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  • Add custom daemon on Linux System

    Ubuntu add custom service(daemon)

    Task

    需要在系统启动的时候自动启动一个服务(后台程序),在系统关闭的时候关闭服务。
    比如在部署某个应用之前,需要将某个任务设置成后台程序(daemon),而这些* 任务 *可以是Liunx command, 或者自己写的脚本。
    比如在部署我的Django应用之前,需要启动MQ服务,一种可能的方式是:需要执行python manage.py runMQServer

    Why dont use /etc/init.d

    /etc/init.d是陈旧的方式,目前已经被淘汰,取而代之的是upstart
    使用upstart方式添加后台程序配置更容易

    /etc/init/run_mq.conf

    以task中的需求为例,创建daemon的配置文件run_mq.conf:

    # TMS MQ Service
    
    description "TMS message queue server"
    author "xxx <xxx@xxx.com>"
    
    
    #the job is started automatically when the machine is first started (without writable filesystems or networking). 
    start on startup
    
    #the job is stoped automatically when the machine is shut down
    stop on shutdown
    
    #a job that exits quietly transitions into the stop/waiting state, no matter how it exited.
    respawn
    
    #respawn the job up to 2 times within a 5 second period.
    #If the job exceeds these values, it will be stopped and
    #marked as failed.
    respawn limit 2 5
    
    #controls where a job's output goes, and where its input comes from
    console ouput
    
    #additional shell code can be given to be run before the binary or script,it is intended for preparing the environment 
    pre-start script
        #prepare environment
    end script
    
    script
        if [ -f /home/tms/TMS/tmsApp/management/commands/runMSGServer.py ]; then
            python /home/tms/TMS/manage.py runMSGServer
        fi
    end script
    
    #additional shell code can be given to be run after the binary or script,it is intended for cleaning up afterwards
    post-stop script
        #clean up or else
    	logger "TMS message queue server started..."
    end script
    

    references

    How to correctly add a custom daemon to init.d?
    Upstart getting started

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  • 原文地址:https://www.cnblogs.com/zeweiwu/p/5433816.html
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