How to add http_stub_status_module module to nginx

1. stub_status function description

##–with-http_stub_status_moduleNginx client status

Compilation option	Function

2. Check the existing nginx compilation parameters

./nginx -V
# 如果没有我们需要的模块，例如本次试验添加的 –with-http_stub_status_module ，那么则需要重新编译安装一下

3 .Reconfigure configure using parameters, and add --with-http_stub_status_module

on the original basis. The configure file is a file in the installation package directory. For details, please refer to Centos 7 Installing nginx

./configure --prefix=/usr/local/nginx --with-http_realip_module --with-http_ssl_module --with-pcre --with-stream --with-http_stub_status_module

4 .Back up the original nginx file

cp /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak

5. Compile

make
# 这里是需要 make 编译，不用 make install

6. Replace the nginx binary file

# 找到 nginx 安装包目录 /root/nginx-1.10.1/objs ，将 nginx 文件复制到原本的 /usr/local/nginx/sbin/nginx
cp /root/nginx-1.10.1/objs/nginx /usr/local/nginx/sbin/

7. Restart nginx, check the compilation parameters

./nginx -s reload
./nginx -V

8. Refer to the official website

8.1 Modify the configuration file

File directory:/usr/local/nginx/conf

# 在文件中添加新的 location
location /nginx_status {
	stub_status;
}

# 解释说明：
	nginx_status	这是自定义命名的，访问的时候添加这个字段访问
	stub_status;	这个是固定参数

8.2 Browser access

http://192.168.169.131/nginx_status
# 访问内容结果如下图

# 解释说明：
1）Active connections-活跃连接数
        The current number of active client connections including Waiting connections.

（2）accepts-已接受的客户端连接总数
        The total number of accepted client connections.

（3）handled-已处理的连接总数
        The total number of handled connections. Generally, the parameter value is the same as acceptsunless some resource limits have been reached (for example, the worker_connections limit).

（4）requests-客户端连接总数
        The total number of client requests.

（5）Reading-读取请求头的当前连接数
        The current number of connections where nginx is reading the request header.

（6）Writing-将响应写回客户端的当前连接数
        The current number of connections where nginx is writing the response back to the client.

（7）Waiting-等待请求的当前空闲客户端连接数
        The current number of idle client connections waiting for a request.

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