No access to buckets and policies in console when using reverse proxy subpath

[beatstream69]

No access to buckets and policies (and possibly something else?) in web console when using reverse proxy subpath

Expected Behavior

Web console try to access /subpath/api/v1/buckets and all is good

Current Behavior

Web console try to access /api/v1/buckets which is not working

Possible Solution

Revert to RELEASE.2023-03-24T21-41-23Z

Steps to Reproduce (for bugs)

set MINIO_BROWSER_REDIRECT_URL=https://example.com/subpath
start minio
try to open https://example.com/subpath/buckets
or https://example.com/subpath/policies

Regression

Yes, worked with docker image RELEASE.2023-03-24T21-41-23Z

Your Environment

• Version used: RELEASE.2023-04-07T05-28-58Z (go1.20.3 linux/amd64)
• Server setup and configuration: docker container, nginx reverse proxy
  Nginx relevant config:

server {
        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;
        server_name example.com;
        listen 443 ssl;
        client_max_body_size 10G;
        proxy_read_timeout 3600;
        proxy_connect_timeout 3600;
        proxy_send_timeout 3600;
        proxy_cache off;
...
        location /subpath {
                rewrite   ^/subpath/(.*) /$1 break;
                proxy_set_header Host $http_host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Forwarded-Proto $scheme;
                proxy_set_header X-NginX-Proxy true;
                real_ip_header X-Real-IP;
                proxy_connect_timeout 300;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection "upgrade";
                chunked_transfer_encoding off;
                proxy_pass http://192.168.0.201:9012;
        }
}
server {
        server_name example.com;
        listen 9011 ssl;
        ...<ssl config>...
        ignore_invalid_headers off;
        client_max_body_size 10G;
        proxy_buffering off;
        proxy_request_buffering off;
        location / {
                proxy_set_header Host $http_host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Forwarded-Proto $scheme;
                proxy_connect_timeout 300;
                proxy_http_version 1.1;
                proxy_set_header Connection "";
                chunked_transfer_encoding off;
                proxy_pass http://192.168.0.201:9011;
        }
}

[avnav0]

same issue:
i have a similar problem. i'm using a subpath of /minio, the console works and the session request returns 200.

Request URL: http://10.235.77.22/minio/api/v1/session
Request Method: GET
Status Code: 200 OK
Remote Address: 10.235.77.22:80
Referrer Policy: strict-origin-when-cross-origin

but when you try to use certain pages like buckets, you get:

Request URL: http://10.235.77.22/api/v1/buckets
Request Method: GET
Status Code: 404 Not Found
Remote Address: 10.235.77.22:80
Referrer Policy: no-referrer

[avnav0]

p.s. THANK YOU FOR THE ALTERNATIVE SOLUTION!!!!!! @beatstream69

[vmire]

Duplicate of #2774