97 lines
3.5 KiB
Ruby
97 lines
3.5 KiB
Ruby
# Set your full path to application.
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app_path = "/var/www/danbooru2/current"
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# Set unicorn options
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worker_processes 30
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timeout 60
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# listen "127.0.0.1:9000", :tcp_nopush => true
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listen "/tmp/.unicorn.sock", backlog: 1024
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# Spawn unicorn master worker for user apps (group: apps)
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user 'danbooru', 'danbooru'
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# Fill path to your app
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working_directory app_path
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# Should be 'production' by default, otherwise use other env
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rails_env = ENV['RAILS_ENV'] || 'production'
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# Log everything to one file
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stderr_path "/dev/null"
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stdout_path "/dev/null"
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# Set master PID location
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pid "#{app_path}/tmp/pids/unicorn.pid"
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# combine Ruby 2.0.0+ with "preload_app true" for memory savings
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preload_app true
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# Enable this flag to have unicorn test client connections by writing the
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# beginning of the HTTP headers before calling the application. This
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# prevents calling the application for connections that have disconnected
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# while queued. This is only guaranteed to detect clients on the same
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# host unicorn runs on, and unlikely to detect disconnects even on a
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# fast LAN.
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check_client_connection false
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# local variable to guard against running a hook multiple times
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run_once = true
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before_fork do |server, worker|
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# the following is highly recomended for Rails + "preload_app true"
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# as there's no need for the master process to hold a connection
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defined?(ActiveRecord::Base) && ActiveRecord::Base.connection.disconnect!
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# Occasionally, it may be necessary to run non-idempotent code in the
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# master before forking. Keep in mind the above disconnect! example
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# is idempotent and does not need a guard.
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if run_once
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# do_something_once_here ...
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run_once = false # prevent from firing again
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end
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# The following is only recommended for memory/DB-constrained
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# installations. It is not needed if your system can house
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# twice as many worker_processes as you have configured.
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#
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# # This allows a new master process to incrementally
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# # phase out the old master process with SIGTTOU to avoid a
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# # thundering herd (especially in the "preload_app false" case)
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# # when doing a transparent upgrade. The last worker spawned
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# # will then kill off the old master process with a SIGQUIT.
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# old_pid = "#{server.config[:pid]}.oldbin"
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# if old_pid != server.pid
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# begin
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# sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
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# Process.kill(sig, File.read(old_pid).to_i)
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# rescue Errno::ENOENT, Errno::ESRCH
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# end
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# end
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#
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# Throttle the master from forking too quickly by sleeping. Due
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# to the implementation of standard Unix signal handlers, this
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# helps (but does not completely) prevent identical, repeated signals
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# from being lost when the receiving process is busy.
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sleep 0.25
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end
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after_fork do |server, worker|
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if defined?(ActiveRecord::Base)
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ActiveRecord::Base.establish_connection
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end
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end
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# This runs when we send unicorn a SIGUSR2 to do a hot restart. We need to
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# clear out old BUNDLER_* and GEM_* environment variables, otherwise the new
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# worker will still use the old Gemfile from the previous deployment, which
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# will cause mysterious problems with libraries. BUNDLER_GEMFILE is the main
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# thing we need to clear, but we wipe everything for safety.
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#
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# https://bogomips.org/unicorn/Sandbox.html
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# https://jamielinux.com/blog/zero-downtime-unicorn-restart-when-using-rbenv/
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before_exec do |server|
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ENV.keep_if { |name, value| name.match?(/\A(RAILS_.*|UNICORN_.*|HOME)\z/) }
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ENV["PATH"] = "#{ENV["HOME"]}/.rbenv/shims:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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end
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