add more CPU, Memory and Disk Space

If you have not read my previous posts I have now moved my blog from Vultr to the awesome UpCloud host (signup using this link to get $25 free credit).

Recently I compared Digital Ocean, Vultr and UpCloud Disk IO here and UpCloud came out on top by a long way (read the blog post here). Here is my blog post on moving from Vultr to UpCloud.

Spoiler: UpCloud performance is great.

Upcloud Site Speed in GTMetrix

Why Upgrade

I have 1 CPU, 1 GB memory and 50GB storage and it is running well?  I have PHP child workers set up and have set up the preferred use of memory over swap file usage.

View of htop querying processes on Ubuntu

Before UpCloud, when I had 512MB ram on Vultr I had multiple NGINX crashed a day so I used a bash script and scheduled a cron job to clear memory cache when memory fell below 100MB (view the script here).  To further increase the speed of the WordPress I have configured the OS to use memory over the disk.  About once a day free memory falls below 100MB (this is not a problem as my script clears cached items automatically).

Graph of memory falling below 100MB every day

I’d like to add more memory as I am working on some things (watch this space) and I will use the extra memory. I’d prefer the server is set up now for the expected workload.

How to Upgrade

This is how I upgraded from 1xCPU/2GB Memory/50GB Storage/2TB Transferred Data to a 2 CPU/4GB Mmeory/80GB Storage/4TB Transferred Data server.

UpCloud Pricing: https://www.upcloud.com/pricing/

Pricing table form https://www.upcloud.com/pricing/

Upgrade an UpCloud VM

I shut down my existing VM. Read this guide to setup a VM.

Login to the UpCloud dashboard, select your server (confirm the server has shut down) and click General Settings, choose the upgrade and click Update.

Upgrade the Server, shut it down the server and choose upgrade

I confirmed the upgrade options (2x CPU, 4096 MB Memory).

Confirm Upgrade Options

Click Update

Upgrade Applied

After 10 seconds you can start your server from the UpCloud server.

I confirmed the CPU upgrade was visible in the VM

Software Tweaks Post Upgrade.

I added these settings to the top of /etc/nginx/nginx.conf to ensure the extra CPU was used.

I increased PHP FPM ( /etc/php/7.2/fpm/php.ini ) to increase memory usage and child workers. I doubled child workers and max memory limit.

I restarted NGINX and PHP

I tweaked WordPress max memory limits

MySQL Tweaks: I logged into MySQL

I ran “SHOW GLOBAL STATUS” to view stats

mysql> SHOW GLOBAL STATUS;
+-----------------------------------------------+--------------------------------------------------+
| Variable_name                                 | Value                                            |
+-----------------------------------------------+--------------------------------------------------+
| Aborted_clients                               | 0                                                |
| Aborted_connects                              | 0                                                |
| Binlog_cache_disk_use                         | 0                                                |
| Binlog_cache_use                              | 0                                                |
| Binlog_stmt_cache_disk_use                    | 0                                                |
| Binlog_stmt_cache_use                         | 0                                                |
| Bytes_received                                | 3179986                                          |
| Bytes_sent                                    | 223872114                                        |
| Com_admin_commands                            | 0                                                |
| Com_assign_to_keycache                        | 0                                                |
| Com_alter_db                                  | 0                                                |
| Com_alter_db_upgrade                          | 0                                                |
| Com_alter_event                               | 0                                                |
| Com_alter_function                            | 0                                                |
| Com_alter_instance                            | 0                                                |
| Com_alter_procedure                           | 0                                                |
| Com_alter_server                              | 0                                                |
| Com_alter_table                               | 0                                                |
| Com_alter_tablespace                          | 0                                                |
| Com_alter_user                                | 0                                                |
| Com_analyze                                   | 0                                                |
| Com_begin                                     | 0                                                |
| Com_binlog                                    | 0                                                |
| Com_call_procedure                            | 0                                                |
| Com_change_db                                 | 284                                              |
| Com_change_master                             | 0                                                |
| Com_change_repl_filter                        | 0                                                |
| Com_check                                     | 0                                                |
| Com_checksum                                  | 0                                                |
| Com_commit                                    | 0                                                |
| Com_create_db                                 | 0                                                |
| Com_create_event                              | 0                                                |
| Com_create_function                           | 0                                                |
| Com_create_index                              | 0                                                |
| Com_create_procedure                          | 0                                                |
| Com_create_server                             | 0                                                |
| Com_create_table                              | 0                                                |
| Com_create_trigger                            | 0                                                |
| Com_create_udf                                | 0                                                |
| Com_create_user                               | 0                                                |
| Com_create_view                               | 0                                                |
| Com_dealloc_sql                               | 0                                                |
| Com_delete                                    | 18                                               |
| Com_delete_multi                              | 0                                                |
| Com_do                                        | 0                                                |
| Com_drop_db                                   | 0                                                |
| Com_drop_event                                | 0                                                |
| Com_drop_function                             | 0                                                |
| Com_drop_index                                | 0                                                |
| Com_drop_procedure                            | 0                                                |
| Com_drop_server                               | 0                                                |
| Com_drop_table                                | 0                                                |
| Com_drop_trigger                              | 0                                                |
| Com_drop_user                                 | 0                                                |
| Com_drop_view                                 | 0                                                |
| Com_empty_query                               | 0                                                |
| Com_execute_sql                               | 0                                                |
| Com_explain_other                             | 0                                                |
| Com_flush                                     | 0                                                |
| Com_get_diagnostics                           | 0                                                |
| Com_grant                                     | 0                                                |
| Com_ha_close                                  | 0                                                |
| Com_ha_open                                   | 0                                                |
| Com_ha_read                                   | 0                                                |
| Com_help                                      | 0                                                |
| Com_insert                                    | 342                                              |
| Com_insert_select                             | 0                                                |
| Com_install_plugin                            | 0                                                |
| Com_kill                                      | 0                                                |
| Com_load                                      | 0                                                |
| Com_lock_tables                               | 0                                                |
| Com_optimize                                  | 0                                                |
| Com_preload_keys                              | 0                                                |
| Com_prepare_sql                               | 0                                                |
| Com_purge                                     | 0                                                |
| Com_purge_before_date                         | 0                                                |
| Com_release_savepoint                         | 0                                                |
| Com_rename_table                              | 0                                                |
| Com_rename_user                               | 0                                                |
| Com_repair                                    | 0                                                |
| Com_replace                                   | 0                                                |
| Com_replace_select                            | 0                                                |
| Com_reset                                     | 0                                                |
| Com_resignal                                  | 0                                                |
| Com_revoke                                    | 0                                                |
| Com_revoke_all                                | 0                                                |
| Com_rollback                                  | 0                                                |
| Com_rollback_to_savepoint                     | 0                                                |
| Com_savepoint                                 | 0                                                |
| Com_select                                    | 16358                                            |
| Com_set_option                                | 849                                              |
| Com_signal                                    | 0                                                |
| Com_show_binlog_events                        | 0                                                |
| Com_show_binlogs                              | 0                                                |
| Com_show_charsets                             | 0                                                |
| Com_show_collations                           | 0                                                |
| Com_show_create_db                            | 0                                                |
| Com_show_create_event                         | 0                                                |
| Com_show_create_func                          | 0                                                |
| Com_show_create_proc                          | 0                                                |
| Com_show_create_table                         | 0                                                |
| Com_show_create_trigger                       | 0                                                |
| Com_show_databases                            | 3                                                |
| Com_show_engine_logs                          | 0                                                |
| Com_show_engine_mutex                         | 0                                                |
| Com_show_engine_status                        | 0                                                |
| Com_show_events                               | 0                                                |
| Com_show_errors                               | 0                                                |
| Com_show_fields                               | 921                                              |
| Com_show_function_code                        | 0                                                |
| Com_show_function_status                      | 0                                                |
| Com_show_grants                               | 0                                                |
| Com_show_keys                                 | 1                                                |
| Com_show_master_status                        | 0                                                |
| Com_show_open_tables                          | 0                                                |
| Com_show_plugins                              | 0                                                |
| Com_show_privileges                           | 0                                                |
| Com_show_procedure_code                       | 0                                                |
| Com_show_procedure_status                     | 0                                                |
| Com_show_processlist                          | 0                                                |
| Com_show_profile                              | 0                                                |
| Com_show_profiles                             | 0                                                |
| Com_show_relaylog_events                      | 0                                                |
| Com_show_slave_hosts                          | 0                                                |
| Com_show_slave_status                         | 0                                                |
| Com_show_status                               | 6                                                |
| Com_show_storage_engines                      | 0                                                |
| Com_show_table_status                         | 0                                                |
| Com_show_tables                               | 2                                                |
| Com_show_triggers                             | 0                                                |
| Com_show_variables                            | 6                                                |
| Com_show_warnings                             | 1                                                |
| Com_show_create_user                          | 0                                                |
| Com_shutdown                                  | 0                                                |
| Com_slave_start                               | 0                                                |
| Com_slave_stop                                | 0                                                |
| Com_group_replication_start                   | 0                                                |
| Com_group_replication_stop                    | 0                                                |
| Com_stmt_execute                              | 4                                                |
| Com_stmt_close                                | 4                                                |
| Com_stmt_fetch                                | 0                                                |
| Com_stmt_prepare                              | 4                                                |
| Com_stmt_reset                                | 0                                                |
| Com_stmt_send_long_data                       | 4                                                |
| Com_truncate                                  | 2                                                |
| Com_uninstall_plugin                          | 0                                                |
| Com_unlock_tables                             | 0                                                |
| Com_update                                    | 70                                               |
| Com_update_multi                              | 0                                                |
| Com_xa_commit                                 | 0                                                |
| Com_xa_end                                    | 0                                                |
| Com_xa_prepare                                | 0                                                |
| Com_xa_recover                                | 0                                                |
| Com_xa_rollback                               | 0                                                |
| Com_xa_start                                  | 0                                                |
| Com_stmt_reprepare                            | 0                                                |
| Connection_errors_accept                      | 0                                                |
| Connection_errors_internal                    | 0                                                |
| Connection_errors_max_connections             | 0                                                |
| Connection_errors_peer_address                | 0                                                |
| Connection_errors_select                      | 0                                                |
| Connection_errors_tcpwrap                     | 0                                                |
| Connections                                   | 292                                              |
| Created_tmp_disk_tables                       | 1124                                             |
| Created_tmp_files                             | 30                                               |
| Created_tmp_tables                            | 1369                                             |
| Delayed_errors                                | 0                                                |
| Delayed_insert_threads                        | 0                                                |
| Delayed_writes                                | 0                                                |
| Flush_commands                                | 1                                                |
| Handler_commit                                | 6094                                             |
| Handler_delete                                | 33                                               |
| Handler_discover                              | 0                                                |
| Handler_external_lock                         | 38571                                            |
| Handler_mrr_init                              | 0                                                |
| Handler_prepare                               | 0                                                |
| Handler_read_first                            | 2299                                             |
| Handler_read_key                              | 134761                                           |
| Handler_read_last                             | 237                                              |
| Handler_read_next                             | 310119                                           |
| Handler_read_prev                             | 2733                                             |
| Handler_read_rnd                              | 222350                                           |
| Handler_read_rnd_next                         | 472820                                           |
| Handler_rollback                              | 0                                                |
| Handler_savepoint                             | 0                                                |
| Handler_savepoint_rollback                    | 0                                                |
| Handler_update                                | 15605                                            |
| Handler_write                                 | 17310                                            |
| Innodb_buffer_pool_dump_status                | Dumping of buffer pool not started               |
| Innodb_buffer_pool_load_status                | Buffer pool(s) load completed at 180624 23:38:01 |
| Innodb_buffer_pool_resize_status              |                                                  |
| Innodb_buffer_pool_pages_data                 | 1035                                             |
| Innodb_buffer_pool_bytes_data                 | 16957440                                         |
| Innodb_buffer_pool_pages_dirty                | 0                                                |
| Innodb_buffer_pool_bytes_dirty                | 0                                                |
| Innodb_buffer_pool_pages_flushed              | 1936                                             |
| Innodb_buffer_pool_pages_free                 | 7144                                             |
| Innodb_buffer_pool_pages_misc                 | 13                                               |
| Innodb_buffer_pool_pages_total                | 8192                                             |
| Innodb_buffer_pool_read_ahead_rnd             | 0                                                |
| Innodb_buffer_pool_read_ahead                 | 0                                                |
| Innodb_buffer_pool_read_ahead_evicted         | 0                                                |
| Innodb_buffer_pool_read_requests              | 306665                                           |
| Innodb_buffer_pool_reads                      | 950                                              |
| Innodb_buffer_pool_wait_free                  | 0                                                |
| Innodb_buffer_pool_write_requests             | 26509                                            |
| Innodb_data_fsyncs                            | 1229                                             |
| Innodb_data_pending_fsyncs                    | 0                                                |
| Innodb_data_pending_reads                     | 0                                                |
| Innodb_data_pending_writes                    | 0                                                |
| Innodb_data_read                              | 16273920                                         |
| Innodb_data_reads                             | 1078                                             |
| Innodb_data_writes                            | 2857                                             |
| Innodb_data_written                           | 53379584                                         |
| Innodb_dblwr_pages_written                    | 1275                                             |
| Innodb_dblwr_writes                           | 109                                              |
| Innodb_log_waits                              | 0                                                |
| Innodb_log_write_requests                     | 450                                              |
| Innodb_log_writes                             | 585                                              |
| Innodb_os_log_fsyncs                          | 793                                              |
| Innodb_os_log_pending_fsyncs                  | 0                                                |
| Innodb_os_log_pending_writes                  | 0                                                |
| Innodb_os_log_written                         | 664064                                           |
| Innodb_page_size                              | 16384                                            |
| Innodb_pages_created                          | 56                                               |
| Innodb_pages_read                             | 988                                              |
| Innodb_pages_written                          | 1936                                             |
| Innodb_row_lock_current_waits                 | 0                                                |
| Innodb_row_lock_time                          | 0                                                |
| Innodb_row_lock_time_avg                      | 0                                                |
| Innodb_row_lock_time_max                      | 0                                                |
| Innodb_row_lock_waits                         | 0                                                |
| Innodb_rows_deleted                           | 2                                                |
| Innodb_rows_inserted                          | 19219                                            |
| Innodb_rows_read                              | 249102                                           |
| Innodb_rows_updated                           | 77                                               |
| Innodb_num_open_files                         | 81                                               |
| Innodb_truncated_status_writes                | 0                                                |
| Innodb_available_undo_logs                    | 128                                              |
| Key_blocks_not_flushed                        | 0                                                |
| Key_blocks_unused                             | 12751                                            |
| Key_blocks_used                               | 645                                              |
| Key_read_requests                             | 321877                                           |
| Key_reads                                     | 648                                              |
| Key_write_requests                            | 196                                              |
| Key_writes                                    | 150                                              |
| Locked_connects                               | 0                                                |
| Max_execution_time_exceeded                   | 0                                                |
| Max_execution_time_set                        | 0                                                |
| Max_execution_time_set_failed                 | 0                                                |
| Max_used_connections                          | 3                                                |
| Max_used_connections_time                     | 2018-06-24 23:43:48                              |
| Not_flushed_delayed_rows                      | 0                                                |
| Ongoing_anonymous_transaction_count           | 0                                                |
| Open_files                                    | 229                                              |
| Open_streams                                  | 0                                                |
| Open_table_definitions                        | 206                                              |
| Open_tables                                   | 786                                              |
| Opened_files                                  | 502                                              |
| Opened_table_definitions                      | 208                                              |
| Opened_tables                                 | 817                                              |
| Performance_schema_accounts_lost              | 0                                                |
| Performance_schema_cond_classes_lost          | 0                                                |
| Performance_schema_cond_instances_lost        | 0                                                |
| Performance_schema_digest_lost                | 0                                                |
| Performance_schema_file_classes_lost          | 0                                                |
| Performance_schema_file_handles_lost          | 0                                                |
| Performance_schema_file_instances_lost        | 0                                                |
| Performance_schema_hosts_lost                 | 0                                                |
| Performance_schema_index_stat_lost            | 0                                                |
| Performance_schema_locker_lost                | 0                                                |
| Performance_schema_memory_classes_lost        | 0                                                |
| Performance_schema_metadata_lock_lost         | 0                                                |
| Performance_schema_mutex_classes_lost         | 0                                                |
| Performance_schema_mutex_instances_lost       | 0                                                |
| Performance_schema_nested_statement_lost      | 0                                                |
| Performance_schema_prepared_statements_lost   | 0                                                |
| Performance_schema_program_lost               | 0                                                |
| Performance_schema_rwlock_classes_lost        | 0                                                |
| Performance_schema_rwlock_instances_lost      | 0                                                |
| Performance_schema_session_connect_attrs_lost | 0                                                |
| Performance_schema_socket_classes_lost        | 0                                                |
| Performance_schema_socket_instances_lost      | 0                                                |
| Performance_schema_stage_classes_lost         | 0                                                |
| Performance_schema_statement_classes_lost     | 0                                                |
| Performance_schema_table_handles_lost         | 0                                                |
| Performance_schema_table_instances_lost       | 0                                                |
| Performance_schema_table_lock_stat_lost       | 0                                                |
| Performance_schema_thread_classes_lost        | 0                                                |
| Performance_schema_thread_instances_lost      | 0                                                |
| Performance_schema_users_lost                 | 0                                                |
| Prepared_stmt_count                           | 0                                                |
| Qcache_free_blocks                            | 1                                                |
| Qcache_free_memory                            | 16760152                                         |
| Qcache_hits                                   | 0                                                |
| Qcache_inserts                                | 0                                                |
| Qcache_lowmem_prunes                          | 0                                                |
| Qcache_not_cached                             | 16355                                            |
| Qcache_queries_in_cache                       | 0                                                |
| Qcache_total_blocks                           | 1                                                |
| Queries                                       | 19164                                            |
| Questions                                     | 19155                                            |
| Select_full_join                              | 0                                                |
| Select_full_range_join                        | 0                                                |
| Select_range                                  | 2677                                             |
| Select_range_check                            | 0                                                |
| Select_scan                                   | 2098                                             |
| Slave_open_temp_tables                        | 0                                                |
| Slow_launch_threads                           | 0                                                |
| Slow_queries                                  | 0                                                |
| Sort_merge_passes                             | 12                                               |
| Sort_range                                    | 4859                                             |
| Sort_rows                                     | 244452                                           |
| Sort_scan                                     | 854                                              |
| Ssl_accept_renegotiates                       | 0                                                |
| Ssl_accepts                                   | 0                                                |
| Ssl_callback_cache_hits                       | 0                                                |
| Ssl_cipher                                    |                                                  |
| Ssl_cipher_list                               |                                                  |
| Ssl_client_connects                           | 0                                                |
| Ssl_connect_renegotiates                      | 0                                                |
| Ssl_ctx_verify_depth                          | 0                                                |
| Ssl_ctx_verify_mode                           | 0                                                |
| Ssl_default_timeout                           | 0                                                |
| Ssl_finished_accepts                          | 0                                                |
| Ssl_finished_connects                         | 0                                                |
| Ssl_server_not_after                          |                                                  |
| Ssl_server_not_before                         |                                                  |
| Ssl_session_cache_hits                        | 0                                                |
| Ssl_session_cache_misses                      | 0                                                |
| Ssl_session_cache_mode                        | NONE                                             |
| Ssl_session_cache_overflows                   | 0                                                |
| Ssl_session_cache_size                        | 0                                                |
| Ssl_session_cache_timeouts                    | 0                                                |
| Ssl_sessions_reused                           | 0                                                |
| Ssl_used_session_cache_entries                | 0                                                |
| Ssl_verify_depth                              | 0                                                |
| Ssl_verify_mode                               | 0                                                |
| Ssl_version                                   |                                                  |
| Table_locks_immediate                         | 11962                                            |
| Table_locks_waited                            | 0                                                |
| Table_open_cache_hits                         | 19395                                            |
| Table_open_cache_misses                       | 817                                              |
| Table_open_cache_overflows                    | 12                                               |
| Tc_log_max_pages_used                         | 0                                                |
| Tc_log_page_size                              | 0                                                |
| Tc_log_page_waits                             | 0                                                |
| Threads_cached                                | 2                                                |
| Threads_connected                             | 1                                                |
| Threads_created                               | 3                                                |
| Threads_running                               | 1                                                |
| Uptime                                        | 2944                                             |
| Uptime_since_flush_status                     | 2944                                             |
+-----------------------------------------------+--------------------------------------------------+
353 rows in set (0.00 sec)

Read more on SHOW GLOBAL STATUS here. Read more on the values here.

I can see NO major errors here (possibly due to UpClouds awesome disk IO) so I won’t be making memory tweaks in MySQL. Sign Up using this link and get $25 credit free on UpCloud and see for yourself how fast they are.

Configure Ubuntu System Memory Usage

Edit /etc/sysctl.conf

Add the following to allow things to sit in ram longer

Snip from: https://www.kernel.org/doc/Documentation/sysctl/vm.txt

This percentage value controls the tendency of the kernel to reclaim the memory which is used for caching of directory and inode objects.

At the default value of vfs_cache_pressure=100 the kernel will attempt to reclaim dentries and inodes at a "fair" rate with respect to pagecache and swapcache reclaim.  Decreasing vfs_cache_pressure causes the kernel to prefer to retain dentry and inode caches. When vfs_cache_pressure=0, the kernel will never reclaim dentries and inodes due to memory pressure and this can easily lead to out-of-memory conditions. Increasing vfs_cache_pressure beyond 100 causes the kernel to prefer to reclaim dentries and inodes.

Increasing vfs_cache_pressure significantly beyond 100 may have negative performance impact. Reclaim code needs to take various locks to find freeable directory and inode objects. With vfs_cache_pressure=1000, it will look for ten times more freeable objects than there are."

Read these pages here and here regarding setting MySQL memory.

Reboot

Resize the disk

The 2x CPU, 4GB memory plan comes with 80GB storage allowance.  My disk at present is 50GB and I will update the size soon following this guide soon.

Upgrade disk from 50gb to 80GB soon

Quick Benchmark

I used loader.io to load 500 users to access my site in 1 minute.

HTOP showing 2x busy CPU's running at 60%

The benchmark worked with no errors.

Loader.io Success with 500 concurrent users

This benchmark was performed with no Cloudflare caching. I should get Cloudflare caching working again to lower the average response time. I loaded my website manually in Google Chrome while loader.io threw 500 users at my site and it loaded very fast.

Conclusion

After a few days, I checked my memory logs and there were no low memory triggers (just normal internal memory management triggers). Ubuntu was happier.

No Low memory low triggers

This graph was taken before I set “vm.vfs_cache_pressure” so I will update this graph in a few days.

I hope this guide helps someone.

Please consider using my referral code and get $25 credit for free.

https://www.upcloud.com/register/?promo=D84793

Ask a question or recommend an article

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Revision History

1.0 Initial Post

Measuring VM performance (CPU, Disk, Latency, Concurrent Users etc) on Ubuntu and comparing Vultr, Digital Ocean and UpCloud – Part 4 of 4

by

How can you measure VM performance (CPU, Disk, Latency, Concurrent Users etc) on Ubuntu and comparing Vultr, Digital Ocean and UpCloud – Part 4 of 4

Read Part 1, Part 2, Part 3 or Part 4

I ran the MySQL benchmark preparation command again (no problem this time).

sysbench --test=oltp --oltp-table-size=1000000 --db-driver=mysql --mysql-db=test --mysql-user=root --mysql-password=###################### prepare
sysbench 0.4.12:  multi-threaded system evaluation benchmark

Creating table 'sbtest'...
Creating 1000000 records in table 'sbtest'...

Test table and records created

Test Records Created

Now I can benchmark MySQL on my main server.

sysbench --test=oltp --oltp-table-size=1000000 --db-driver=mysql --mysql-db=test --mysql-user=root --mysql-password=################################# --max-time=60 --oltp-read-only=on --max-requests=0 --num-threads=8 run

RAW Output

sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 8

Doing OLTP test.
Running mixed OLTP test
Doing read-only test
Using Special distribution (12 iterations,  1 pct of values are returned in 75 pct cases)
Using "BEGIN" for starting transactions
Using auto_inc on the id column
Threads started!
Time limit exceeded, exiting...
(last message repeated 7 times)
Done.

OLTP test statistics:
    queries performed:
        read:                            336210
        write:                           0
        other:                           48030
        total:                           384240
    transactions:                        24015  (400.09 per sec.)
    deadlocks:                           0      (0.00 per sec.)
    read/write requests:                 336210 (5601.24 per sec.)
    other operations:                    48030  (800.18 per sec.)

Test execution summary:
    total time:                          60.0242s
    total number of events:              24015
    total time taken by event execution: 480.0242
    per-request statistics:
         min:                                  1.79ms
         avg:                                 19.99ms
         max:                                141.00ms
         approx.  95 percentile:              37.49ms

Threads fairness:
    events (avg/stddev):           3001.8750/27.36
    execution time (avg/stddev):   60.0030/0.01

Results

queries performed (in 60 seconds):

  • read: 336210
  • other: 48030
  • total: 384240

I decided to add an index to see if I can speed this query up (read the MySQL index page here). I added an index (in Adminer) on the columns “Id” and “pad” for the sbtest table in the test database

I restarted the MySQL process

mysql restart
[ ok ] Restarting mysql (via systemctl): mysql.service.

I ran the same benchmark again.

Raw Output

sysbench --test=oltp --oltp-table-size=1000000 --db-driver=mysql --mysql-db=test --mysql-user=root --mysql-password=########################## --max-time=60 --oltp-read-only=on --max-requests=0 --num-threads=8 run
sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 8

Doing OLTP test.
Running mixed OLTP test
Doing read-only test
Using Special distribution (12 iterations,  1 pct of values are returned in 75 pct cases)
Using "BEGIN" for starting transactions
Using auto_inc on the id column
Threads started!
Time limit exceeded, exiting...
(last message repeated 7 times)
Done.

OLTP test statistics:
    queries performed:
        read:                            426538
        write:                           0
        other:                           60934
        total:                           487472
    transactions:                        30467  (507.69 per sec.)
    deadlocks:                           0      (0.00 per sec.)
    read/write requests:                 426538 (7107.67 per sec.)
    other operations:                    60934  (1015.38 per sec.)

Test execution summary:
    total time:                          60.0110s
    total number of events:              30467
    total time taken by event execution: 479.9124
    per-request statistics:
         min:                                  5.75ms
         avg:                                 15.75ms
         max:                                138.57ms
         approx.  95 percentile:              25.10ms

Threads fairness:
    events (avg/stddev):           3808.3750/8.70
    execution time (avg/stddev):   59.9891/0.00

Results

The quick index added 20% extra throughput on queries 🙂

Mysql before and after an index

Don’t forget to delete your test database

DROP DATABASE `test`;

Viewing MySQL Index Usage (on the “test” database)

Query to show Index stats for a table ‘test’

SELECT
 OBJECT_SCHEMA as 'Database', OBJECT_NAME as 'Table', 
 INDEX_NAME as 'Index', 
 COUNT_STAR, 
 SUM_TIMER_WAIT,  MIN_TIMER_WAIT, AVG_TIMER_WAIT, MAX_TIMER_WAIT, 
 COUNT_READ, 
 SUM_TIMER_READ, MIN_TIMER_READ, AVG_TIMER_READ, MAX_TIMER_READ,  
 COUNT_FETCH, SUM_TIMER_FETCH, MIN_TIMER_FETCH, AVG_TIMER_FETCH, MAX_TIMER_FETCH
FROM 
 performance_schema.table_io_waits_summary_by_index_usage
WHERE 
 object_schema = 'test'

I can see the MySQL PRIMARY index is getting used 🙂

Index Summary

Read more in viewable query stats (columns) here.

Other System Information Tools

Show processor information

cat /proc/cpuinfo

Output

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 61
model name      : Virtual CPU a7769a6388d5
stepping        : 2
microcode       : 0x1
cpu MHz         : 2394.454
cache size      : 16384 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm invpcid_single kaiser fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt arat
bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass
bogomips        : 4788.90
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

Memory Information

You can assign 512MB, 1GB, 2GB or more memory to a server on Vultr, Read my guide here on upgrading resources for Vultr VM’s here.

Only upgrade your server’s memory when server processes demand it, there is no need to pay for extra idle memory. Read my older guides on upgrading Digital Ocean and AWS servers.

I use the htop utility to monitor memory and processes. The memory usage will depend on how you have configured your server to use connection pools in code, MySQL or services.  Also what memory demands do you get in pean bandwidth times?

HTOP

You can check your server memory details on Ubuntu with this command

cat /proc/meminfo

Output

MemTotal:        2048104 kB
MemFree:           96176 kB
MemAvailable:     693072 kB
Buffers:          183476 kB
Cached:           526124 kB
SwapCached:            0 kB
Active:          1467220 kB
Inactive:         243228 kB
Active(anon):    1070464 kB
Inactive(anon):    27004 kB
Active(file):     396756 kB
Inactive(file):   216224 kB
Unevictable:        3652 kB
Mlocked:            3652 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                64 kB
Writeback:             0 kB
AnonPages:       1004504 kB
Mapped:           114664 kB
Shmem:             94192 kB
Slab:             192692 kB
SReclaimable:     171892 kB
SUnreclaim:        20800 kB
KernelStack:        3072 kB
PageTables:        20528 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     1024052 kB
Committed_AS:    2424332 kB
VmallocTotal:   34359738367 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
HardwareCorrupted:     0 kB
AnonHugePages:    247808 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       67440 kB
DirectMap2M:     2029568 kB

Use Memory or Disk (Swap)

You can configure the use of Memory over Disk by configuring your/etc/sysctl.conf file (setting value “vm.swappiness”)

You can check your swap file settings by running the following command

cat /proc/sys/vm/swappiness
1

Or By running

sysctl vm.swappiness
vm.swappiness = 1

Set a new swap file value by editing /etc/sysctl.conf

sudo nano /etc/sysctl.conf

Set the following to use more ram over the swap disk.

vm.swappiness = 1

Read about swappiness values here: https://en.wikipedia.org/wiki/Swappiness

Service Performance

Performance (and allocated resources) depends on the demands of your operating system and installed software

What operating system do you have?

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.4 LTS
Release:        16.04
Codename:       xenial

View NGINX Status, how much memory does it use?

/etc/init.d/nginx status
● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2018-05-25 21:28:25 AEST; 1 weeks 3 days ago
     Docs: man:nginx(8)
 Main PID: #### (nginx)
    Tasks: 3
   Memory: 58.9M
      CPU: 33min 11.515s
   CGroup: /system.slice/nginx.service
           ├─#### nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
           ├─#### nginx: worker process
           └─#### nginx: cache manager process

PHP (and Child Worker) status how much memory does it use and how many child workers do you have? Read my add PHP child workers post here (and update to PHP 7.2 here)

sudo service php7.2-fpm status
● php7.2-fpm.service - The PHP 7.2 FastCGI Process Manager
   Loaded: loaded (/lib/systemd/system/php7.2-fpm.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2018-05-25 21:28:26 AEST; 1 weeks 3 days ago
     Docs: man:php-fpm7.2(8)
 Main PID: #### (php-fpm7.2)
   Status: "Processes active: 0, idle: 20, Requests: 75911, slow: 0, Traffic: 0.1req/sec"
    Tasks: 21
   Memory: 694.2M
      CPU: 20h 49min 45.132s
   CGroup: /system.slice/php7.2-fpm.service
           ├─ #### php-fpm: master process (/etc/php/7.2/fpm/php-fpm.conf)
           ├─ #### php-fpm: pool www-acc
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-acc
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           ├─ #### php-fpm: pool www-usr
           └─ #### php-fpm: pool www-usr

MySQL Status

sudo service mysql status
● mysql.service - MySQL Community Server
   Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2018-05-25 21:28:27 AEST; 1 weeks 3 days ago
 Main PID: ##### (mysqld)
    Tasks: 35
   Memory: 405.9M
      CPU: 2h 17min 31.822s
   CGroup: /system.slice/mysql.service
           └─#### /usr/sbin/mysqld

Shared VM Hosts

One of the biggest impacts (after server latency) for your server is not the disk performance but the number of hosts/websites on the server who are also using the disk and server resources.

Reverse IP Lookup

I have 80 other web servers on my server (based on a reverse lookup).

I may move to a dedicated box when I can afford it.

Security

Above all else ensure that security is number 1 priority and make performance second priority.

Scan your site with Zap, Qualys and Kali Linux. Performance means nothing if you are hacked.

website-report

Simulated concurrent users

You can use Siege to test the maximum concurrent users accessing your site before the server starts to drop connections.

FYI: If you use Cloudflare (you should) this may not work as it will block connections.

Install Siege

sudo apt-get install siege

Test  your server with 10 concurrent serves for 1 minute

siege -t1m c10 'https://yourserver.com/'

Results

siege -t1m c10 'https://yourserver.com/'
** SIEGE 3.0.8
** Preparing 15 concurrent users for battle.
The server is now under siege...
Lifting the server siege...      done.

Transactions:                    417 hits
Availability:                 100.00 %
Elapsed time:                  59.01 secs
Data transferred:               8.24 MB
Response time:                  1.62 secs
Transaction rate:               7.07 trans/sec
Throughput:                     0.14 MB/sec
Concurrency:                   11.46
Successful transactions:         417
Failed transactions:               0
Longest transaction:            2.26
Shortest transaction:           1.49

Keep upping the connections (from 10 above) to a limit where connections start dropping.

I tried 25 then 50 concurrent users hitting a server on Digital Ocean and it did not fail.

Conclusion

  • Choose a server near your customers
  • Change hosts if one is faster and cheaper
  • Measure or benchmark your server (and compare over time).
  • Use Cloudflare

Create your own server today

  • Create your own server on Vultr here.
  • Create your own server on Digital Ocean here.
  • Create your own server on UpCloud here.

And remember you can install the Runcloud server management dashboard here.

I hope this guide helps someone.

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Measuring VM performance (CPU, Disk, Latency, Concurrent Users etc) on Ubuntu and comparing Vultr, Digital Ocean and UpCloud – Part 2 of 4

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How can you measure VM performance (CPU, Disk, Latency, Concurrent Users etc) on Ubuntu and comparing Vultr, Digital Ocean and UpCloud – Part 2 of 4

Read Part 1, Part 2, Part 3 or Part 4

Measure Disk Performance with Bonnie++

Installing Bonnie++ on Ubuntu

apt-get install bonnie++

Read this. post on using Bonnie++

Benchmark disk IO with DD and Bonnie++

Starting Bonnie++

bonnie++ -d /tmp -r 2048 -u username

Bonnie++ Readme.

Disk io with bonnie++ on Vultr/Sydney

Writing a byte at a time...done
Writing intelligently...done
Rewriting...done
Reading a byte at a time...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.97 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
servername 4G 656 99 308954 68 113706 33 1200 92 188671 30 10237 251
Latency 26067us 119ms 179ms 29139us 26069us 16118us
Version 1.97 ------Sequential Create------ --------Random Create--------
servername -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency 1463us 703us 880us 263us 119us 593us
1.97,1.97,servername,1,1528177870,4G,,656,99,308954,68,113706,33,1200,92,188671,30,10237,251,16,,,,,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,26067us,119ms,179ms,29139us,26069us,16118us,1463us,703us,880us,263us,119us,593us

Disk io with bonnie++ on Digital Ocean/London

Writing a byte at a time...done
Writing intelligently...done
Rewriting...done
Reading a byte at a time...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.97 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
servername 4G 699 99 778636 74 610414 60 1556 99 1405337 59 +++++ +++
Latency 17678us 10099us 17014us 7027us 3067us 2366us
Version 1.97 ------Sequential Create------ --------Random Create--------
servername -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency 1243us 376us 611us 108us 59us 181us
1.97,1.97,servername,1,1528186398,4G,,699,99,778636,74,610414,60,1556,99,1405337,59,+++++,+++,16,,,,,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,17678us,10099us,17014us,7027us,3067us,2366us,1243us,376us,611us,108us,59us,181us

Disk io with bonnie++ on UpCloud/Singapore

Writing a byte at a time...done
Writing intelligently...done
Rewriting...done
Reading a byte at a time...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.97 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
servername 4G 1014 99 407179 24 366622 32 2137 99 451886 17 +++++ +++
Latency 11297us 54232us 16443us 4949us 44883us 1595us
Version 1.97 ------Sequential Create------ --------Random Create--------
servername -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency 264us 340us 561us 138us 66us 327us
1.97,1.97,servername,1,1528226703,4G,,1014,99,407179,24,366622,32,2137,99,451886,17,+++++,+++,16,,,,,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,11297us,54232us,16443us,4949us,44883us,1595us,264us,340us,561us,138us,66us,327us

Now read this site on how to make sense of this data

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Securing Google G Suite email by setting up SPF, DKIM and DMARC with Cloudflare

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This post will show you how you can setup Sender Policy Framework (SPF), DomainKeys Identified Mail (DKIM) Signatures and Domain-based Message Authentication, Reporting, and Conformance (DMARC) on your GMail (G Suite) email to limit spam and increase security.

I have a number of guides on moving away form CPanel, Setting up VM’s on AWS, Vultr or Digital Ocean along with installing and managing WordPress from the command line. I use Google G Suite to send and receive emails that are linked to my domain (even via the command line) using multiple domains (with aliases).

For the best performing VM host (UpCloud) read my guide on the awesome UpCloud VM hosts (get $25 free credit by signing up here).

Buy a domain name from Namecheap here.

Domain names for just 88 cents!

Buy how can you extend your email security and limit spam?

Enter..

Sender Policy Framework (SPF) for Authorizing Use of Domains in Email

Background: SPF summary from the RFC document from the Internet Engineering Task Force (IETF).

“Email on the Internet can be forged in a number of ways. In particular, existing protocols place no restriction on what a sending host can use as the “MAIL FROM” of a message or the domain given on the SMTP HELO/EHLO commands. This document describes version 1 of the Sender Policy Framework (SPF) protocol, whereby ADministrative Management Domains (ADMDs) can explicitly authorize the hosts that are allowed to use their domain names, and a receiving host can check such authorization.”

Google has a guide in setting up SPF records for your G Suite account.

Scan your site for SPF, DKIM and DMARC configuration(s).

Gmail has a test site where you can check your site SPF, DKIM and DMARC etc: https://toolbox.googleapps.com/apps/checkmx/

Secure GSuite

How to set up an SPF Record

I followed this guide to set up an SPF record on my G Suite account. I use Cloudflare for my DNS provider so I’ll make my DNS changes there.

Add SPF Record

Update: Google instructions were wrong, use a TXT record and not a SPF record.

Read more on SPF at Wikipedia here.

DNS will take a while to replicate so do wait a few hours before checking again with the checkmx tool.

Now let’s set up DomainKeys Identified Mail (DKIM) Signatures

Read more on DKIM at Wikipedia here.

Background: The DKIM RFC form the Internet Engineering Task Force (IETF) states…

“DomainKeys Identified Mail (DKIM) permits a person, role, or organization that owns the signing domain to claim some responsibility for a message by associating the domain with the message. This can be an author’s organization, an operational relay, or one of their agents. DKIM separates the question of the identity of the Signer of the message from the purported author of the message. Assertion of responsibility is validated through a cryptographic signature and by querying the Signer’s domain directly to retrieve the appropriate public key. Message transit from author to recipient is through relays that typically make no substantive change to the message content and thus preserve the DKIM signature.”

Google has a DKIM FAQ: https://support.google.com/a/answer/174124

Login to your G Suite account and load this FAQ.

The FAQ page states..

“You can help prevent spoofing by adding a digital signature to outgoing message headers using the DKIM standard. This involves using a private domain key to encrypt your domain’s outgoing mail headers, and adding a public version of the key to the domain’s DNS records. Recipient servers can then retrieve the public key to decrypt incoming headers and verify that the message really comes from your domain and hasn’t been changed along the way.”

Click Generate the Domain Key

Generate Domain Key

Follow the steps and generate a key

Generate Key

Generate a new record

Generate key

Add the DKIM key to your DNS record

Add DNS record

DNS will take a while to replicate so do wait a few hours before checking again with the checkmx tool.

Domain-based Message Authentication, Reporting, and Conformance (DMARC)

Read more on DMARC at Wikipedia here. Read the official page here https://dmarc.org/.

Background: The DMARC RFC form the Internet Engineering Task Force (IETF) states…

DMARC Flow

DMARC Flow

“Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a scalable mechanism by which a mail-originating organization can express domain-level policies and preferences for message validation, disposition, and reporting, that a mail-receiving organization can use to improve mail handling.

Originators of Internet Mail need to be able to associate reliable and authenticated domain identifiers with messages, communicate policies about messages that use those identifiers, and report about mail using those identifiers. These abilities have several benefits: Receivers can provide feedback to Domain Owners about the use of their domains; this feedback can provide valuable insight about the management of internal operations and the presence of external domain name abuse.

DMARC does not produce or encourage elevated delivery privilege of authenticated email. DMARC is a mechanism for policy distribution that enables increasingly strict handling of messages that fail authentication checks, ranging from no action, through altered delivery, up to message rejection.”

Google G Suite has a guide to setting up a DMARC record here

Snip from the Google guide here..

“Spammers can sometimes forge the “From” address on email messages so the spam appears to come from a user in your domain. To help prevent this sort of abuse, Google is participating in DMARC.org, which gives domain owners more control over what Gmail does with spam email messages from their domain.

G Suite follows the DMARC.org standard and allows you to decide how Gmail treats unauthenticated emails coming from your domain. Domain owners can publish a policy telling Gmail and other participating email providers how to handle unauthenticated messages sent from their domain. By defining a policy, you can help combat phishing to protect users and your reputation.“

Login to your G Suite account and load this FAQ

Click Add A DMARC Record

Add DMARC

You will then need to set up a DKIM Domain Key (if you have not done so yet)

When you are done you need to choose your DMARC rules, I would suggest you go to https://mxtoolbox.com/DMARCRecordGenerator.aspx to generate a record

I generated these rules

Dmarc Rules

Warning: Setting a DMARC policy that is too strict may block mail from being delivered. Tighten rules over time.

Login to your DNS provider and add your TXT record.

DMARC Record

You should now have an SPF, DKIM and DMARC record in DNS.

DNS

Update: The SPD record above should be a TXT (Google led me astray)

DNS will take a while to replicate so do wait a few hours before checking again with the checkmx tool.

Now go to bed and wait for DNS to replicate.

Troubleshooting SPF

My TXT record would not validate with https://toolbox.googleapps.com/apps/checkmx/check

Google Toolbox

The MX Toolbox SPF checker reports that SPF records are deprecated and to use TXT records instead.

SPF TXT Record

Fix (remove the SPF record and add a TXT record with the same contents). Don’t forget to delete the old SPF record.

TXT Record

Results

SPF Setup

Reports

SPF/DKIM reports will let me know when unauthorized people send email from my domain.

This is a spf/dkim authentication-failure report for an email message received from IP 125.105.176.155 on Sat, 14 Apr 2018 13:14:09 +0800.
Below is some detail information about this message:
 1. SPF-authenticated Identifiers: none;
 2. DKIM-authenticated Identifiers: none;
 3. DMARC Mechanism Check Result: Identifier non-aligned, DMARC mechanism check failures;

For more information please check Aggregate Reports or mail to [email protected].



Feedback-Type: auth-failure
User-Agent: NtesDmarcReporter/1.0
Version: 1
Original-Mail-From: <[email protected]>
Arrival-Date: Sat, 14 Apr 2018 13:14:09 +0800
Source-IP: 125.105.176.155
Reported-Domain: fearby.com
Original-Envelope-Id: VcCowECJ7EIejtFanCHFLg--.51187S2
Authentication-Results: 163.com; dkim=none; spf=softfail [email protected]
Delivery-Result: delivered
Identity-Alignment: none



Received: from mitai (unknown [208.136.26.72])
	by fearby.com with SMTP id LyDKBHx6xsr7XZkf.1
	for <[email protected]>; Sat, 14 Apr 2018 13:14:03 +0800
Message-ID: <[email protected]>
From: =?utf-8?B?5rip5a6D?= <[email protected]>
To: <[email protected]>
Subject: =?utf-8?B?UmXvvJrlm57lpI3vvJrovazlj5HvvJrml7bpl7Q05pyIMjAtMjHml6XkuIo=?=
	=?utf-8?B?5rW3IOWcsOeCuSDnvo7oh6PljJblpoblk4Hlhazlj7jln7norq3ln7rlnLA=?=
Date: Sat, 14 Apr 2018 13:13:56 +0800
MIME-Version: 1.0
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_08FE_016CD6FE.1A359D20"
X-mailer: Bagf 2

Also, DMARC will alert me to unauthorized activity

<?xml version="1.0" encoding="UTF-8" ?>
<feedback>
  <report_metadata>
    <org_name>google.com</org_name>
    <email>[email protected]</email>
    <extra_contact_info>https://support.google.com/a/answer/2466580</extra_contact_info>
    <report_id>4329490063964523747</report_id>
    <date_range>
      <begin>1523750400</begin>
      <end>1523836799</end>
    </date_range>
  </report_metadata>
  <policy_published>
    <domain>fearby.com</domain>
    <adkim>r</adkim>
    <aspf>r</aspf>
    <p>quarantine</p>
    <sp>none</sp>
    <pct>5</pct>
  </policy_published>
  <record>
    <row>
      <source_ip>2001:19f0:5801:5fa:5400:ff:fe80:ec7a</source_ip>
      <count>2</count>
      <policy_evaluated>
        <disposition>none</disposition>
        <dkim>fail</dkim>
        <spf>fail</spf>
        <reason>
          <type>sampled_out</type>
          <comment></comment>
        </reason>
      </policy_evaluated>
    </row>
    <identifiers>
      <header_from>fearby.com</header_from>
    </identifiers>
    <auth_results>
      <spf>
        <domain>unknown</domain>
        <result>none</result>
      </spf>
    </auth_results>
  </record>
</feedback>

I hope this guide helps someone.

Ask a question or recommend an article

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Revision History

v1.4 Reports

v1.3 DMARC Flow image

V1.2 Updated wording

V1.1 Fixed typos (they were free)

v1.0 Initial post

Setting up a website to use Cloudflare on a VM hosted on Vultr and Namecheap

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This guide will show how you can set up a website to use Cloudflare on a VM hosted on Vultr and Namecheap

I have a number of guides on moving hasting away form CPanel, Setting up VM’s on AWS, Vultr or Digital Ocean along with installing and managing WordPress from the command line. This post will show how to let Cloudflare handle the DNS for the domain.

Update 2018: For the best performing VM host (UpCloud) read my guide on the awesome UpCloud VM hosts (get $25 free credit by signing up here).

Snip from here “Cloudflare’s enterprise-class web application firewall (WAF) protects your Internet property from common vulnerabilities like SQL injection attacks, cross-site scripting, and cross-site forgery requests with no changes to your existing infrastructure.”

Buy a Domain 

Buy a domain name from Namecheap here.

Domain names for just 88 cents!

Cloudflare Benefits (Free Plan)

  • DDoS Attack Protection (Huge network to absorb attacks DDoS attacks over 600Gbps are no problem for our 15 Tbps networks)
  • Global CDN
  • Shared SSL certificate (I disabled this and opted to use my own)
  • Access to audit logs
  • 3 page rules (maximum)

View paid plan options here.

Cloudflare CDN map

Cloudflare CDN says it can load assets up to 2x faster, 60% less bandwidth from your servers by delivering assets from 127 data centres.

Cloudflare Global Network

Setup

You will need to sign up at cloudflare.com

Cloudflare

After you create an account you will be prompted to add a siteAdd SiteCloudflare will pull your public DNS records to import.

Query DNS

You will be prompted to select a plan (I selected free)

Plan Select

Verify DNS settings to import.

DNS Import

You will now be asked to change your DNS nameservers with your domain reseller

DNS Nameservers

TIP: If you have an SSL cert (e.g Lets Encrypt) already setup head to the crypto section and select ” Full (Strict)” to prevent ERR_TOO_MANY_REDIRECTS errors.

Strict SSL

Cloudflare UI

I asked Twitter if they could kindly load my site so I could see if Cloudflare dashboard/stats were loading.

The Cloudflare CTO responded.  🙂

Confirm Cloudflare link to a domain from the OSX Comand line

Caching Rule

I set up the following caching rule to cache everything for 8 hours instead of WordPress pages

Page Rules

“fearby.com.com/wp-*” Cache level: Bypass

“fearby.com.com/wp-admin/post.php*” Cache level: Bypass

“fearby.com/*” Cache Everything, Edge Cache TTL: 8 Hours

Cache Results

Cache appears to be sitting at 50% after 12 hours.  having cache os dynamic pages out there is ok unless I need to fix a typo, then I need to login to Cloudflare and clear the cache manually (or wait 8 hours)

Performance after a few hours

DNS times in gtmetrix have now fallen to a sub 200ms (Y Slow is now a respectable A, it was a C before).  I just need to wait for caching and minification to kick in.

DNS Improved

webpagetest.org results are awesome

See here: https://www.webpagetest.org/result/180314_PB_7660dfbe65d56b94a60d7a604ca250b3/

  • Load Time: 1.80s
  • First Byte 0.176s
  • Start Render 1.200s

webpagetest

Google Page Speed Insights Report

Mobile: 78/100

Desktop: 87/100

Check with https://developers.google.com/speed/pagespeed/insights/

Update 24th March 2018 Attacked?

I noticed a spike in and traffic (incoming and threats) on the 24th of March 2018.

I logged into Cloudflare on my mobile device and turned on Under Attack Mode.

Under Attack Flow

Cloudflare was now adding a delay screen in the middle of my initial page load. Read more here.  A few hours after the Attach started it was over.

After the Attack

I looked at the bandwidth and found no increase in traffic from my initial host VM. Nice.

cloudflare-attack-001

Thanks, Cloudflare.

Cloudflare Pros

  • Enabling Attack mode was simple.
  • Soaked up an attack.
  • Free Tier
  • Many Reports
  • Option to force HTTPS over HTTP
  • Option to ban/challenge suspicious IP’s and set challenge timeframes.
  • Ability to setup IP firewall rules and Application Firewalls.
  • User-agent blocking
  • Lockdown URL’s to IP’s (pro feature)
  • Option to minify Javascript, CSS and HTML
  • Option to accelerate mobile links
  • Brotli compression on assets served.
  • Optio to enable BETA Rocket loader for Javascript performance tweaks.
  • Run Javascript service workers from the 120+ CDN’s
  • Page/URL rules o perform custom actions (redirects, skip cache, Encryption etc)
  • HTTP/2 on, IPV6 ON
  • Option to setup load balancing/failover
  • CTO of Cloudflare responded in Twitter 🙂
  • Option to enable rate limiting (charged at 10,000 hits for $0.05c)
  • Option to block countries (pro feature)
  • Option to install apps in Cloudflare like(Goole Analytics,

Cloudflare Cons

  • No more logging into NameCheap to perform DNS management (I now goto Cloudflare, Namecheap are awesome).
  • Cloudflare Support was slow/confusing (I ended up figuring out the redirect problem myself).
  • Some sort of verify Cloudflare Setup/DNS/CDN access would be nice. After I set this up my gtmetrix load times were the same and I was not sure if DNS needs to replicate? Changing minify settings in Cloudflare did not seem to happen.
  • WordPress draft posts are being cached even though page riles block wp-admin page caching.
  • Would be nice to have ad automatic Under Attack mode
  • Now all sub-domains were transferred in the setup ( id did not know for weeks)

Cloudflare status

Check out https://www.cloudflarestatus.com/ for status updates.

Don’t forget to install the CloudFlare Plugin for WordPress if you use WordPress.

More Reading

Check out my OWASP Zap and Kali Linux self-application Penetration testing posts.

I hope this guide helps someone.

Ask a question or recommend an article

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Revision History

v1.8 host Command from the OSX CLI

v1.7 Subdomain error

v1.6 Cloudflare Attack

v1.5 WordPress Plugin

v1.4 More Reading

v1.3 added WAF snip

v1.2 Added Google Page Speed Insights and webpage rest results

v1.1 Added Y-Slow

v1.0 Initial post