80 lines
2.2 KiB
Ruby
80 lines
2.2 KiB
Ruby
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# == God config file
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# http://god.rubyforge.org/
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# Authors: Gump and michael@glauche.de
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#
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# Config file for god that configures watches for each instance of a thin server for
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# each thin configuration file found in /etc/thin.
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# In order to get it working on Ubuntu, I had to make a change to god as noted at
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# the following blog:
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# http://blog.alexgirard.com/ruby-one-line-to-save-god/
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#
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require 'yaml'
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config_path = "/etc/thin"
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Dir[config_path + "/*.yml"].each do |file|
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config = YAML.load_file(file)
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num_servers = config["servers"] ||= 1
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(0...num_servers).each do |i|
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# UNIX socket cluster use number 0 to 2 (for 3 servers)
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# and tcp cluster use port number 3000 to 3002.
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number = config['socket'] ? i : (config['port'] + i)
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God.watch do |w|
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w.group = "thin-" + File.basename(file, ".yml")
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w.name = w.group + "-#{number}"
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w.interval = 30.seconds
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w.uid = config["user"]
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w.gid = config["group"]
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w.start = "thin start -C #{file} -o #{number}"
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w.start_grace = 10.seconds
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w.stop = "thin stop -C #{file} -o #{number}"
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w.stop_grace = 10.seconds
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w.restart = "thin restart -C #{file} -o #{number}"
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pid_path = config["chdir"] + "/" + config["pid"]
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ext = File.extname(pid_path)
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w.pid_file = pid_path.gsub(/#{ext}$/, ".#{number}#{ext}")
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w.behavior(:clean_pid_file)
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w.start_if do |start|
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start.condition(:process_running) do |c|
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c.interval = 5.seconds
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c.running = false
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end
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end
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w.restart_if do |restart|
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restart.condition(:memory_usage) do |c|
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c.above = 150.megabytes
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c.times = [3,5] # 3 out of 5 intervals
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end
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restart.condition(:cpu_usage) do |c|
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c.above = 50.percent
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c.times = 5
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end
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end
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w.lifecycle do |on|
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on.condition(:flapping) do |c|
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c.to_state = [:start, :restart]
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c.times = 5
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c.within = 5.minutes
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c.transition = :unmonitored
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c.retry_in = 10.minutes
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c.retry_times = 5
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c.retry_within = 2.hours
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end
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end
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end
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end
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end
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