Web服务自动监控shell
我们在线上跑的服务,不知道为什么最近有几回运行的进程莫名其妙的就没有了,就特意写了这个监控脚本,让其自动扫描服务,把访问不正常的服务,自动启动或重启服务,并且导出当时的线程使用情况,方便定位问题。
步骤:
1.修改web服务名称和端口
monitorTcp.sh
2.修改扫描时间
monitorServer.sh
3.启动守候进程
/usr/bin/nohup/bin/sh/home/Gzh/shell/monitorServer.sh2>&1>/dev/null&
monitorServer.sh
#!/bin/sh ########################################################### #desc:后台守候检查服务是否正常 #author:gaozhonghui #mail:[email protected] #date:20121210 ########################################################### while true do /bin/sh /home/Gzh/shell/monitorTcp.sh > /dev/null 2>&1 sleep 10 done
monitorTcp.sh
#!/bin/sh ##################################################### #desc:扫描后台服务器的应用服务器,若不能正常访问则重启 #author:gaozhonghui #mail:[email protected] #date:20121127 ####################################################### year=`date -d "today" +"%Y"` monthday=`date -d "today" +"%m"` date=$(date -d "today" +"%Y%m%d") #被监控服务器、端口列表 #str = web服务文件夹:端口号 server_all_list=( 'www.test2.com:9090' 'www.test.com:8090' ) #应用服务器基路径 serverBasePath="/web/webserver/jboss/" #日志路径 logBasePath="/web/webserver/logs/$year/$monthday/" #获得监控服务PID function_getPID(){ local PID=`ps -ef|grep $1|grep java |awk '{print $2}'` echo $PID } #dump 线程详细信息方便定位问题 function_jstackinfo(){ PID=`function_getPID $1` if [ x$PID != x"" ] ;then if [ ! -d ${logBasePath} ];then mkdir -p ${logBasePath} fi jstack -l ${PID} >> ${logBasePath}"jstack_$1_${date}.log" fi } #关闭应用服务 function_shutdown(){ local shutdownSh=${serverBasePath}$1"/bin/shutdown.sh" if [ -f $shutdownSh ];then local PID=`function_getPID $1` if [ x$PID != x"" ] ;then sh $shutdownSh > /dev/null 2>&1 sleep 2 fi local PID2=`function_getPID $1` if [ x$PID2 != x"" ];then kill -9 $PID2 fi fi } #启动应用服务 function_startup(){ local startupSh=${serverBasePath}$1"/bin/startup.sh" if [ -f $shutdownSh ];then sh $startupSh > /dev/null 2>&1 fi } #重启应用服务 function_restart(){ function_shutdown $1 sleep 5 function_startup $1 } #扫描监控服务 for server in ${server_all_list[@]}; do server_ip=127.0.0.1 server_name=$( echo ${server} | awk -F ':' '{print $1}') server_port=$( echo ${server} | awk -F ':' '{print $2}') #status: 0,http down 1,http ok 2,http down but ping ok if nc -vv -z -w 2 $server_ip $server_port > /dev/null 2>&1;then status=1 else if nc -vv -z -w 3 $server_ip $server_port > /dev/null 2>&1;then status=1 else if ping -c 1 $server_ip > /dev/null 2>&1;then status=2 else status=0 fi fi fi if [ x$status != x"1" ];then PID=`function_getPID ${server_name}` if [ x$PID != x ];then function_jstackinfo ${server_name} function_restart ${server_name} else function_startup ${server_name} fi fi done
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