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Monit template files
check process redis
start program = "/usr/bin/redis-server /etc/redis/redis.conf"
stop program = "/usr/bin/redis-cli -p 6379 shutdown"
with pidfile /var/run/redis.pid
# /config/initializers/redis.rb
$redis = Redis.new
check process sidekiq with pidfile <%= sidekiq_pid %>
start program = "/etc/init.d/sidekiq_<%= application %> start"
stop program = "/etc/init.d/sidekiq_<%= application %> stop"
if totalmem is greater than 200 MB for 2 cycles then restart
working_directory "<%= current_path %>"
pid "<%= unicorn_pid %>"
stderr_path "<%= unicorn_log %>"
stdout_path "<%= unicorn_log %>"
listen "/tmp/unicorn.<%= application %>.sock"
worker_processes <%= unicorn_workers %>
timeout 30
preload_app true
before_fork do |server, worker|
# Disconnect since the database connection will not carry over
if defined? ActiveRecord::Base
ActiveRecord::Base.connection.disconnect!
end
# Quit the old unicorn process
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|
# https://github.com/redis/redis-rb/blob/master/examples/unicorn/unicorn.rb
# Redis.current.quit
# https://github.com/mperham/sidekiq/wiki/Problems-and-Troubleshooting
# Sidekiq.configure_client do |config|
# config.redis = { size: 1 }
# end
# Start up the database connection again in the worker
if defined?(ActiveRecord::Base)
ActiveRecord::Base.establish_connection
end
end
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