Created
July 12, 2010 03:34
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unicorn.rb
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# unicorn_rails -c /srv/myapp/current/config/unicorn.rb -E production -D | |
rails_env = ENV['RAILS_ENV'] || 'production' | |
working_directory (rails_env == 'production' ? "/srv/myapp/current" : `pwd`.gsub("\n", "")) | |
worker_processes (rails_env == 'production' ? 10 : 4) | |
preload_app true | |
timeout 30 | |
if rails_env == 'production' | |
listen '/tmp/unicorn.sock', :backlog => 2048 | |
pid "/srv/myapp/shared/pids/unicorn.pid" | |
stderr_path "/srv/myapp/shared/log/unicorn.log" | |
stdout_path "/srv/myapp/shared/log/unicorn.log" | |
else | |
listen 8080 | |
rails_root = `pwd`.gsub("\n", "") | |
pid "#{rails_root}/tmp/pids/unicorn.pid" | |
stderr_path "#{rails_root}/log/unicorn.log" | |
stdout_path "#{rails_root}/log/unicorn.log" | |
end | |
GC.copy_on_write_friendly = true if GC.respond_to?(:copy_on_write_friendly=) | |
before_fork do |server, worker| | |
ActiveRecord::Base.connection.disconnect! | |
## | |
# When sent a USR2, Unicorn will suffix its pidfile with .oldbin and | |
# immediately start loading up a new version of itself (loaded with a new | |
# version of our app). When this new Unicorn is completely loaded | |
# it will begin spawning workers. The first worker spawned will check to | |
# see if an .oldbin pidfile exists. If so, this means we've just booted up | |
# a new Unicorn and need to tell the old one that it can now die. To do so | |
# we send it a QUIT. | |
# | |
# Using this method we get 0 downtime deploys. | |
old_pid = Rails.env.production? ? "/srv/myapp/shared/pids/unicorn.pid.oldbin" : | |
"#{Rails.root}/tmp/pids/unicorn.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| | |
ActiveRecord::Base.establish_connection | |
worker.user('rails', 'rails') if Process.euid == 0 && rails_env == 'production' | |
end |
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You can do that with String#chomp too, by the way.