keeper.sh简单守护进程

#!/bin/sh

while true; do
        #启动一个循环，定时检查进程是否存在
        server=`ps aux | grep /opt/mongodb | grep -v grep`
        if [ ! "$server" ]; then
           echo `date "+%Y-%m-%d %H:%M:%S"` service restart
            #如果不存在就重新启动
            nohup bin/mongod --dbpath /opt/mongodb/db > mongodb.nohup.out&
            #启动后沉睡10s
            sleep 10
        fi
        #每次循环沉睡2s
        sleep 2
done