DZone Snippets: mongrel code

Mongrel and Apache fun with Capistrano 2.0

hmans (Hendrik Mans) — Fri, 07 Sep 2007 16:31:34 GMT

I got the Mongrel recipes from somewhere else -- I sadly don't remember where -- and modified them a bit.



namespace :deploy do

  namespace :mongrel do

    [ :stop, :start, :restart ].each do |t|

      desc "#{t.to_s.capitalize} the mongrel appserver"

      task t, :roles => :app do

        run "mongrel_rails cluster::#{t.to_s} --clean -C #{mongrel_conf}"

      end

    end

  end

  

  namespace :apache do

    desc "Start Apache"

    task :start, :roles => :web do

      sudo "/etc/init.d/httpd start > /dev/null"

    end



    desc "Stop Apache"

    task :stop, :roles => :web do

      sudo "/etc/init.d/httpd stop > /dev/null"

    end



    desc "Restart Apache"

    task :restart, :roles => :web do

      sudo "/etc/init.d/httpd restart > /dev/null"

    end

  end



  desc "Custom restart task for mongrel cluster"

  task :restart do

    deploy.mongrel.restart

    deploy.apache.restart

  end



  desc "Custom start task for mongrel cluster"

  task :start, :roles => :app do

    deploy.mongrel.start

    deploy.apache.start

  end



  desc "Custom stop task for mongrel cluster"

  task :stop, :roles => :app do

    deploy.apache.stop

    deploy.mongrel.stop

  end



end

Mongrel Startup Script

timmorgan (Tim Morgan) — Thu, 14 Sep 2006 18:42:32 GMT

I couldn't find one that did exactly what I wanted, so I cooked up this ruby script. Be sure to change app_dir and apps near the top to match your environment. On my ubuntu/debian server, this script resides in /etc/init.d. I ran "sudo update-rc.d -f mongrel defaults" to make it run on startup.



#!/usr/bin/env ruby

#

# mongrel       Startup script for Mongrel by Tim Morgan

#

# chkconfig: - 85 15

# description: mongrel manages Mongrel

#



app_dir = '/var/rails'



apps = {

  'hpy' => 8001,

  '43verses' => 8002

}



if ['stop', 'restart'].include? ARGV.first

  apps.each do |path, port|

    path = File.join app_dir, path

    puts "Stopping #{path}..."

    `mongrel_rails stop -c #{path} -P log/mongrel.pid`

  end

end



if ['start', 'restart'].include? ARGV.first

  apps.each do |path, port|

    path = File.join app_dir, path

    puts "Starting #{path} on #{port}..."

    `mongrel_rails start -d -p #{port} -e production -c #{path} -P log/mongrel.pid`

  end

end



unless ['start', 'stop', 'restart'].include? ARGV.first

    puts "Usage: mongrel {start|stop|restart}"

    exit

end

Exempt directories from Apache's ProxyPass directive

jswizard (JavaScript Wizard) — Thu, 17 Aug 2006 05:25:50 GMT

Very useful if forwarding to Mongrel, etc.



        ProxyPass /stylesheets !

        ProxyPass /javascripts !

        ProxyPass /images !     

        ProxyPass / http://127.0.0.1:3010/

        ProxyPassReverse / http://127.0.0.1:3010/

Mongrel Spinner and Restart tasks for Capistrano

jchris (Chris Anderson) — Wed, 17 May 2006 10:18:22 GMT

These tasks should work with the default deploy.rb file. I assume you've at least read the Capistrano manual at rubyonrails.com, also, you should get your app running on mongrel first with manual booting and restarting before you try to automate.

h2. Spinner



desc <<-DESC

Spinner is run by the default cold_deploy task. Instead of using script/spinner, we're just gonna rely on Mongrel to keep itself up.

DESC

task :spinner, :roles => :app do

  application_port = xxxx #get this from your friendly sysadmin

  run "mongrel_rails start -e production -p #{application_port} -d -c #{current_path}"

end

h2. Restart



desc "Restart the web server"

task :restart, :roles => :app do

  begin

    run "cd #{current_path} && mongrel_rails restart"

  rescue RuntimeError => e

    puts e

    puts "Probably not a big deal, so I'll just keep trucking..."

  end

end

There's a more complete article on my blog.

Mongrel on Win32 as Service

MattScilipoti (Matt Scilipoti) — Wed, 05 Apr 2006 09:44:32 GMT

Mongrel now has support for running as a Win32 service right out of the box. The support is still rough but works well enough that we decided to release it. You can thank Luis Lavena for working on this and making it so nice.

After you do the gem install, find a Rails application you want to run and do:



$ mongrel_rails_service install -n myapp -r c:\my\path\to\myapp -p 4000 -e production

$ mongrel_rails_service start -n myapp

Now hit the port and poof, works. Stopping the app is just done with:



$ mongrel_rails_service stop -n myapp

And, you can even set the CPU processor affinity for the service when yourun the install command. Can’t even do that on POSIX yet. Now that’s hot.

If you run into an app that’s not running right, my suggestion is to run it with the regular mongrel_rails runner:



$ cd c:\my\path\to\myapp

$ mongrel_rails start -p 4500

Since that will spit out error messages and stuff to the console. Use CTRL-Pause/Break to stop.