Nginx routing forwarding and reverse proxy location configuration implementation

Three ways to configure Nginx

The first method directly replaces the location matching part

The second proxy_pass target address does not have a / by default, which means that only the proxy domain name is used, and the url and parameter parts will not change (the requested path is concatenated with the proxy_pass target domain name as the proxy URL)

The third type of proxy_pass target address adds a / after it, which means that the part of the path that successfully matches the location is cut off and then spliced ​​into the proxy_pass target address.

Location configuration

location [ = | ~ | ~* | ^~ ] uri {...}

The content in square brackets before uri is optional and is explained as follows:

• "=": used before the standard URI, requiring the request string to strictly match the URI, and stopping once the match is successful
• "~": used before the regular uri and is case-sensitive
• "~*": used before the regular uri, but not case-sensitive
• "^~": used before the standard URI, requiring Nginx to find the location with the highest match between the URI and the request string, and immediately use this location to process the request, instead of using the regular URI in the location block to match the request string.

example

For example, the following configuration demonstrates the third configuration scheme. When we visit http://44.179.118.54:80/shop/xxx

When accessing, Nginx will intercept /shop/ and then concatenate the following path to proxy_pass

Then what we actually visit is: http://44.179.118.54:8007/xxx this service

 #shop-service
 # Reverse proxy shop-service service location ^~ /shop/ {
     #proxy_redirect off;
     #proxy_connect_timeout 60;
     #proxy_read_timeout 60;
     #proxy_send_timeout 60;
     #proxy_buffer_size 4k;
     #proxy_buffers 4 32k;
     #proxy_busy_buffers_size 64k;
     #proxy_temp_file_write_size 64k;
     #proxy_max_temp_file_size 128m;
     proxy_pass http://44.179.118.54:8007/;
     #proxy_set_header X-Real-IP $remote_addr;

     #root /var/www/test/user/
     #index index.html
     #proxy_pass https://www.baidu.com;
 }

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