Question

我正在尝试创建一个自定义守护程序，每隔60秒运行一次并启动/停止并使用bluepill监视它。

有人可以告诉我如何更容易地做到这一点，或者请你告诉我我做错了什么？

目前bluepill正在启动守护程序以便它运行但似乎不知道它的运行是继续尝试停止并启动它。

这是我的.pill文件中的代码

app.process("get_dropboxes") do |process|

   process.working_dir = RAILS_ROOT
   process.pid_file = File.join(RAILS_ROOT, "tmp", "pids", "get_dropbox.pid")  
   process.start_command = "/usr/bin/env RAILS_ENV=#{RAILS_ENV} bundle exec lib/daemons/get_dropbox_ctl start"
   process.stop_command = "/usr/bin/env RAILS_ENV=#{RAILS_ENV} bundle exec lib/daemons/get_dropbox_ctl stop"

   process.start_grace_time = 10.seconds
   process.stop_grace_time = 10.seconds
   process.restart_grace_time = 10.seconds

   process.checks :cpu_usage, :every => 30.seconds, :below => 20, :times => [3,5]
   process.checks :mem_usage, :every => 30.seconds, :below => 350.megabytes, :times => [3,5]

 end

这是我的get_dropbox_ctl文件

#!/usr/bin/env ruby
require 'rubygems'
require "daemons"
require 'yaml'
require 'erb'

gem 'activesupport', '>=3.0.0'
require 'active_support'

# For some reason, ActiveSupport 3.0.0 doesn't load.
# Load needed extension directly for now.
require "active_support/core_ext/object"
require "active_support/core_ext/hash"

options = YAML.load(
  ERB.new(
    IO.read(
      File.dirname(__FILE__) + "/../../config/daemons.yml"
  )).result).with_indifferent_access

options[:dir_mode] = options[:dir_mode].to_sym

Daemons.run File.dirname(__FILE__) + "/get_dropbox.rb", options

这是我的get_dropbox.rb文件

#!/usr/bin/env ruby

# You might want to change this
ENV["RAILS_ENV"] ||= "production"

require 'net/pop'
require File.dirname(__FILE__) + "/../../config/application"
Rails.application.require_environment!

$running = true
Signal.trap("TERM") do 
  $running = false
end

while($running) do


  # do stuff .......

  sleep 60
end

我得到的日志

[2011-07-13T16:55:00.464202 #32257]  WARN -- : [domain.com:get_dropboxes] pid_file /var/www/domain.com/current/tmp/pids/get_dropbox.pid does not exist or cannot be read
W, [2011-07-13T16:55:00.464315 #32257]  WARN -- : [domain.com:get_dropboxes] pid_file /var/www/domain.com/current/tmp/pids/get_dropbox.pid does not exist or cannot be read
W, [2011-07-13T16:55:00.464505 #32257]  WARN -- : [domain.com:get_dropboxes] Executing start command: /usr/bin/env RAILS_ENV=production bundle exec lib/daemons/get_dropbox_ctl start
I, [2011-07-13T16:55:01.602210 #32257]  INFO -- : [domain.com:get_dropboxes] Going from down => starting

当然有一种比这更简单的方法吗？

Answer 1

我不确定这是否是您要找的，但据我所知，您可以跳过守护程序文件并使用bluepill。只要指定了一个pid文件，就可以设置process.daemonize = true，它会为你创建一个守护进程。

Ruby守护进程和bluepill监控

1 个答案: