MySQL,nginx,tomcat检查进程是否存在以及启动

vi mysql_mon.sh
#!/bin/bash
if [ netstat -tlunp|grep mysql|wc -l -gt 0 ] #过滤进程名为mysql,转成数字
then
echo "MySQL is Running."
else
echo "MySQL is Stopped."
/etc/init.d/mysql start
fi

vi nginx_mon.sh
#!/bin/bash
if [ netstat -tlunp|grep nginx|wc -l -gt 0 ] #过滤进程名为nginx,转成数字
then
echo "Nginx is Running."
else
echo "Nginx is Stopped."
/etc/init.d/nginx start
fi

vi tomcat_mon.sh
#!/bin/sh

func:自动监控tomcat脚本并且执行重启操作

获取tomcat进程ID

TomcatID=$(ps -ef |grep tomcat |grep -w 'tomcat'|grep -v 'grep'|awk '{print $2}')

tomcat启动程序(这里注意tomcat实际安装的路径)

StartTomcat=/usr/local/tomcat/bin/startup.sh
TomcatCache=/usr/local/tomcat/work

定义要监控的页面地址

WebUrl=http://192.168.254.131:8080/

日志输出

GetPageInfo=/tmp/TomcatMonitor.Info
TomcatMonitorLog=/tmp/TomcatMonitor.log
Monitor()
{
echo "[info]开始监控tomcat...[$(date +'%F %H:%M:%S')]"
if [[ $TomcatID ]];then # 这里判断TOMCAT进程是否存在
echo "[info]当前tomcat进程ID为:$TomcatID,继续检测页面..."

检测是否启动成功(成功的话页面会返回状态"200")

TomcatServiceCode=$(curl -s -o $GetPageInfo -m 10 --connect-timeout 10 $WebUrl -w %{http_code})  
if [ $TomcatServiceCode -eq 200 ];then  
    echo "[info]页面返回码为$TomcatServiceCode,tomcat启动成功,测试页面正常......"  
else  
    echo "[error]tomcat页面出错,请注意......状态码为$TomcatServiceCode,错误日志已输出到$GetPageInfo"  
    echo "[error]页面访问出错,开始重启tomcat" 
kill -9 $TomcatID  # 杀掉原tomcat进程  
    sleep 3  
    rm -rf $TomcatCache # 清理tomcat缓存  
    $StartTomcat  
fi

else echo "[error]tomcat进程不存在!tomcat开始自动重启..." echo "[info]$StartTomcat,请稍候......" rm -rf $TomcatCache $StartTomcat fi echo "------------------------------" } Monitor>>$TomcatMonitorLog

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