zabbix监控nginx状态

配置zabbix监控nginx状态。

首先搭建一套LNMP环境，部署discuz论坛用于后面监控案例。
搭建一个测试用论坛**

一、搭建Discuz论坛

1、配置epel源

[root@node4 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

2、安装centos-release-scl源

[root@node4 ~]# yum install centos-release-scl -y

3、部署lnmp环境

[root@node4 ~]# yum -y install nginx mariadb-server rh-php72-php rh-php72-phpcli rh-php72-php-common \
rh-php72-php-fpm rh-php72-php-gd rh-php72-php-mbstring rh-php72-php-pdo \
rh-php72-php-xml rh-php72-php-mysqlnd rh-redis5 sclo-php72-php-pecl-redis5

4、配置php-fpm

[root@node4 ~]# vim /etc/opt/rh/rh-php72/php-fpm.d/www.conf
; Unix user/group of processes
; Note: The user is mandatory. If the group is not set, the default user's group
;       will be used.
; RPM: apache user chosen to provide access to the same directories as httpd

;user = apache
user = nginx

; RPM: Keep a group allowed to write in log dir.

;group = apache
group = nginx

5、准备论坛代码

[root@node4 ~]# mkdir /code/discuz -p

论坛代码可到官网下载：https://www.discuz.net/forum-10-1.html
上传下载的Discuz_X3.3_SC_UTF8.zip
[root@node4 ~]# rz -E
rz waiting to receive.
[root@node4 ~]# ls
anaconda-ks.cfg  Discuz_X3.3_SC_UTF8.zip

解压到创建的指定目录下
[root@node4 ~]# unzip -q Discuz_X3.3_SC_UTF8.zip -d /code/discuz/
[root@node4 ~]# cd /code/discuz
[root@node4 discuz]# ll
total 4
drwxr-xr-x  2 root root  102 Jul 27  2017 readme
drwxr-xr-x 12 root root 4096 Jul 27  2017 upload
drwxr-xr-x  4 root root   72 Jul 27  2017 utility

修改所属组
[root@node4 discuz]# chown -R nginx:nginx /code/discuz/

6、配置论坛首页

[root@node4 ~]# vim /etc/nginx/conf.d/discuz.conf
server {
        listen 80;
        server_name discuz.kongd.com;
        root /code/discuz/upload;
        location / {
        index index.php index.html;
        }
        location ~ \.php$ {
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
        }
}

7、启动服务

先停止之前的apache(没有则不用此操作)：# systemctl stop httpd

[root@node4 ~]# systemctl enable nginx.service mariadb.service rh-php72-php-fpm.service rh-redis5-redis.service --now
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/rh-php72-php-fpm.service to /usr/lib/systemd/system/rh-php72-php-fpm.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/rh-redis5-redis.service to /usr/lib/systemd/system/rh-redis5-redis.service.

8、配置论坛用数据库

创建数据库并授权
[root@node4 ~]# mysql -e "create database discuz character set utf8;"
[root@node4 ~]# mysql -e "grant all on discuz.* to discuz@localhost identified by '123456';"

配置hosts解析，在线完成论坛安装

C:\Windows\System32\drivers\etc\hosts
添加：192.168.43.114 discuz.kongd.com

9、登录后台，配置redis加速

登录>管理中心>全局>性能优化>内存优化

修改config_global.php文件

[root@node4 ~]# vim /code/discuz/upload/config/config_global.php
// --------------------------  CONFIG MEMORY  --------------------------- //
$_config['memory']['prefix'] = 'QOatDb_';
$_config['memory']['redis']['server'] = '127.0.0.1';//redis服务地址
$_config['memory']['redis']['port'] = 6379;
$_config['memory']['redis']['pconnect'] = 1;
$_config['memory']['redis']['timeout'] = '0';
$_config['memory']['redis']['requirepass'] = '';//认证密码，没配置不填
$_config['memory']['redis']['serializer'] = 1;
$_config['memory']['memcache']['server'] = '';
$_config['memory']['memcache']['port'] = 11211;
$_config['memory']['memcache']['pconnect'] = 1;

刷新查看

二、Nginx监控原理

Nginx提供了status模块监控内部的运行状态，如需查看当前Nginx是否支持status模块，则可使用nginx -V命令查看是否输出–with_stub_status_modules。 RPM包安装默认支持，为 --withhttp_stub_status_module 。

三、Nginx状态数据配置的开启

开启Nginx状态数据配置，需要在nginx.conf中添加一个虚拟主机，内容如下

[root@node4 ~]# cat /etc/nginx/conf.d/monitor.conf
server {
	listen 127.0.0.1:80;
	server_name 127.0.0.1;
	location /nginxstatus {
	stub_status on;#开启状态页
	access_log off;#不记录访问日志
	allow 127.0.0.1; #只允许自己访问，这里是允许的IP地址
	deny all;#其他全部拒绝
}
}
-----------------------------------------------------------------------------------------------------------------------

检查配置文件
[root@node4 ~]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
-----------------------------------------------------------------------------------------------------------------------
加载配置
[root@node4 ~]# nginx -s reload
-----------------------------------------------------------------------------------------------------------------------
访问测试
[root@node4 ~]# curl http://127.0.0.1/nginxstatus
Active connections: 1 
server accepts handled requests
 19 19 112 
Reading: 0 Writing: 1 Waiting: 0 

各字段的含义：
Active connections：当前活跃的客户端连接数，包括Waiting连接数；
accepts：接受的客户端连接总数；
handled：已处理的连接总数。通常与“accepts”的值相同，除非达到某些资源限制，
如“worker_connections”；
requests：客户端请求总数，一个客户端连接可能包含多个请求；
Reading：Nginx正在读取请求标头的当前连接数；
Writing：Nginx正在将响应写回给客户端的当前连接数；
Waiting：当前等待请求的空闲连接数。

四、使用zabbix模板监控

zabbix 5.0 默认提供了监控nginx模板，直接套用模板监控即可。

zabbix模板 https://www.zabbix.com/integrations?cat=official_templates

1.修改模板宏变量

配置>主机>node4>模板>添加

注意：需取消原有连接，再添加上方模板

查看状态

修改宏变量


注意：node4需配置zabbix-agent2
配置方法——查看目录“客户端”https://blog.csdn.net/zhuangjiu/article/details/126033403?spm=1001.2014.3001.5501

完成