Zabbix监控案例(六)Nginx监控

Zabbix监控案例(六)Nginx监控

1. 编译安装nginx，监控nginx_stats页面，实现故障自治愈
2. 安装zabbix-agent（下面是apt安装，如果是编译安装需要注意路径）

编译安装nginx

1. 准备nginx编译包nginx-1.10.3.tar.gz，解压

tar xf nginx-1.10.3.tar.gz
cd nginx-1.10.3/

2. 编译安装
   安装环境

apt install gcc libpcre3-dev libpcre3 openssl libssl-dev zlib1g-dev make iproute2 ntpdate tcpdump telnet traceroute nfs-kernel-server nfs-common tree openssl  libssl-dev libpcre3 libpcre3-dev zlib1g-dev 

./configure --prefix=/usr/local/nginx \
--sbin-path=/usr/sbin/nginx \
--user=nginx \
--group=nginx \
--with-http_stub_status_module

make && make install

如果出错

src/core/ngx_murmurhash.c: In function ‘ngx_murmur_hash2’:
src/core/ngx_murmurhash.c:37:11: error: this statement may fall through [-Werror=implicit-fallthrough=]
         h ^= data[2] << 16;
         ~~^~~~~~~~~~~~~~~~
src/core/ngx_murmurhash.c:38:5: note: here
     case 2:
     ^~~~
src/core/ngx_murmurhash.c:39:11: error: this statement may fall through [-Werror=implicit-fallthrough=]
         h ^= data[1] << 8;
         ~~^~~~~~~~~~~~~~~
src/core/ngx_murmurhash.c:40:5: note: here
     case 1:
     ^~~~
cc1: all warnings being treated as errors
objs/Makefile:460: recipe for target 'objs/src/core/ngx_murmurhash.o' failed
make[1]: *** [objs/src/core/ngx_murmurhash.o] Error 1
make[1]: Leaving directory '/root/nginx-1.10.3'
Makefile:8: recipe for target 'build' failed
make: *** [build] Error 2

解决：objs/Makefile文件，将第三行的-Werror去掉就可以

3. 在server下加段

cd /usr/local/nginx/
vim conf/nginx.conf

location /nginx_status {
    stub_status on;
}

4. 启动

/usr/local/nginx/sbin/nginx

5. 测试nginx状态面
   

开启zabbix sudu权限

vim /etc/sudoers

zabbix ALL =(ALL) NOPASSWD: ALL

nginx脚本

cd /etc/zabbix/zabbix_agentd.conf.d/
vim nginx_check.sh

#!/bin/bash 

nginx_status_fun(){ #函数内容
	NGINX_PORT=$1 #端口，函数的第一个参数是脚本的第二个参数，即脚本的第二个参数是段端口号
	NGINX_COMMAND=$2 #命令，函数的第二个参数是脚本的第三个参数，即脚本的第三个参数是命令
	nginx_active(){ #获取nginx_active数量，以下相同，这是开启了nginx状态但是只能从本机看到
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Active' | awk '{print $NF}'
        }
	nginx_reading(){ #获取nginx_reading状态的数量
        /usr/bin/curl "http://127.0.0.1:"$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 
}

main(){ 
	case $1 in 
		nginx_status) 
			nginx_status_fun $2 $3;
			;;
		*) 
			echo $"Usage: $0 {nginx_status key}"
	esac
}

main $1 $2 $3

2. 测试下

bash nginx_check.sh nginx_status 80 accepts

3. 权限

chown zabbix.zabbix nginx_check.sh
chmod +x nginx_check.sh

配置agent

vim /etc/zabbix/zabbix_agentd.conf.d/check.conf

UserParameter=nginx_check[*],/etc/zabbix/zabbix_agentd.conf.d/nginx_check.sh "$1" "$2" "$3"

2. 重启服务

systemctl restart zabbix-agent

3. 在server端测试

# ./zabbix_get -s 192.168.99.23 -p 10050 -k "nginx_check[nginx_status,80,accepts]"
7

将nginx添加到zabbix监控

1. 创建模板
   

2. 添加监控项
   

3. 可以添加多个监控项
   

4. 添加图形
   

5. 添加触发器
   

6. 把模板添加到主机
   

7. 稍等一会，查看图形是否有数据

实现故障自治愈

修改配置文件支持运程命令

vim /etc/zabbix/zabbix_agentd.conf

EnableRemoteCommands=1
UnsafeUserParameters=1

重启服务

systemctl restart zabbix-agent

1. 先在nginx模板中创建一个监控项来监控80端口
   

2. 监控80端口
   

3. 检查下有没有数据
   

4. 创建触发器
   

5. 创建动作
   

6. 添加条件
   

7. 添加新的操作,传送命令

sudo su - root -c /usr/local/nginx/sbin/nginx

8. 将nginx服务停止

pkill nginx

9. 检查是否报警
   

10. 检查自治愈
    

11. 报警关闭