thin+god搭建rails服务器集群

安装thin sudo gem install thin

安装god sudo gem install god

配置god

?

# configure variables list below
app_dir?????????? = "项目路径"
service??????????? = "项目名称"
num_servers? = 5 // 开启服务器的个数
port???????????? = 9000 // 端口号
#user???????????? = "rocket_finance"
#group??????????? = "rocket_finance"
pid_path???????? = "#{app_dir}/tmp/pids/thin.pid"? pid存放的路径

?

(0...num_servers).each do |i|

number = port + i

God.watch do |w|
? ? w.group = "thin-#{service}"

? ? w.name = w.group + "-#{number}"

? ? w.interval = 30.seconds

? ? #w.uid = user

? ? #w.gid = group

? ? ext = File.extname(pid_path)

? ? w.pid_file = pid_path.gsub(/#{ext}$/, ".#{number}#{ext}")

? ? w.start = "thin start -c #{app_dir} -p #{number} -o #{number}"

? ? w.start_grace = 10.seconds

? ? w.stop = "thin stop -c #{app_dir} -P #{w.pid_file}"

? ? w.stop_grace = 10.seconds

? ? w.restart = "thin restart -c #{app_dir} -p #{number} -o #{number} -P #{w.pid_file}"

? ? w.behavior(:clean_pid_file)

?

??? w.start_if do |start|
????? start.condition(:process_running) do |c|
??????? c.interval = 5.seconds
??????? c.running? = false
??????? #c.notify?? = 'developers'
????? end
??? end

??? w.restart_if do |restart|
????? restart.condition(:memory_usage) do |c|
??????? c.above? = 150.megabytes
??????? c.times? = [3,5] # 3 out of 5 intervals
??????? #c.notify = 'developers'
????? end

????? restart.condition(:cpu_usage) do |c|
??????? c.above? = 50.percent
??????? c.times? = 5
??????? #c.notify = 'developers'
????? end
??? end

??? w.lifecycle do |on|
????? on.condition(:flapping) do |c|
??????? c.to_state???? = [:start, :restart]
??????? c.times??????? = 5
??????? c.within?????? = 5.minutes
??????? c.transition?? = :unmonitored
??????? c.retry_in???? = 10.minutes
??????? c.retry_times? = 5
??????? c.retry_within = 2.hours
??????? #c.notify?????? = 'developers'
????? end
??? end

end

运行 god -c config/thin.god? -D

OK

god status

thin-test-9000: up
thin-test-9001: up
thin-test-9002: up
thin-test-9003: up
thin-test-9004: up