How to configure Nginx to detect service status

1. Check whether the check status module is installed;

[root@localhost ~]# nginx -v
nginx version: nginx/1.12.2
built by gcc 4.8.5 20150623 (red hat 4.8.5-36) (gcc)
configure arguments: --prefix=/usr/local/nginx --with-http_sub_module

2. If it is not installed, recompile and install;

ø Check Status module; --with-http_stub_status_module

[root@localhost ~]# cd /usr/local/src/nginx-1.12.2/       
[root@localhost ~]# ./configure --prefix=/usr/local/nginx --with-http_stub_status_module
[root@localhost ~]# make && make install

3. Edit nginx configuration file;

[root@localhost ~]# vim /usr/local/nginx/conf/nginx.conf
server {
  listen 80;
  server_name localhost;
  #access_log logs/host.access.log main;
 
  location /nginx_status {
  stub_status on;
  access_log off;
   #allow 127.0.0.1; ##可对该页面的访问者进行过滤
   #deny all;
   }
  }
[root@localhost ~]# nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@localhost ~]# nginx -s reload

4. Test syntax;

[root@localhost ~]# curl http://192.168.10.110:80/nginx_status
active connections: 1
server accepts handled requests
 1 1 1
reading: 0 writing: 1 waiting: 0

5. Detailed explanation of the output content;

First line active connections: 1 ——The number of active connections, including waiting Number of clients 0

The second line server accepts handled requests——A total of 1 connection was processed, 1 handshake was successfully created, and a total of 1 request was processed

The third line reading - reading the number of connections from the client, writing - the number of response data to the client, waiting - when keep-alive is turned on, this value is equal to active - (reading writing), which means nginx has After processing the resident connection that is waiting for the next request command.

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