2014年写的Zabbix监控插件，主要监控TCP的11种状态、Nginx状态、Redis和Memcached状态。
 
监控模板请查看附件。直接导入到Zabbix中即可。
 
Nginx监控状态配置默认使用127.0.0.1获取。
 
Nginx监控配置：
 
1.为Nginx增加状态配置文件。

[root@linux-node2 ~]# yum install -y nginx

[root@linux-node2 ~]# vim /etc/nginx/conf.d/nginx-status.conf

server {

       server_name 127.0.0.1;

       location /nginx_status {

                stub_status on;

                access_log off;

                allow 127.0.0.1;

                deny all;

                }

}

2.测试Nginx配置并启动

[root@linux-node2 ~]# nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: configuration file /etc/nginx/nginx.conf test is successful

[root@linux-node2 ~]# systemctl start nginx

3.测试Nginx状态接口

[root@linux-node2 ~]# curl http://127.0.0.1/nginx_status

Active connections: 1 

server accepts handled requests

 7 7 7 

Reading: 0 Writing: 1 Waiting: 0

 
  

#!/bin/bash

############################################################

# $Name:         zabbix_linux_plugins.sh

# $Version:      v1.0

# $Function:     zabbix plugins

# $Author:       Jason Zhao

# $organization: www.unixhot.com

# $Create Date:  2014-08-10

# $Description:  Monitor Linux Service Status

############################################################

tcp_status_fun(){

	TCP_STAT=$1

	#netstat -n | awk '/^tcp/ {  state[$NF]} END {for(key in state) print key,state[key]}' > /tmp/netstat.tmp

	ss -ant | awk 'NR>1 {  s[$1]} END {for(k in s) print k,s[k]}' > /tmp/netstat.tmp

	TCP_STAT_VALUE=$(grep "$TCP_STAT" /tmp/netstat.tmp | cut -d ' ' -f2)

	if [ -z $TCP_STAT_VALUE ];then

		TCP_STAT_VALUE=0

	fi

	echo $TCP_STAT_VALUE

}



nginx_status_fun(){

	NGINX_PORT=$1

	NGINX_COMMAND=$2

	nginx_active(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Active' | awk '{print $NF}'

        }

	nginx_reading(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Reading' | awk '{print $2}'

       }

	nginx_writing(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Writing' | awk '{print $4}'

       }

	nginx_waiting(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Waiting' | awk '{print $6}'

       }

	nginx_accepts(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| awk NR==3 | awk '{print $1}'

       }

	nginx_handled(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| awk NR==3 | awk '{print $2}'

       }

	nginx_requests(){

        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| awk NR==3 | awk '{print $3}'

       }

  	case $NGINX_COMMAND in

		active)

			nginx_active;

			;;

		reading)

			nginx_reading;

			;;

		writing)

			nginx_writing;

			;;

		waiting)

			nginx_waiting;

			;;

		accepts)

			nginx_accepts;

			;;

		handled)

			nginx_handled;

			;;

		requests)

			nginx_requests;

		esac 

}



memcached_status_fun(){

	M_PORT=$1

	M_COMMAND=$2

	echo -e "stats\nquit" | nc 127.0.0.1 "$M_PORT" | grep "STAT $M_COMMAND " | awk '{print $3}'

}



redis_status_fun(){

	R_PORT=$1

	R_COMMAND=$2

	(echo -en "INFO \r\n";sleep 1;) | nc 127.0.0.1 "$R_PORT" > /tmp/redis_"$R_PORT".tmp

	REDIS_STAT_VALUE=$(grep ""$R_COMMAND":" /tmp/redis_"$R_PORT".tmp | cut -d ':' -f2)

 	echo $REDIS_STAT_VALUE	

}



main(){

	case $1 in

		tcp_status)

			tcp_status_fun $2;

			;;

		nginx_status)

			nginx_status_fun $2 $3;

			;;

		memcached_status)

			memcached_status_fun $2 $3;

			;;

		redis_status)

			redis_status_fun $2 $3;

			;;

		*)

			echo $"Usage: $0 {tcp_status key|memcached_status key|redis_status key|nginx_status key}"

	esac

}



main $1 $2 $3

 
使用方法：

[root@linux-node2 ~]# ./zabbix_linux_plugin.sh 

Usage: ./zabbix_linux_plugin.sh {tcp_status key|memcached_status key|redis_status key|nginx_status key}

 
获取TCP监控状态

[root@linux-node2 ~]# ./zabbix_linux_plugin.sh tcp_status LISTEN

14

 

 如果需要使用Zabbix Java Gateway监控JMX，需要先打开JMX监控接口。
 
1.Tomcat部署可以在http://tomcat.apache.org/官网上下载对应的版本。这里在linux-node2这个实验节点上，使用Tomcat8做实验。 
 
安装JDK1.8和Tomcat-8.5.20 

[root@linux-node2 ~]# yum install -y java-1.8.0

[root@linux-node2 ~]# cd /usr/local/src

# wget http://mirrors.hust.edu.cn/apache/tomcat/tomcat-8/v8.5.20/bin/apache-tomcat-8.5.20.tar.gz

[root@linux-node2 src]# tar zxf apache-tomcat-8.5.20.tar.gz 

[root@linux-node2 src]# mv apache-tomcat-8.5.20 /usr/local/

[root@linux-node2 src]# ln -s /usr/local/apache-tomcat-8.5.20/ /usr/local/tomcat

2.Tomcat开启JMX监控
JMX监控设置有三种类型：

• 无验证的JMX监控
• 用户名密码认证
• SSL加密

 

[root@linux-node2 ~]# vim /usr/local/tomcat/bin/catalina.sh

CATALINA_OPTS="$CATALINA_OPTS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=8888 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Djava.rmi.server.hostname=192.168.56.12"

参数行中的com.sun.management.jmxremote.port参数是tomcat JMX监听的端口，可以随意配置，但是不可已经被占用；java.rmi.server.hostname参数的IP地址为远程Linux服务器的IP地址。

 
3.启动Tomcat

[root@linux-node2 ~]# /usr/local/tomcat/bin/startup.sh 

Using CATALINA_BASE:   /usr/local/tomcat

Using CATALINA_HOME:   /usr/local/tomcat

Using CATALINA_TMPDIR: /usr/local/tomcat/temp

Using JRE_HOME:        /usr

Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

Tomcat started.

[root@linux-node2 ~]# netstat -ntlp | grep 8888

tcp6       0      0 :::8888                 :::*                    LISTEN      6154/java  

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