logo标签列表

如何使用Monit监控Delayed_Job

ruby-on-railsrubydelayed-jobmonitgod
74

网上有没有用Monit监控delayed_job的示例？我查到的所有内容都是使用God，但是我拒绝使用God，因为Ruby中长时间运行的进程通常很糟糕。 （God邮件列表中最新的帖子？God内存使用率稳步增长。）

更新： delayed_job现在附带了一个示例monit配置，基于这个问题。

不确定这个方法有多好，但是可以参考一下：http://www.jacobrothstein.com/entries/delayed-job-and-monit - Joe Pym
13个回答
1

对于Rails 3，您可能需要设置HOME环境变量才能使compass正常工作，以下配置适用于我：

check process delayed_job
  with pidfile /home/user/app/shared/pids/delayed_job.pid
  start program = "/bin/sh -c 'cd /home/user/app/current; HOME=/home/user RAILS_ENV=production script/delayed_job start'"
  stop program  = "/bin/sh -c 'cd /home/user/app/current; HOME=/home/user RAILS_ENV=production script/delayed_job stop'"
0

为了查看正在发生的情况，请以详细模式在前台运行monit：sudo monit -Iv

使用安装在用户“www1”和组“www1”下的rvm。

在文件/etc/monit/monitrc中：

#delayed_job
check process delayed_job with pidfile /home/www1/your_app/current/tmp/pids/delayed_job.pid
    start program "/bin/bash -c 'PATH=$PATH:/home/www1/.rvm/bin;source /home/www1/.rvm/scripts/rvm;cd /home/www1/your_app/current;RAILS_ENV=production bundle exec script/delayed_job start'" as uid www1 and gid www1
    stop program "/bin/bash -c 'PATH=$PATH:/home/www1/.rvm/bin;source /home/www1/.rvm/scripts/rvm;cd /home/www1/your_app/current;RAILS_ENV=production bundle exec script/delayed_job stop'" as uid www1 and gid www1
    if totalmem is greater than 200 MB for 2 cycles then alert
0
我遇到了一个问题，如果延迟作业在仍然锁定作业的情况下死亡，那么该作业将不会被释放。我编写了一个包装脚本来处理延迟作业，它将查看pid文件并释放任何来自已死工作者的作业。
这个脚本是为rubber/capistrano设计的。
roles/delayedjob/delayed_job_wrapper:
<% @path = '/etc/monit/monit.d/monit-delayedjob.conf' %>
<% workers = 4 %>
<% workers.times do |i| %>
<% PIDFILE = "/mnt/custora-#{RUBBER_ENV}/shared/pids/delayed_job.#{i}.pid" %>
<%= "check process delayed_job.#{i} with pidfile #{PIDFILE}"%>
group delayed_job-<%= RUBBER_ENV %>
<%= " start program = \"/bin/bash /mnt/#{rubber_env.app_name}-#{RUBBER_ENV}/current/script/delayed_job_wrapper #{i} start\"" %>
<%= " stop program = \"/bin/bash /mnt/#{rubber_env.app_name}-#{RUBBER_ENV}/current/script/delayed_job_wrapper #{i} stop\"" %>
<% end %>

角色/延迟工作/延迟工作包装器

#!/bin/bash
<%   @path = "/mnt/#{rubber_env.app_name}-#{RUBBER_ENV}/current/script/delayed_job_wrapper" %>

<%= "pid_file=/mnt/#{rubber_env.app_name}-#{RUBBER_ENV}/shared/pids/delayed_job.$1.pid" %>
if [ -e $pid_file ]; then
 pid=`cat $pid_file`
 if [ $2 == "start" ]; then
   ps -e | grep ^$pid
   if [ $? -eq 0 ]; then
     echo "already running $pid"
     exit
   fi
   rm $pid_file
 fi

locked_by="delayed_job.$1 host:`hostname` pid:$pid"

<%="   /usr/bin/mysql -e \"update delayed_jobs set locked_at = null, locked_by = null where locked_by='$locked_by'\" -u#{rubber_env.db_user} -h#{rubber_instances.for_role('db', 'primary' => true).first.full_name}  #{rubber_env.db_name} " %>

fi
<%= "cd /mnt/#{rubber_env.app_name}-#{RUBBER_ENV}/current" %>

. /etc/profile
<%= "RAILS_ENV=#{RUBBER_ENV} script/delayed_job -i $1 $2"%>
网页内容由stack overflow 提供, 点击上面的
可以查看英文原文，
原文链接