• 在Ubuntu下添加自定义服务


    https://blog.csdn.net/xkjcf/article/details/78698232

    在Ubuntu系统中添加自定义服务需要遵从设计启动脚本的模式,下面就是如何编写启动脚本的示例程序。

    1、在/etc/init.d/ 下以管理员权限新建文件,在本例中为location_server.

    2、使用以下模板修改启动脚本的内容

    #!/bin/bash
    ### BEGIN INIT INFO
    #
    # Provides:  location_server
    # Required-Start:   $local_fs  $remote_fs
    # Required-Stop:    $local_fs  $remote_fs
    # Default-Start:    2 3 4 5
    # Default-Stop:     0 1 6
    # Short-Description:    initscript
    # Description:  This file should be used to construct scripts to be placed in /etc/init.d.
    #
    ### END INIT INFO
    
    ## Fill in name of program here.
    PROG="location_server"
    PROG_PATH="/opt/location_server" ## Not need, but sometimes helpful (if $PROG resides in /opt for example).
    PROG_ARGS="" 
    PID_PATH="/var/run/"
    
    start() {
        if [ -e "$PID_PATH/$PROG.pid" ]; then
            ## Program is running, exit with error.
            echo "Error! $PROG is currently running!" 1>&2
            exit 1
        else
            ## Change from /dev/null to something like /var/log/$PROG if you want to save output.
            $PROG_PATH/$PROG $PROG_ARGS 2>&1 >/var/log/$PROG &
        $pid=`ps ax | grep -i 'location_server' | sed 's/^([0-9]{1,}).*/1/g' | head -n 1`
    
            echo "$PROG started"
            echo $pid > "$PID_PATH/$PROG.pid"
        fi
    }
    
    stop() {
        echo "begin stop"
        if [ -e "$PID_PATH/$PROG.pid" ]; then
            ## Program is running, so stop it
        pid=`ps ax | grep -i 'location_server' | sed 's/^([0-9]{1,}).*/1/g' | head -n 1`
        kill $pid
    
            rm -f  "$PID_PATH/$PROG.pid"
            echo "$PROG stopped"
        else
            ## Program is not running, exit with error.
            echo "Error! $PROG not started!" 1>&2
            exit 1
        fi
    }
    
    ## Check to see if we are running as root first.
    ## Found at http://www.cyberciti.biz/tips/shell-root-user-check-script.html
    if [ "$(id -u)" != "0" ]; then
        echo "This script must be run as root" 1>&2
        exit 1
    fi
    
    case "$1" in
        start)
            start
            exit 0
        ;;
        stop)
            stop
            exit 0
        ;;
        reload|restart|force-reload)
            stop
            start
            exit 0
        ;;
        **)
            echo "Usage: $0 {start|stop|reload}" 1>&2
            exit 1
        ;;
    esac

    其中,PROG变量为所要运行的可执行程序的名称, PROG_PATH为可执行文件所在的目录,PROG_ARGS为执行程序的各个参数。 
    需要注意的是,在stop()函数中利用kill命令结束进程,有两种方法可以处理,一种是利用进程名称,如“location_server”查找相应的进程号,然后调用kill <进程号>结束进程,另一种方法是直接使用killall <进程名称>,但是在这种方法下,本启动脚本的名称不能和可执行文件的名称相同,不然的话,stop后会出现”Terminated“说明脚本也被kill掉。也可以在start()中将进程号存储在.pid文件中,然后在stop()中从文件中取得要结束的进程号,但是这样的话,还想获得的进程号会比实际进程号小2,现在还不知道是什么原因。

    3、添加删除服务

    添加: sudo update-rc.d 服务名 defaults
    删除:sudo update-rc.d -f 服务名 remove

    4、启动、关闭、重启服务

    /etc/init.d/服务名 start
    /etc/init.d/服务名 stop
    /etc/init.d/服务名 start

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  • 原文地址:https://www.cnblogs.com/shiningrise/p/8848110.html
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