dial tcp i/o timeout then logging in to minio

I've setup an minio installation via docker on one of my servers. I can access the login screen without a problem. However, when the login itself does not work.

Post "https://example.com:9000/": dial tcp :9000: i/o timeout

What could be the reason for this?

This is my docker-compose.yml

version: '3.7'

services:
  minio:
    image: minio/minio:RELEASE.2022-05-19T18-20-59Z.fips
    command: server -C /etc/minio --address ":9000" --console-address ":9001" /data
    ports:
      - "9000:9000"
      - "9001:9001"
    environment:
      MINIO_SERVER_URL: "https://example.com:9000"
      MINIO_ROOT_USER: "minioadmin"
      MINIO_ROOT_PASSWORD: "minioadmin"
    volumes:
      - minio:/data
      - /etc/letsencrypt:/etc/letsencrypt/
      - /etc/minio:/etc/minio/
      
volumes:
  minio:  

there is also an nginx running on that server but I don't think that's the issue.

I had the same issue because I was using Traefik as a reverse proxy.

To fix it, MINIO_SERVER_URL had to be accessible internally using the name of the service in docker-compose otherwise minio-console cant resolve the server through Traefik.

Try setting it like this in docker-compose without https and with the service name and port:

MINIO_SERVER_URL: "http://minio:9000"

I had the same issue. In my case Minio is installed on a Synology NAS, and I use a Reverse Proxy to use my Synology subdomain (full details on the specific setup, including domain used and reverse proxy at this link)

I managed to have a working installation by using the following Docker compose:

version: '3'

services:
  minio:
    image: minio/minio
    ports:
      - "9777:9777"
      - "9701:9701"
    volumes:
      - /volume1/docker/minio/data:/data
      - /volume1/docker/minio/config:/root/.minio
    environment:
      MINIO_ROOT_USER: YourOwnUser
      MINIO_ROOT_PASSWORD: YourOwnPasswd
      MINIO_BROWSER_REDIRECT_URL: "https://mc.yoursub.synology.me"
      #MINIO_SERVER_URL: "https://minio.yoursub.synology.me"
      MINIO_API_DISABLE_ODIRECT: "on"
    command: server --address ":9777" --console-address ":9701" /data

I had to comment out the environment variable MINIO_SERVER_URL, and only use the MINIO_BROWSER_REDIRECT_URL one with the URL for Minio Console (which is the one you use when you login from the browser...the other one is for the API). It mostly works, but I cannot manage to display the files from the Object Browser. The Python client works seamlessly from the Internet and the local network. Hope it helps!

I'm getting the same error since I've added MINIO_SERVER_URL.

But I read that is the way we can get correct share links.

I hope someone else can have good ideas on how to solve that.

Edit: Found a similar issue https://github.com/minio/minio/issues/13859