crontab定时任务——监听web服务运行状况

一个简单的脚本，用于监听web服务运行状况。

#!/bin/bash
export PATH=/usr/local/mysql/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

BASEDIR=/data/website/
LOGDIR=$BASEDIR/../logs
PROG='main.py'
ps aux | grep "python $PROG" | grep -v grep
if [ $? -eq 0 ];then
    echo "Ok: $PROG is running" 
else
    echo "Error: $PROG is not running !"
    echo "##### Start $PROG #####"
    cd $BASEDIR
    python $PROG 1>>$LOGDIR/$PROG.log 2>&1 &
    echo "##### Completed #####"
fi

配置crontab定时任务

#终端输入命令
crontab -e
#添加定时任务，每两分钟执行一次
*/2 * * * * /data/shell/check.sh 1>/dev/null 2>&1

重启服务

sudo /etc/init.d/cron restart