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# paths
app_path = "/home/example/www.example.com"
working_directory "#{app_path}/current"
pid "#{app_path}/current/tmp/pids/unicorn.pid"
# listen
listen "/tmp/unicorn-www.example.com.socket", :backlog => 64
# logging
stderr_path "log/unicorn.stderr.log"
stdout_path "log/unicorn.stdout.log"
# workers
worker_processes 3
# use correct Gemfile on restarts
before_exec do |server|
ENV['BUNDLE_GEMFILE'] = "#{app_path}/current/Gemfile"
end
# preload
preload_app true
before_fork do |server, worker|
# the following is highly recomended for Rails + "preload_app true"
# as there's no need for the master process to hold a connection
if defined?(ActiveRecord::Base)
ActiveRecord::Base.connection.disconnect!
end
# Before forking, kill the master process that belongs to the .oldbin PID.
# This enables 0 downtime deploys.
old_pid = "#{server.config[:pid]}.oldbin"
if File.exists?(old_pid) && server.pid != old_pid
begin
Process.kill("QUIT", File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
# someone else did our job for us
end
end
end
after_fork do |server, worker|
if defined?(ActiveRecord::Base)
ActiveRecord::Base.establish_connection
end
end