Monitoring Nginx

Collect and monitor the general performance Metrics of Nginx.

Protocol Use：Nginx

Need Enable ngx_http_stub_status_module And ngx_http_reqstat_module Module

If you want to monitor information in 'Nginx' with this monitoring type, you need to modify your nginx configure file for enable the module monitor.

Enable ngx_http_stub_status_module

1. Check if ngx_http_stub_status_module has been added

   nginx -V

   View whether it contains --with-http_stub_status_module, if not, you need to recompile and install Nginx.

2. Compile and install Nginx, add ngx_http_stub_status_module module

   Download Nginx and unzip it, execute the following command in the directory

   
   ./configure --prefix=/usr/local/nginx --with-http_stub_status_module
   
   make && make install

3. Modify Nginx configure file

   Modify the nginx.conf file and add the monitoring module exposed endpoint, as follows:

   # modify nginx.conf
   server {
           listen 80; # port
           server_name localhost;
           location /nginx-status {
                   stub_status     on;
                   access_log      on;
                   #allow 127.0.0.1; #only allow requests from localhost
                 #deny all;  #deny all other hosts
           }
   }

4. Reload Nginx

   
   nginx -s reload

5. Access http://localhost/nginx-status in the browser to view the Nginx monitoring status information.

Enable ngx_http_reqstat_module

1. Install ngx_http_reqstat_module

    # install `ngx_http_reqstat_module`
    wget https://github.com/zls0424/ngx_req_status/archive/master.zip -O ngx_req_status.zip
    
    unzip ngx_req_status.zip
    
    patch -p1 < ../ngx_req_status-master/write_filter.patch
    
    ./configure --prefix=/usr/local/nginx --add-module=/path/to/ngx_req_status-master
    
    make -j2
    
    make install

2. Modify Nginx configure file

   update nginx.conf file, add status module exposed endpoint, as follows:

   # modify nginx.conf
   http {
       req_status_zone server_name $server_name 256k;
       req_status_zone server_addr $server_addr 256k;
   
       req_status server_name server_addr;
   
       server {
           location /req-status {
               req_status_show on;
               #allow 127.0.0.1; #only allow requests from localhost
             #deny all;  #deny all other hosts
           }
       }
   }

3. Reload Nginx

   
   nginx -s reload

4. Access http://localhost/req-status in the browser to view the Nginx monitoring status information.

Refer Doc: https://github.com/zls0424/ngx_req_status

⚠️Attention: The endpoint path of the monitoring module is /nginx-status /req-status

Configuration parameter

Parameter name	Parameter help description
Monitoring Host	Monitored IPV4, IPV6 or domain name. Note⚠️Without protocol header (eg: https://, http://)
Monitoring name	Identify the name of this monitoring. The name needs to be unique
Port	Port provided by Nginx
Timeout	Allow collection response time
Collection interval	Interval time of monitor periodic data collection, unit: second, and the minimum interval that can be set is 30 seconds
Whether to detect	Whether to detect and check the availability of monitoring before adding monitoring. Adding and modifying operations will continue only after the detection is successful
Description remarks	For more information about identifying and describing this monitoring, users can note information here

Collection Metrics

Metrics Set：nginx_status

Metric name	Metric unit	Metric help description
accepts		Accepted connections
handled		Successfully processed connections
active		Currently active connections
dropped		Discarded connections
requests		Client requests
reading		Connections performing read operations
writing		Connections performing write operations
waiting		Waiting connections

Metrics Set：req_status

Metric name	Metric unit	Metric help description
zone_name		Group category
key		Group name
max_active		Maximum concurrent connections
max_bw	kb	Maximum bandwidth
traffic	kb	Total traffic
requests		Total requests
active		Current concurrent connections
bandwidth	kb	Current bandwidth