151 lines
4.4 KiB
Ruby
151 lines
4.4 KiB
Ruby
# See http://unicorn.bogomips.org/Unicorn/Configurator.html
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# enable out of band gc out of the box, it is low risk and improves perf a lot
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ENV['UNICORN_ENABLE_OOBGC'] ||= "1"
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discourse_path = File.expand_path(File.expand_path(File.dirname(__FILE__)) + "/../")
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# tune down if not enough ram
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worker_processes (ENV["UNICORN_WORKERS"] || 3).to_i
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working_directory discourse_path
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# listen "#{discourse_path}/tmp/sockets/unicorn.sock"
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listen (ENV["UNICORN_PORT"] || 3000).to_i
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# nuke workers after 30 seconds instead of 60 seconds (the default)
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timeout 30
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# feel free to point this anywhere accessible on the filesystem
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pid "#{discourse_path}/tmp/pids/unicorn.pid"
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# By default, the Unicorn logger will write to stderr.
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# Additionally, some applications/frameworks log to stderr or stdout,
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# so prevent them from going to /dev/null when daemonized here:
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stderr_path "#{discourse_path}/log/unicorn.stderr.log"
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stdout_path "#{discourse_path}/log/unicorn.stdout.log"
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# important for Ruby 2.0
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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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initialized = false
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before_fork do |server, worker|
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unless initialized
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# load up the yaml for the localization bits, in master process
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I18n.t(:posts)
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# load up all models and schema
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(ActiveRecord::Base.connection.tables - %w[schema_migrations]).each do |table|
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table.classify.constantize.first rescue nil
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end
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# router warm up
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Rails.application.routes.recognize_path('abc') rescue nil
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# get rid of rubbish so we don't share it
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GC.start
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initialized = true
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supervisor = ENV['UNICORN_SUPERVISOR_PID'].to_i
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if supervisor > 0
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Thread.new do
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while true
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unless File.exists?("/proc/#{supervisor}")
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puts "Kill self supervisor is gone"
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Process.kill "TERM", Process.pid
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end
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sleep 2
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end
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end
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end
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sidekiqs = ENV['UNICORN_SIDEKIQS'].to_i
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if sidekiqs > 0
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puts "Starting up #{sidekiqs} supervised sidekiqs"
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require 'demon/sidekiq'
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Demon::Sidekiq.start(sidekiqs)
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class ::Unicorn::HttpServer
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alias :master_sleep_orig :master_sleep
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def max_rss
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rss = `ps -eo rss,args | grep sidekiq | grep -v grep | awk '{print $1}'`
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.split("\n")
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.map(&:to_i)
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.max
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rss ||= 0
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rss * 1024
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end
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def out_of_memory?
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max_allowed_size = [ENV['UNICORN_SIDEKIQ_MAX_RSS'].to_i, 500].max.megabytes;
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max_rss > max_allowed_size
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end
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def check_sidekiq_heartbeat
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@sidekiq_heartbeat_interval ||= 30.minutes
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@sidekiq_next_heartbeat_check ||= Time.new.to_i + @sidekiq_heartbeat_interval
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if @sidekiq_next_heartbeat_check < Time.new.to_i
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last_heartbeat = Jobs::RunHeartbeat.last_heartbeat
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restart = false
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if out_of_memory?
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Rails.logger.warn("Sidekiq is consuming too much memory (using: %0.2fM) for '%s', restarting" % [(max_rss.to_f / 1.megabyte), ENV["DISCOURSE_HOSTNAME"]])
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restart = true
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end
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if last_heartbeat < Time.new.to_i - @sidekiq_heartbeat_interval
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STDERR.puts "Sidekiq heartbeat test failed, restarting"
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Rails.logger.warn "Sidekiq heartbeat test failed, restarting"
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restart = true
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end
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@sidekiq_next_heartbeat_check = Time.new.to_i + @sidekiq_heartbeat_interval
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Demon::Sidekiq.restart if restart
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$redis.client.disconnect
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end
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end
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def master_sleep(sec)
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Demon::Sidekiq.ensure_running
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check_sidekiq_heartbeat
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master_sleep_orig(sec)
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end
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end
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end
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end
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ActiveRecord::Base.connection.disconnect!
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$redis.client.disconnect
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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 1
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end
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after_fork do |server, worker|
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Discourse.after_fork
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end
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