Nginx rewrites correctly for one but not the other

Askirkela

12/10/22, 10:26 AM

Basically, I am trying to use the proxy_pass directive to call a remote API.

So far, this is what I got:

server {
  location /a {
    proxy_pass https://a.com;
    rewrite ^/a(.*)$ $1 break; # no trailing slash, defined in application code
  }
  location /b {
    proxy_pass https://b.com;
    rewrite ^/b(.*)$ $1 break; # no trailing slash, defined in application code
  }
  location / {
    # Rest of configuration
  }
}

I am stuck with the fact that location /a works fine but location /b doesn't for some reason (HTTP/404).

I tried using a trailing slash for location /b this way

location /b/ {
  proxy_pass https://b.com/;
  rewrite ^/b/(.*)$ $1 break;
}

but this doesn't work either.

Any help is very welcome.

1 + 0

rewrite

nginx

proxypass

Score:0

Server

Askirkela

12/10/22, 1:50 PM

I found the answer to my particular issue.

The two API servers are not configured the same way and I had to tweek the nginx config a bit.

Server b.com needed a proxy_set_header Host $host directive and no rewrite directive
Server a.com needed the rewrite directive but not the proxy_set_header Host $host

This leaves me with the following (working for me) config:

server {
    location /a {
        proxy_pass  https://a.com;
        rewrite ^/a(.*)$ $1 break;
    }
    location /b {
        proxy_set_header Host $host;
        proxy_pass  https://b.com;
    }
}

0 + 0

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Nginx rewrites correctly for one but not the other

TH: Nginx เขียนใหม่อย่างถูกต้องสำหรับอันหนึ่ง แต่ไม่ใช่อันอื่น

RO: Nginx rescrie corect pentru unul, dar nu pentru celălalt

RU: Nginx переписывает правильно для одного, но не для другого

VI: Nginx viết lại chính xác cho cái này nhưng không phải cái kia

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