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- # Sample verbose configuration file for Unicorn (not Rack)
- #
- # This configuration file documents many features of Unicorn
- # that may not be needed for some applications. See
- # http://unicorn.bogomips.org/examples/unicorn.conf.minimal.rb
- # for a much simpler configuration file.
- #
- # See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete
- # documentation.
- # Use at least one worker per core if you're on a dedicated server,
- # more will usually help for _short_ waits on databases/caches.
- worker_processes 1
- # Since Unicorn is never exposed to outside clients, it does not need to
- # run on the standard HTTP port (80), there is no reason to start Unicorn
- # as root unless it's from system init scripts.
- # If running the master process as root and the workers as an unprivileged
- # user, do this to switch euid/egid in the workers (also chowns logs):
- # user "unprivileged_user", "unprivileged_group"
- APP_PATH = "/var/www"
- # Help ensure your application will always spawn in the symlinked
- # "current" directory that Capistrano sets up.
- working_directory APP_PATH # available in 0.94.0+
- # listen on both a Unix domain socket and a TCP port,
- # we use a shorter backlog for quicker failover when busy
- listen "/tmp/.sock", :backlog => 64
- listen 8080, :tcp_nopush => true
- # nuke workers after 30 seconds instead of 60 seconds (the default)
- timeout 30
- # feel free to point this anywhere accessible on the filesystem
- pid APP_PATH + "/tmp/pids/unicorn.pid"
- # By default, the Unicorn logger will write to stderr.
- # Additionally, ome applications/frameworks log to stderr or stdout,
- # so prevent them from going to /dev/null when daemonized here:
- stderr_path APP_PATH + "/log/unicorn.stderr.log"
- stdout_path APP_PATH + "/log/unicorn.stdout.log"
- # combine Ruby 2.0.0dev or REE with "preload_app true" for memory savings
- # http://rubyenterpriseedition.com/faq.html#adapt_apps_for_cow
- preload_app true
- GC.respond_to?(:copy_on_write_friendly=) and
- GC.copy_on_write_friendly = true
- # Enable this flag to have unicorn test client connections by writing the
- # beginning of the HTTP headers before calling the application. This
- # prevents calling the application for connections that have disconnected
- # while queued. This is only guaranteed to detect clients on the same
- # host unicorn runs on, and unlikely to detect disconnects even on a
- # fast LAN.
- check_client_connection false
- 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
- defined?(ActiveRecord::Base) and
- ActiveRecord::Base.connection.disconnect!
- # The following is only recommended for memory/DB-constrained
- # installations. It is not needed if your system can house
- # twice as many worker_processes as you have configured.
- #
- # # This allows a new master process to incrementally
- # # phase out the old master process with SIGTTOU to avoid a
- # # thundering herd (especially in the "preload_app false" case)
- # # when doing a transparent upgrade. The last worker spawned
- # # will then kill off the old master process with a SIGQUIT.
- # old_pid = "#{server.config[:pid]}.oldbin"
- # if old_pid != server.pid
- # begin
- # sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
- # Process.kill(sig, File.read(old_pid).to_i)
- # rescue Errno::ENOENT, Errno::ESRCH
- # end
- # end
- #
- # Throttle the master from forking too quickly by sleeping. Due
- # to the implementation of standard Unix signal handlers, this
- # helps (but does not completely) prevent identical, repeated signals
- # from being lost when the receiving process is busy.
- # sleep 1
- end
- after_fork do |server, worker|
- # per-process listener ports for debugging/admin/migrations
- # addr = "127.0.0.1:#{9293 + worker.nr}"
- # server.listen(addr, :tries => -1, :delay => 5, :tcp_nopush => true)
- # the following is *required* for Rails + "preload_app true",
- defined?(ActiveRecord::Base) and
- ActiveRecord::Base.establish_connection
- # if preload_app is true, then you may also want to check and
- # restart any other shared sockets/descriptors such as Memcached,
- # and Redis. TokyoCabinet file handles are safe to reuse
- # between any number of forked children (assuming your kernel
- # correctly implements pread()/pwrite() system calls)
- end
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