DRAFT …

Install RubyGems

   1  http://rubyforge.org/frs/download.php/29548/rubygems-1.0.1.tgz
   2  
   3  tar zxvf rubygems-1.0.1.tgz
   4  
   5  cd rubygems-1.0.1
   6  
   7  ruby setup.rb

Install Rails

   1  gem install rails

Install sqlite3 (optional)

   1  apt-get install sqlite3 libsqlite3-dev
   2  gem install sqlite3-ruby

Install mongrel and mongrel_cluster

   1  $ gem install mongrel mongrel_cluster
   2  
   3  $ mongrel_rails cluster::configure -e production \
   4    -p 8000 \
   5    -a 127.0.0.1 \
   6    -N 3 \
   7    -c /var/www/xyz/current
   8  
   9  
  10  $ mongrel_rails cluster::start
  11  
  12  
  13  $ useradd -g www-data -d /var/www mongrel

Surviving reboots

   1  sudo mkdir /etc/mongrel_cluster
   2  
   3  sudo ln -s /var/www/xyz/config/mongrel_cluster.yml /etc/mongrel_cluster/xyz.yml
   4  
   5  sudo cp /usr/local/lib/ruby/gems/1.8/gems/mongrel_cluster-1.0.5/resources/mongrel_cluster /etc/init.d/
   6  
   7  sudo chmod +x /etc/init.d/mongrel_cluster
   8  
   9  sudo /usr/sbin/update-rc.d -f mongrel_cluster defaults
  10  
  11  mongrel_cluster_ctl status

Stale pids

If your mongrels crash or if you kill them, mongrel_cluster won’t start your mongrels because mongrel_cluster believes the processes are still running, instead mongrel_cluster complains and does nothing:

   1  ** !!! PID file tmp/pids/mongrel.8000.pid already exists.  Mongrel could be running already.  Check your log/mongrel.8000.log for errors.
   2  ** !!! Exiting with error.  You must stop mongrel and clear the .pid before I'll attempt a start.

To fix this simply add the —clean switch to the /usr/local/lib/ruby/gems/1.8/gems/mongrel_cluster-1.0.5/resources/mongrel_cluster startup script:

   1  mongrel_cluster_ctl start -c $CONF_DIR --clean