简单的linux看门狗脚本

watchdog.sh

 #!/bin/bash

 now=`date '+%Y-%m-%d %H:%M:%S'`
 baseDir=$(cd `dirname $0`; pwd)
 sleepTime=10

 #user=`whoami`
 user="root"
 if [ "$user" != "root" ]; then
     echo "this tool must run as *root*"
     exit
 fi

 if [ ! $# == 1 ]; then
     echo "Usage: $0 servicename"
     exit
 fi

 while [ 0 -lt 1 ]
 do
     now=`date '+%Y-%m-%d %H:%M:%S'`
     ret1=`ps -ef | grep $1 | grep -v grep | grep -v watchdog | wc -l`
     if [ $ret1 -eq 0 ]; then
         echo "$now $1 service not exists ,start $1 service now... "
         echo $ret1
         service $1 start
         echo "$now start $1 done ..... "
     else
         echo "$now $1 service exists , sleep $sleepTime seconds "
     fi
     sleep $sleepTime
 done

watchdog_start.sh

 #!/bin/sh
 ./watchdog_stop.sh

 servicename=zookeeper
 ./watchdog.sh $servicename>watchdog.log 2>&1 &

watchdog_stop.sh

 #!/bin/sh
 servicename=zookeeper

 pid=`ps aux | grep "watchdog.sh $servicename" | grep -v grep | awk '{print $2}'`
 if [[ -z $pid ]]; then
     echo not find "watchdog.sh $servicename" running
 else
     kill -9 $pid
 fi