!/bin/sh

func:自动监控tomcat脚本并且执行重启操作TomcatMonitor
# author:reed
# date:20/08/2016

定义环境变量
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/u01/tomcatapp/jdk/bin
export CATALINA_HOME=/u01/tomcatapp
export JAVA_HOME=$CATALINA_HOME/jdk
export CLASSPATH=$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

DEFINE

获取tomcat进程ID
TomcatID=$(ps -ef |grep tomcat |grep -w ‘tomcatapp’|grep -v ‘grep’|awk ‘{print $2}’)

tomcat启动程序(这里注意tomcat实际安装的路径)
StartTomcat=$CATALINA_HOME/bin/startup.sh
TomcatCache=$CATALINA_HOME/work

定义要监控的页面地址
WebUrl=http://localhost:80

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 “———————————————“
}