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

posted @ 2018-04-15 16:36  shiningrise  阅读(4251)  评论(0编辑  收藏  举报