nginx reverse proxy configuration removes prefixes

When using nginx as a reverse proxy, you can simply forward the request to the next service intact. Setting the proxy_pass request only replaces the domain name. If you want to access different services based on the different url suffixes, you need to do the following:

Method 1: add "/"

server {
    listen              8000;
    server_name         abc.com;
    access_log  "pipe:rollback /data/log/nginx/access.log interval=1d baknum=7 maxsize=1G"  main;
 
    location ^~/user/ {
        proxy_set_header Host $host;
        proxy_set_header  X-Real-IP        $remote_addr;
        proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_set_header X-NginX-Proxy true;
 
        proxy_pass http://user/;
    }
 
    location ^~/order/ {
        proxy_set_header Host $host;
        proxy_set_header  X-Real-IP        $remote_addr;
        proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_set_header X-NginX-Proxy true;
 
        proxy_pass http://order/;
    }
}

^~/user/ means the request with the matching prefix user, proxy_pass ending with /, then the path after /user/* will be concatenated directly to the end, that is, user will be removed.

Method 2: rewrite

upstream user {
 server localhost:8089 weight=5;
}
upstream order {
 server localhost:8090 weight=5;
}
 
server {
 listen  80;
 server_name abc.com;
 access_log "pipe:rollback /data/log/nginx/access.log interval=1d baknum=7 maxsize=1G" main;
 
 location ^~/user/ {
 proxy_set_header Host $host;
 proxy_set_header X-Real-IP $remote_addr;
 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 proxy_set_header X-NginX-Proxy true;
 
 rewrite ^/user/(.*)$ /$1 break;
 proxy_pass http://user;
 }
 
 location ^~/order/ {
 proxy_set_header Host $host;
 proxy_set_header X-Real-IP $remote_addr;
 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 proxy_set_header X-NginX-Proxy true;
 
 rewrite ^/order/(.*)$ /$1 break;
 proxy_pass http://order;
 }
}

proxy_pass ends without /, rewrite overrides url.

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