The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.

[cybertoast]

When using buckets that are in certain regions such as me-central-1, the server root (localhost:8080/) gets the following response:

<Error>
<Code>InvalidRequest</Code>
<Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message>
<RequestId>29VT2BYWEKE8102B</RequestId>
<HostId>7QTpAs2a6rjTMOzRZ+seQuoDyvQ5u7rSv65DMJBkjYyo7yNg9WJUaTCWwVcsbhppTt9bQNgg1do=</HostId>
</Error>

Is this a configuration to be changed in the virtualhosts.json?
It seems like the generated s3-proxy.conf may also need a change, but I'm just guessing.

Any help would be greatly appreciated.

[gyoza]

https://stackoverflow.com/questions/26533245/the-authorization-mechanism-you-have-provided-is-not-supported-please-use-aws4

All regions support V4, but US-Standard¹, and many -- but not all -- other regions, also support the other, older scheme, Signature Version 2 ("V2").

According to http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-authenticating-requests.html ... new S3 regions deployed after January, 2014 will only support V4.

Since Frankfurt was introduced late in 2014, it does not support V2, which is what this error suggests you are using.

[gyoza]

Would be weird if such a new project is using such old authentication methods..

[smoogipoo]

It's using such old authentication methods because we use Cloudflare R2.