I have configured the bus like this

services.AddMassTransit(x =>
        {
            x.UsingAmazonSqs((context, cfg) =>
            {
                cfg.Durable = true;
                cfg.AutoDelete = false;

                cfg.Host("us-east-2", h =>
                {
                });
            });
        });

I've not specified credential to allow AWS SDK to resolve the credential automatically. https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/creds-assign.html

The setup works fine on my local machine with a AWS session profile. However when I deploy the code in EKS, I got the following message:

Health check masstransit-bus with status Degraded completed after 1.9351ms with message 'Degraded Endpoints: {{THE BUS ENDPOINT}}'

There's no other error or warning, but the bus is not working. I have verified IRSA (https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts.html) has been configured correctly for the pod.

Am I missing something? What can I do to track down the underlying issue?