服务器上监控tomcat，如果挂掉则重启

该脚本用于监控tomcat服务器是否可用，如果服务不可用则重启tomcat

略微修改后也可以用于其他服务的监控

monitor.sh 脚本如下

 #!/bin/sh

 # 定义要监控的页面地址
 WebUrl="http://xxxxxxx.com"
 GetPageInfo=/dev/null

 while [ "" = "" ]
 do

 TomcatServiceCode=$(curl -s -o $GetPageInfo -m 10 --connect-timeout 10 $WebUrl -w %{http_code})
 echo "`date "+%Y-%m-%d %H:%M:%S"` : TomcatServiceCode:"$TomcatServiceCode

 #如果返回不是http 200 ，说明tomcat已经挂断
 #需要杀掉进程，并重启tomcat
   if [ $TomcatServiceCode -eq 200 ];then
      echo "`date "+%Y-%m-%d %H:%M:%S"` :tomcat is okay."
   else
     ID=`ps -ef | grep tomcat | grep -v "grep" | awk '{print $2}'`
     echo $ID
     for id in $ID
     do
      kill -9 $id
      echo "`date "+%Y-%m-%d %H:%M:%S"` : killed $id"
     done
     echo "`date "+%Y-%m-%d %H:%M:%S"` : PID have been killed"
     echo "`date "+%Y-%m-%d %H:%M:%S"` : begin to restart the tomcat."
     service tomcat start
     echo "`date "+%Y-%m-%d %H:%M:%S"` : tomcat have been restarted."
   fi
 echo "check done."
 echo "`date "+%Y-%m-%d %H:%M:%S"` sleep 60s and wait next check.."
 sleep 60s
 done

启动脚本

nohup ./monitor.sh >/dev/null 2>&1