shell脚本实现监控某个进程意外停止后拉起进程

要监护的进程启动脚本:实现脚本写入crontab定时任务

#!/usr/bin/env bash

# scheduled task at 22:00 everyday
script_path=`eval pwd`
user_name=`whoami`
echo "crontab_script_path:${script_path}"

sudo echo "* * * * * cd ${script_path} && sh xxx.sh > start_cron.log " >> /var/spool/cron/${user_name}

守护进程脚本:

#!/usr/bin/env bash jd=`ps -ef | grep xxx | grep -v grep | awk -F" " '{print $2}'` dt=`date "+%Y-%m-%d %H:%M:%s"` arr=($jd) len=${#arr[@]} if [ "$len" -lt 4 ] then echo "xxx process's num less than 4,kill it all (time: $dt)" >> xxx.logs sh stop.sh jd="" sleep 10s fi if [ "$jd" = "" ] then echo "xxx exe is restarting (time: $dt)" >> xxx.logs source ~/.bash_profile sh start.sh fi