Smartstore: pod roles - regional sts endpoint

[dnavaraWH]

Please select the type of request

Enhancement

Tell us more

Describe the request

I am trying to authenticate to SmartStore using IAM role ( pod roles) instead of IAM USER, however as our cluster is in eu-west-1 we can/want to only use sts.eu-west-1.amazonaws.com endpoint.

It looks like default behaviour is however sts.amazonaws.com, and there seems to be no way to change this.

We are seeing the following error:
ERROR AwsCredentials - Failed to execute runSync() for transaction with uri=https://sts.amazonaws.com/ http_code=502

Expected behavior
I want to be able to set regional sts just like it's done in Splunk add on for AWS

Splunk setup on K8S
SOK 2.4.0
Splunk 9.1.2

Reproduction/Testing steps
Create cluster in eu-west-1 region and don't allow it to talk to us-east-1 via web proxy

K8s environment
K8s v1.28.5-eks-5e0fdde.
SOK 2.4.0
Splunk 9.1.2

Proposed changes(optional)
Allow for regional sts endpoints