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puma--puma/projects/mongrel_cluster/README

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== Mongrel Cluster Plugin
Tool to help start/stop/restart multiple mongrel servers to use behind a load balancer like Apache 2.2 (mod_proxy_balancer), Lighttpd, Pound, Pen or Balance. This plugin adds an option to specify a number of Mongrel servers to launch, a range of ports, and a configuration file for the cluster. Use "-h" to see command syntax.
Configure cluster and write configuration file:
mongrel_rails cluster::configure
Start cluster:
mongrel_rails cluster::start
Restart cluster:
mongrel_rails cluster::restart
Stop cluster:
mongrel_rails cluster::stop
Capistrano Recipe
Add to config/deploy.rb:
require 'mongrel_cluster/recipes'
Example usage:
cap -a configure_mongrel_cluster
Variables
mongrel_servers: Number of Mongrel servers to start.
mongrel_port: Starting port to bind to.
mongrel_address: Address to bind to.
mongrel_environment: Rails environment to run as.
mongrel_conf: Path to conf file. Defaults to /etc/mongrel_cluster/app_name.conf
mongrel_user: User to run mongrels in cluster as. Unset by default
mongrel_group: Group to run mongrels in cluster as. Unset by default.
Tasks (performed on :app role)
configure_mongrel_cluster: Configure the cluster with variables.
start_mongrel_cluster: Start Mongrel processes on the app server.
stop_mongrel_cluster: Stop the Mongrel processes on the app server.
restart_mongrel_cluster: Restart the Mongrel processes on the app server by starting and stopping mongrel_cluster.
restart: Calls restart_mongrel_cluster to allow Mongrel to be used with the standard Capistrano deploy task.
spinner: Calls start_mongrel_cluster to allow Mongrel to be used with the standard Capistrano cold_deploy task.
Supporting starting clusters on boot.
1. Create mongrel_cluster conf directory (/etc/mongrel_cluster).
2. Assign ownership to your capistrano user.
3. Copy the init.d script from this gem's resouces directory /etc/init.d.
4. chmod +x /etc/init.d/mongrel_cluster
5. Add to init.d startup. On RHEL/CentOS use: /sbin/chkconfig --level 345 mongrel_cluster on