zabbix通过invoke调用监控服务可用性

1. 通过脚本判断线上服务是否可用
      telnet 127.0.0.1 端口    #线上调用的是使用的dubbo端口
      通过invoke 抓取返回的code值，脚本如下   #返回code：0则视为正常，返回其他值一概视为异常
    #!/bin/sh
(sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo({"orderNo":"6045430f040010d1658802", 
"channelCode":"0000"}) -p com.dafy.lou.loan.api.request.QueryRepayRequest";sleep 1;
echo " ";sleep 1;echo "exit")|telnet 127.0.0.1 50690 >/home/zabbix/loan/loan.txt

2. 通过zabbix监控其返回的值是否正常
    每5分钟执行一次上述脚本，抓取/home/zabbix/loan/loan.txt的code值
    */5 * * * * sh /home/zabbix/loan/loan.sh
    自定义监控项，zabbix安装路劲下新建一个以.conf结尾的文件，如下:
    /usr/local/zabbix_agent/etc/zabbix_agentd.conf.d/loan_service.conf
    UserParameter=loan, cat /home/zabbix/loan/loan.txt | grep '"code":0' | wc -l    #此处返回值为1则正常，返回0则告警，通过邮件等告警及远程执行命令
　　需要在zabbix_agentd.conf打开以下配置项
　　EnableRemoteCommands=1  #允许远程执行命令
 　 UnsafeUserParameters=0  #允许自定义监控项
　　Include=/usr/local/zabbix_agent/etc/zabbix_agentd.conf.d/*.conf   #此处可自定义路劲

3. 如果上述返回值为0，则执行以下脚本
    #!/bin/bash
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
   (sleep 1;echo " ";sleep 1;echo "invoke com.dafy.letou.loan.api.service.RepayService.queryRepayByOrderNo
({"orderNo":"1604596224358802", "channelCode":"0000"}) -p com.dafy.letou.loan.api.request.QueryRepayRequest";sleep 1;echo " ";sleep 1;echo "exit")|
telnet 127.0.0.1 50690 >>/home/zabbix/loan/error.txt
	sleep 3
code_err=`cat /home/zabbix/loan/error.txt | grep  '"code":0' | wc -l`
loan=`ps -ef | grep letou-loan | grep -v grep | awk '{print $2}'`
if [ $code_err -lt 5 ];then
	if [ ! $loan ];then
	/opt/server/letou/letou-loan/bin/start.sh PRO
	else
	kill -9 $loan 
	/opt/server/letou/letou-loan/bin/start.sh PRO
	fi
else
	echo "重启失败"
fi　

注意项:
    因为生产服务的用户不是用root启动的，需要从zabbix切换到普通用户执行脚本
    具体操作如下:
        1. visudo  新增  zabbix    ALL=(ALL)    ALL
        2. vim /etc/passwd   取消zabbix用户密码:即删除第二列的x
        3. 在zabbix用户使用如下命令执行:sudo su deploy -s /bin/sh /home/zabbix/loan/call.sh    sudo su - deploy -c 需要执行的命令(su与su -切换用户，su -会切换到用户家目录)
        4. zabbix添加监控项，触发器及动作就不演示了，博客有自定义监控项的详解