Expected Behavior

When function get_presigned_url called with argument method = 'PUT' correctly signed URL created, which when pasted in browser allows to upload the file

Current Behavior

The error message returned instead of the file upload:

<Error>
<Code>SignatureDoesNotMatch</Code>
<Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message>
<Key>...omitted</Key>
<BucketName>...</BucketName>
<Resource>/.../video1</Resource>
<RequestId>...</RequestId>
<HostId>...</HostId>
</Error>

Possible Solution

Min.io configuration change, adding nginx proxy server

Steps to Reproduce (for bugs)

1. Install and start Min.io on Linux machine (mine is Fedora 39)
2. The script to start Min.io server is start_minio.sh

#!/bin/bash
MINIO_ROOT_USER=admin MINIO_ROOT_PASSWORD=password minio server /opt/minio --console-address :9001

3. Run the script main.py to upload the file:

import logging
from minio import Minio
import datetime

logging.basicConfig(level=logging.DEBUG)

logger = logging.getLogger(__name__)

LOGGER_PREFIX = "MINIO_WITHOUT_DOCKER"

def main():
    ACCESS_KEY = "admin"
    SECRET_KEY = "password"
    MINIO_API_HOST = "localhost:9500"

    merchant_id = "test_bucket"

    client = Minio(MINIO_API_HOST, ACCESS_KEY, SECRET_KEY, secure=False)

    found = client.bucket_exists(merchant_id)
    if not found:
        client.make_bucket(merchant_id)
    else:
        logger.debug(f"{LOGGER_PREFIX}: Bucket {merchant_id} already exists")

    url = client.get_presigned_url(
        "PUT", merchant_id, "test.md", expires=datetime.timedelta(hours=5)
    )

    logger.debug(f"{LOGGER_PREFIX}: url == {url}")

if __name__ == "__main__":
    main()

4. Open URL from terminal in browser and see the error

Context

I'm trying to create video streaming service, where files should be uploaded directly to Min.io using presigned_url

Your Environment

• Version used (minio --version):

minio version RELEASE.2024-05-10T01-41-38Z (commit-id=b5984027386ec1e55c504d27f42ef40a189cdb55)
Runtime: go1.22.3 linux/amd64
License: GNU AGPLv3 - https://www.gnu.org/licenses/agpl-3.0.html
Copyright: 2015-2024 MinIO, Inc.

• Server setup and configuration:
  Min.io running locally on my machine
• Operating System and version:
  Fedora 39, kernel 6.8.9-200.fc39.x86_64 (64-bit)