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Drupal on Virtualised Infrastructure - AWS - Generic VPS - etc. Charles CorrigaN – 19 th March 2013. It started with a KICKSTARTER campaign. http :// www.kickstarter.com/projects/224590870/the-guide-to-glorantha Wild success, raised much more than expected!

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Drupal on virtualised infrastructure aws generic vps etc

Drupal on Virtualised Infrastructure- AWS- Generic VPS- etc.

Charles CorrigaN – 19th March 2013


It started with a kickstarter campaign
It started with a KICKSTARTER campaign

  • http://www.kickstarter.com/projects/224590870/the-guide-to-glorantha

  • Wild success, raised much more than expected!

  • Attracted a lot of traffic to the website

  • Shared hosting provider told us we were using too much CPU

  • After warnings, provider cut our service for 24 hours

  • We needed an alternative. Quickly!


Rescued by drupal planet
Rescued by Drupal planet

  • Just before that happened, I flagged a blog posting by Randall Knutson

  • http://www.leveltendesign.com/blog/randall-knutson/create-high-performance-drupal-server-just-30-month

  • I ended up not following his recipe exactly 


What i will cover
What I will cover

  • Choosing a provider

  • Creating a server in AWS

  • Choosing an operating system

  • Installing and configuring the software stack on Ubuntu


Definitions
Definitions

  • Virtualisation

    • Partitioning a ‘large’ physical resource in such a way that a user of a virtual partition appears to have full access to and control of a smaller physical resource.

    • Computer – CPU + Memory

    • Storage

    • and much more, outside the scope of this discussion

  • VPS – Virtual Private Server

  • AWS – Amazon Web Services


Providers
providerS

  • Acquia– https://www.acquia.com/products-services/acquia-cloud – Drupal specialists, value add layered on AWS

  • AWS (Amazon Web Services) – http://aws.amazon.com/– datacenter in Singapore

  • Softlayer– http://www.softlayer.com/cloudlayer/ – datacenter in Singapore

  • Azure (Microsoft) – http://www.windowsazure.com/ – Windows, datacenter in Singapore

  • Rackspace – http://www.rackspace.com/cloud/overview/

  • many more


What we decided
What we decided

  • We ended up choosing a cheap provider, local to my friend’s business and home

    • A2 Hosting – http://www.a2hosting.com/


Aws amazon web services
AWS – Amazon Web Services

  • Amazon provide a number of different virtualisation services via the web

  • The base virtual computing service is EC2 or Elastic Cloud Compute

  • Can create configurations from basic up to multiple load-balanced servers

  • A basic EC2 instance can service a moderately loaded Drupal site

    • costs around US$30 / SG$40 per month

    • the first month should be free

  • Getting started documentation

  • http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EC2_GetStarted.html


Creating a vps with aws
Creating a VPS with AWS

  • Sign up to AWS at http://aws.amazon.com/ – have your credit card ready!

  • Go to the EC2 console at https://console.aws.amazon.com/ec2/v2/home

  • Choose a region by price (USA regions can be slightly cheaper);or by location (close to users for performance or legal reasons)

  • Click on the “Launch Instance” button

  • Name the virtual server (important if you will have multiple servers)

  • Create (or re-use) an SSH key pair to allow you to login to the server

  • Choose the base operating system image (the Launch Configuration)

  • Click Continue

  • Optionally click Edit Details for advanced settings

  • Click Launch




Your new virtual server
Your new Virtual Server

  • A short while later (half a minute), your new server should be up and running.

  • More to do, more to do…

    • Set up and assign a fire-wall policy, through Security Groups

    • If you want a publicly accessible server, create and assign an Elastic IPs address

    • If you want additional ‘disks’, create and assign volume(s) in Elastic Block Store

    • Connect to the new server, using SSH and the Key Pair generated earlier

    • Install the additional packages and configure services







Advice setting up an ubuntu server
Advice: Setting up AN UBUNTU Server

  • Try to locate Ubuntu packages rather than installing software from other sources

    • Installing from other sources may compromise your ability to cleanly upgrade the operating system in future, with potential security implications

    • Exceptions: Drupal  and other web-facing packages written in scripting languages

  • Try to avoid directly updating the settings files created by Ubuntu

    • For major packages, Ubuntu provides simple ways to safely override settings

    • Directly updating settings files may compromise your ability to cleanly upgrade the operating system in future, possibly leading to your important changed settings being lost during an upgrade





  • PHP

    • Create files with settings overrides in /etc/php5/conf.d

    • Typical PHP overrides – exact values depend on your requirements

      • upload_max_filesize = 4M

      • memory_limit = 256M

      • include_path = ".:/usr/share/php“

  • APC settings

    • apc.shm_size = 64M ; add 48 - 64M per additional Drupal site

    • apc.apc.stat = 0

  • Memcache settings

    • memcache.hash_strategy="consistent"


  • Apache
    Apache

    • Enable modules by adding symbolic links in /etc/apache2/mods-enabledto the required file(s) from /etc/apache2/mods-available

      • There may be 2 settings files for 1 module: eg. alias.load and alias.conf

  • Remove unwanted modules by removing the link(s) in/etc/apache2/mods-enabled

  • Create your site definitions in /etc/apache2/sites-availableand enable the site by creating a symbolic link in /etc/apache2/sites-enabled

    • Particularly useful when creating several virtual hosts

  • Create files with settings overrides in /etc/apache2/conf.d


  • Nearly there
    Nearly there

    • Install uploadprogress; type the following commands

      • pecl install uploadprogress

      • echo 'extension=uploadprogress.so' > /etc/php5/conf.d/uploadprogress.ini

    • I haven’t found an Ubuntu package for this

    • The 2nd line is an example of how to cleanly set up a PHP override

  • Reboot the server

  • Start setting up Drupal in the default location of /var/www

  • After Drupal is set up and confirmed working…


  • Enable memcache
    Enable memcache

    • Drupal 6: add the following lines to sites/default/settings.php

      • $conf['cache_inc'] = 'sites/all/modules/memcache/memcache.inc';

      • $conf['memcache_key_prefix'] = 'something_unique';

    • Drupal 7: add the following lines to sites/default/settings.php

      • $conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';

      • $conf['cache_default_class'] = 'MemCacheDrupal';

      • $conf['memcache_key_prefix'] = 'something_unique';

    Only important if you are hosting multiple sites


    Web administration
    Web administration

    • Webmin– http://webmin.com/

      • Not packaged

      • Moderately complex to install

      • More focused on server administration

    • ISPConfig – http://www.ispconfig.org/

      • Not packaged

      • Difficult to work out and install all dependencies

      • Very complex to install, required a lot of research and hand editing to complete

      • Easier to use for common tasks, such as to create virtualised email and websites within the virtual server


    Back ups
    Back-ups

    • I have yet to do this correctly!

    • I am currently only backing up database and keeping the backups on the virtual server!

    • Drupal Planet and Randall Knutson to the rescue again

    • http://www.leveltendesign.com/blog/randall-knutson/yet-another-simple-amazon-s3-backup-script-drupal



    • apt-get install apache2 mysql-client mysql-server libapache2-mod-php5 php5-cli php5-mysql memcacheddrush php5-curl php5-gd php5-geoip php5-imagick php5-mcrypt php5-memcache php5-memcached php-apcawstats curl diff geoip-database git-core less patch make phpmyadminphp-pear unzip vim webalizerwget


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