A personal summary of a pit where forwarding does not take effect after nginx configuration

I. Overview

The nginx configuration rules are still a bit complicated. Here I will only summarize a pit and a solution I encountered. The specific reason is not clear.

2. Pit that does not take effect after configuration

1. First, the sample url to be accessed is:

http://10.123.123.123:8080/b/c/getInfo
		 
http://10.123.123.123:8080/a/b/c/getMsg

The rules configured in nginx are:

        location /b/c/ {
          proxy_set_header Host $host;
          proxy_set_header Connection close;
          proxy_pass http://10.124.124.124:8089/api/other_Systems/;
         }

2. At this point, visit:

http://10.123.123.123:8080/b/c/getInfo

According to the configuration of nginx, it will be forwarded to:

http://10.124.124.124:8089/api/other_Systems/getInfo

This is no problem.

3. However, visit:

http://10.123.123.123:8080/a/b/c/getMsg

I thought it could also be forwarded to:

http://10.124.124.124:8089/api/other_Systems/getMsg

The result is not the case, the access is still http://10.123.123.123:8080/a/b/c/getMsgnot forwarded according to the rules.

3. Solutions

1.nginx needs to be configured like this:

        location /b/c/ {
          proxy_set_header Host $host;
          proxy_set_header Connection close;
          proxy_pass http://10.124.124.124:8089/api/other_Systems/;
         }
         
        location /a/b/c/ {
          proxy_set_header Host $host;
          proxy_set_header Connection close;
          proxy_pass http://10.124.124.124:8089/api/other_Systems/;
         }

In this way, we can put:

http://10.123.123.123:8080/a/b/c/getMsg

Forward to:

http://10.124.124.124:8089/api/other_Systems/getMsg

Four. Postscript

1. After modifying the nginx configuration file, to find the nginx startup file, use the command to restart: sudo ./nginx -s reload, don’t forget this.

2. Why it is not clear why only one forwarding rule can be configured, but two. The reason is not clear. Let me summarize the solution first.