shell 监控java后台进程

项目中需要监控java后台服务是否运行，如果后台停止运行，则重启。具体步骤如下

1、编写shell脚本check.sh

#!/bin/bash

. ~/.bash_profile

===========================================
#核查日志文件名中关于时间格式
LOG_DATEFMT=$(date +%Y%m%d%H)
USERNAME=wlsr

#重启时间
chk_time=`date +%Y%m%d%H%M%S`

===========================================

function checkProcess() {
        echo "---------------------------------------------------------------------------------------"
        echo "                                 $chk_time $3程序核查                            "
        echo "---------------------------------------------------------------------------------------"
        if [ $# -ne 3 ]
        then
                echo "Error: checkProcess() 参数非法"  
        else

        ps -f |grep -w dubbo-service | grep -v grep | wc -l
                processCount=$(ps -f -u $USERNAME |grep -w "$1" | grep -v grep | wc -l)
                if [ $processCount -eq 0 ]
                then
                        echo "Error：$1 进程不存在或进程数错误，进程数 $processCount"
                        cd $2
                        $3
                        echo "Error: $chk_time: restart $1"
                else
                        echo "Info：$chk_time: $1 进程存在，进程数 $processCount "
                fi
        fi
}



checkProcess "dubbo-service"  "/home/wxbsusht/dubbo-service" "./run.sh  start"
checkProcess "dubbo-consume"  "/home/wxbsusht/dubbo-consume" "./run.sh  start"

exit 0

2、将shell脚本添加到crontab中

crontab -e 加入如下内容

1-59 * * * * /home/wxbsusht/check-pid-shell/check.sh >/dev/null

3、将后台服务停止后，观察进程是否重启