Rails + supervisord (named sockets)

A recent upgrade of our project management software, Chili Project, was a good opportunity to make it run like other services - ran from Supervisord, connected via FastCGI. Unfortunately, Rails doesn't make it easy to listen for FCGI connections on a named socket.

After some research, I've found a way to run Chilli Project (and, in fact, any rails app) this way. I've put this little script into scripts/ subdirectory of the rails app:

	#!/usr/bin/env ruby
	# Run me from scripts/
	require File.dirname(__FILE__) + "/../config/environment"
	require 'fcgi_handler'
	require 'ruby_version_check'
	require 'initializer'
	require 'dispatcher'
	file = "/tmp/redmine.socket"
	if File.exist?(file)
	File.unlink(file)
	end
	server = UNIXServer.new(file)
	$stdin.reopen(server)
	puts "* Process listening on socket #{file}"
	load File.dirname(__FILE__) + '/../public/dispatch.fcgi'

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Also, for completeness: contents of /etc/supervisor/conf.d/redmine.conf

	[program:redmine]
	command = /usr/bin/ruby /path/to/redmine/script/fastcgi
	process_name = redmine
	autostart = true
	startsecs = 40
	user = www-data
	redirect_stderr = true
	stdout_logfile = /var/log/redmine.log
	environment = RAILS_ENV=production

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