[ANN] mongrel_cluster 0.1.3 prerelease


Hi y’all,

A prerelease of mongrel_cluster 0.1.3 is available for testing with
the Mongrel 0.3.13 prerelease. This release contains bug fixes and
adds a Ruby script for managing all applications on a server with a
single command.

To install:
gem install mongrel_cluster --source=http://


  • Suppress output from mongrel_rails.
  • Added a verbose option (-v, --verbose) to print output from
  • Added support for changing the user/group of mongrel_rails process.
  • Added bin/mongrel_cluster_ctl to start/stop all clusters on a
    server. Usage: mongrel_cluster_ctl (start|stop|restart) [options]
  • Addred resources/mongrel_cluster
  • Fixed bugs in Capistrano recipes with mongrel_config variable.
  • Remove use_sudo from configure_mongrel_cluster task.
  • Changed restart_mongrel_cluster task to call stop/start.
  • Added Capistrano tasks to support mongrel_cluster_ctl.

Known issues:

  • Output suppression doesn’t quite work as expected. Some messages
    from “mongrel_rails start” are not suppressed.
  • Changing user/group should no-op if specified user/group is the
    same as caller (may require Mongrel patch).
  • Documentation.
  • Win32 needs love.

How to automatically start Mongrel clusters on system boot with

  1. Create /etc/mongrel_cluster
  2. Create a symlink to the configuration files of clusters that you
    want to automatically start/stop. You can also use the
    setup_mongrel_cluster_ctl Capistrano task.
  3. Setup start on boot and stop on shutdown. The gem contains an
    init.d script that works with RHEL/CentOS/Fedora.
    Red Hat systems:
    • Copy from the resources/mongrel_cluster bash script to /etc/
    • run “chkconfig --level 345 mongrel_cluster on” to enable
      running mongrel_cluster_ctl on start up.
    • start all clusters with “service mongrel_cluster start”
    • stop all clusters with “service mongrel_cluster stop”
      Other systems:
    • Look at the resources/mongrel_cluster bash script for example
      usage of mongrel_cluster_ctl from a bash script.
    • Modify as needed for your OS.
    • Email me a modified version for your OS and I will include in
      the final release. Please include instructions for starting on boot.

Please add bugs, requests, etc to the RubyForge tracker:

Bradley Taylor

Rails Machine
Simplified Ruby on Rails deployment


On May 25, 2006, at 5:41 AM, bradley taylor wrote:

Bradley Taylor

You're the man Bradley. Nice release.



Nice. Just want to pipe in and say that I’ve been using mongrel cluster
for a couple weeks or so and it’s just the leash that Mongrel needs when
using more than one server!