Deploying Joomla using Capistrano 2.0

Written on August 14, 2007 by ceefour

Who said Capistrano is for Ruby on Rails only?

That’s probably the major tagline of the whole Capistrano 2.0 saga. You can use it to deploy PHP, Django, or not doing any deployment at all. Let me demonstrate, this time using Joomla:

Capistrano adalah library/tool yang digunakan untuk meng-online-kan aplikasi Ruby on Rails, tapi bisa juga digunakan untuk aplikasi PHP, misalnya Joomla:

ceefour@ojalanow:~/project/layout_mania/trunk$ cap deploy
  * executing `deploy'
  * executing `deploy:update'
 ** transaction: start
  * executing `deploy:update_code'
  * executing "svn checkout -q --username ceefour --no-auth-cache -r11 http://tools.assembla.com/svn/layout_mania/trunk /home/rainbow/apps/layout_mania/releases/20070814160555 && (echo 11 > /home/rainbow/apps/layout_mania/releases/20070814160555/REVISION)"
    servers: ["rainbowpurple.com"]
    [rainbowpurple.com] executing command
    command finished
  * executing `deploy:finalize_update'
  * executing "chmod -R g+w /home/rainbow/apps/layout_mania/releases/20070814160555"
    servers: ["rainbowpurple.com"]
    [rainbowpurple.com] executing command
    command finished
    triggering after callbacks for `deploy:finalize_update'
  * executing `deploy:symlink_secret'
  * executing "ln -s /home/rainbow/apps/layout_mania/secret /home/rainbow/apps/layout_mania/releases/20070814160555/secret"
    servers: ["rainbowpurple.com"]
    [rainbowpurple.com] executing command
    command finished
  * executing `deploy:use_live_configuration'
  * executing "cp -f /home/rainbow/apps/layout_mania/releases/20070814160555/joomla/configuration.php.live /home/rainbow/apps/layout_mania/releases/20070814160555/joomla/configuration.php"
    servers: ["rainbowpurple.com"]
    [rainbowpurple.com] executing command
    command finished
  * executing `deploy:symlink_cache'
  * executing "rm -rf /home/rainbow/apps/layout_mania/releases/20070814160555/joomla/cache && ln -s /home/rainbow/apps/layout_mania/shared/cache /home/rainbow/apps/layout_mania/releases/20070814160555/joomla/cache"
    servers: ["rainbowpurple.com"]
    [rainbowpurple.com] executing command
    command finished
  * executing `deploy:symlink'
  * executing "rm -f /home/rainbow/apps/layout_mania/current && ln -s /home/rainbow/apps/layout_mania/releases/20070814160555 /home/rainbow/apps/layout_mania/current"
    servers: ["rainbowpurple.com"]
    [rainbowpurple.com] executing command
    command finished
 ** transaction: commit
  * executing `deploy:restart'

The result? layout-mania.humblia.com. Below is the source code of deploy/config.rb used to deploy this Joomla app.

Hasilnya? layout-mania.humblia.com. Di bawah ini adalah source code dari file konfigurasi Capistrano deploy/config.rb yang digunakan untuk aplikasi ini.

set :application, "layout_mania"
set :repository,  "http://tools.assembla.com/svn/layout_mania/trunk"

# If you aren't deploying to /u/apps/#{application} on the target
# servers (which is the default), you can specify the actual location
# via the :deploy_to variable:
set :deploy_to, "/home/rainbow/apps/#{application}"
set :user, "rainbow"
set :scm_username, 'ceefour'
set :use_sudo, false
set :cache_path, "#{shared_path}/cache"
set :media_path, "#{shared_path}/media"

# If you aren't using Subversion to manage your source code, specify
# your SCM below:
# set :scm, :subversion

role :app, "rainbowpurple.com"
role :web, "rainbowpurple.com"
role :db,  "rainbowpurple.com", :primary => true

after 'deploy:finalize_update', 'deploy:symlink_secret'
after 'deploy:finalize_update', 'deploy:use_live_configuration'
after 'deploy:finalize_update', 'deploy:symlink_cache'

namespace :deploy do

  # Overwritten to provide flexibility for people who aren't using Rails.
  task :setup, :except => { :no_release => true } do
    dirs = [deploy_to, releases_path, shared_path, cache_path, media_path]
    dirs += %w(system).map { |d| File.join(shared_path, d) }
    run "umask 02 && mkdir -p #{dirs.join(' ')}"
  end

  # Also overwritten to remove Rails-specific code.
  task :finalize_update, :except => { :no_release => true } do
    run "chmod -R g+w #{release_path}" if fetch(:group_writable, true)
  end

  # Each of the following tasks are Rails specific. They're removed.
  task :migrate do
  end

  task :migrations do
  end

  task :cold do
  end

  task :start do
  end

  task :stop do
  end

  # Do nothing (To restart apache, run 'cap deploy:apache:restart')
  task :restart do
  end

  task :use_live_configuration, :roles => :app do
    run "cp -f #{release_path}/joomla/configuration.php.live #{release_path}/joomla/configuration.php"
  end

  task :symlink_cache, :roles => :app do
    run "rm -rf #{release_path}/joomla/cache && ln -s #{cache_path} #{release_path}/joomla/cache"
  end
  task :symlink_secret, :roles => :app do
    run "ln -s #{deploy_to}/secret #{release_path}/secret"
  end

end

namespace :db do

  desc "Overwrite the remote database with local database."
  task :push_force, :roles => :db do
    system "mysqldump --opt rainbow_layoutmania | bzip2 > /tmp/rainbow_layoutmania.sql.bz2"
    system "rsync -vPa /tmp/rainbow_layoutmania.sql.bz2 rainbowpurple.com:tmp/"
    run "bunzip2 -dc /home/rainbow/tmp/rainbow_layoutmania.sql.bz2 | mysql -u rainbow_layoutma -p`cat #{deploy_to}/secret/db_password` rainbow_layoutmania"
    run "rm -f /home/rainbow/tmp/rainbow_layoutmania.sql.bz2"
    system "rm -f /tmp/rainbow_layoutmania.sql.bz2"
  end

  desc "Optimize remote database."
  task :optimize, :roles => :db do
    run "mysqlcheck --analyze --repair --optimize --user=rainbow_layoutma --password=`cat #{deploy_to}/secret/db_password` rainbow_layoutmania"
  end

end

Interested? Unfortunately this isn’t a tutorial. Look more on the resources below:

Tertarik? Sayang sekali ini bukan tutorial, coba cari informasi lebih lanjut di:

• Capistrano 2.0 official site
• Capistrano Wiki
• Deploy any project using Capistrano 2
• Automate the deployment of any PHP project using Capistrano 2.0
• Jamis Buck’s blog (creator, lead developer, and chief inventor of Capistrano )
• Capistrano and the Rails Application Lifecycle book from O’Reilly

Note: Sorry for dual-language posting, any better suggestion?

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