Using `MINIO_BROWSER_REDIRECT_URL` without a `/` suffix results in a white page

[hashworks]

I'm using nginx as a reverse proxy for Minio, as specified in the docs:

location /ui {
   rewrite ^/ui/(.*) /$1 break;
   ...
}

When I set MINIO_BROWSER_REDIRECT_URL="https://minio.example.net/ui" the redirect from https://minio.example.net to https://minio.example.net/ui works, but console then displays an empty white page.

To fix this, one has to append a /: MINIO_BROWSER_REDIRECT_URL="https://minio.example.net/ui/"

Expected Behavior

Setting MINIO_BROWSER_REDIRECT_URL="https://minio.example.net/ui" should work.

Current Behavior

Setting MINIO_BROWSER_REDIRECT_URL="https://minio.example.net/ui" displays a white page and requires an / suffix to fix it.

Possible Solution

Minio should suffix the / automatically. Alternatively this could be fixed in console.

Steps to Reproduce

1. Run Minio with MINIO_SERVER_URL="https://minio.example.net" and MINIO_BROWSER_REDIRECT_URL="https://minio.example.net/ui"
2. Use a nginx reverse proxy as specified in the docs
3. Open https://minio.example.net in a browser
4. Notice the redirect to https://minio.example.net/ui and the white page
5. Change MINIO_BROWSER_REDIRECT_URL to https://minio.example.net/ui/, restart Minio
6. Open https://minio.example.net in a browser
7. Notice the redirect to https://minio.example.net/ui/ and the working console

Your Environment

• MinIO version used (minio --version): RELEASE.2023-08-09T23-30-22Z (commit-id=eb55034dfe5ef82449796c83e3126b245c5aee05)
• Server setup and configuration: 3x(Minio + nginx reverse proxy) + Hetzner Load Balancer
• Operating System and version (uname -a): Linux test1.example.net 6.1.0-11-amd64 minio/minio#1 SMP PREEMPT_DYNAMIC Debian 6.1.38-4 (2023-08-08) x86_64 GNU/Linux
• Web browser: Firefox 116.0.3

[cesnietor]

we'll test if it works with nginx cause it seems it works without it.

[hashworks]

Do you have a recommendation for a nginx vhost config adjustment, if others don't have this problem?

Sep 11, 2023 18:39:36 Cesar N. @.***>:

we'll test if it works with nginx cause it works without it.

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[cesnietor]

this is yet to be confirmed @hashworks (based on a internal discussion), we'll share our findings once we take a look at it. Thanks. Added seems to previous comment :)

[wxrl]

running mcli admin config set local-s3 MINIO_BROWSER_REDIRECT_URL https://my.domain.com/s3/ OR mcli admin config set local-s3 MINIO_BROWSER_REDIRECT_URL="https://my.domain.com/s3/" OR mcli admin config set local-s3 MINIO_BROWSER_REDIRECT_URL=https://my.domain.com/s3/ on my server (as known as local-s3 in the config.json with accessKey and secretKey set correctly) returns mcli: <ERROR> Unable to get help for the sub-system: unknown sub-system MINIO_BROWSER_REDIRECT_URL.....

I can get expected returns running e.g. mcli admin info local-s3 mcli ls local-s3

The same happens when using mc mcli is from https://dl.min.io/client/mc/release/linux-amd64/mc.deb mc is from https://dl.min.io/client/mc/release/linux-amd64/mc

What's the correct way to set with mcli/mc?

[harshavardhana]

mcli admin config set local-s3 MINIO_BROWSER_REDIRECT_URL https://my.domain.com/s3/ OR mcli admin config set local-s3 MINIO_BROWSER_REDIRECT_URL="https://my.domain.com/s3/" OR mcli admin config set local-s3 MINIO_BROWSER_REDIRECT_URL=https://my.domain.com/s3/ on my server (as known as local-s3 in the config.json with accessKey and secretKey set correctly) returns mcli: <ERROR> Unable to get help for the sub-system: unknown sub-system MINIO_BROWSER_REDIRECT_URL.....

You cannot set MINIO_BROWSER_REDIRECT_URL values via mc you need to use export the value before you start MinIO for it to be actionable.

Since it looks like hijacking the actual conversation. Will mark this as outoftopic for now.

[Subetov]

I came across a similar situation. In my case, adding a trailing slash to the MINIO_BROWSER_REDIRECT_URL variable does not give any result. A URL without a trailing slash returns a blank page.

MINIO_VERSION: minio:ICE-3-5-550-RELEASE.2024-01-11T07-46-16Z MINIO_BROWSER_REDIRECT_URL: http://localhost/minio Here is Nginx location conf:

location ~* "^/minio(/|$)(.*)" {
...
    rewrite "(?i)/minio(/|$)(.*)" /$2 break;
    proxy_pass http://upstream_balancer;
...
}

Workaround - Adding the trailing / to the URL (http://192.168.0.193/minio/)

[ThisIsANiceName]

Same issue I cannot get minio to work in a subpath, i just get a balnk page for the main request, the other requests seem to return the intended result