参考：http://www.linuxidc.com/Linux/2012-11/74003.htm


#!/bin/shmonitorlog=/opt/tomcat7/logs/monitor.logmonitor(){	tomcatid=$(ps -ef |grep tomcat |grep -w ‘tomcat7‘|grep -v ‘grep‘|awk ‘{print $2}‘)	tomcatup=/opt/tomcat7/bin/startup.sh	tomcatcache=/opt/tomcat7/work	tomcaturl=http://www.baidu.com/ok.jsp	echo "[info]$(date +‘%F %H:%M:%S‘)"	echo "[info]($tomcatid)"	if [ $tomcatid ]; then		http_code=$(curl -s -o /dev/null --connect-timeout 10 -m 20 $tomcaturl -w %{http_code})		if [ $http_code -eq 200 ]; then			echo "[info]tomcat ok"		else			echo "[error]tomcat died ($http_code)"			kill -9 $tomcatid			sleep 3			rm -rf $tomcatcache			$tomcatup		fi	else		echo "[error]tomcat none"		echo "[info]tomcat start"		rm -rf $tomcatcache		$tomcatup	fi}monitor>>$monitorlog