Region not detected from credentials file

[mfischer-zd]

The AWS CLI can obtain its working region from a credentials file, e.g.:

[profile tokyo]
source_profile = default
region = ap-northeast-1
role_arn = arn:aws:iam::123456789:role/master-of-the-universe

The Ruby code should behave similarly if AWS_PROFILE is set, without also requiring AWS_DEFAULT_REGION or AWS_REGION to be set.

[awood45]

Thank you for the feature request. We're looking at the best way to support some of these CLI configuration values going forward.

In the meantime, one option is to use the AWS_REGION environment variable, if you use the same region across clients.

[mfischer-zd]

Actually, it looks like the Ruby SDK doesn't support the modern CLI config file format at all ($HOME/.aws/config, as opposed to the legacy $HOME/.aws/credentials file). See #1045

[awood45]

This is correct, that's currently CLI-specific.

Given that there is a large ask for this, we are looking for the best way to support some of these features, without introducing unexpected behavior into the SDK.

[awood45]

Addressed by #1178

[Brotakuu]

Please add this to the docs. Spent way too much time debugging what turned out to be a region mismatch.

[awood45]

#1178 has been merged, this will be supported with the next release, which will be version 2.4.0.