Can you try something please? Use awscurl to check what you get from this:
$ awscurl --region us-east-1 --service aps
Also, after the merge of the sigv4 proxy side car in upstream, we updated the launch blog post Getting Started with Amazon Managed Service for Prometheus.
I’m not sure where you have your
remote_write config from but you shouldn’t have the AWS static credentials in there but an IAM role with an IAM policy that has permissions to remote-write into the AMP workspace (details see above blog post). Do you have said IAM role created and if so, did you check if the service account used by Prom is annotated accordingly, something like the following: