using fine grained service account IAM roles in EKS

Hi, I'm using service account iam roles in amazon EKS, but I'm not able to get logstash s3 working using an IAM role.

I can see the environment variables in the pod:

AWS_WEB_IDENTITY_TOKEN_FILE: /var/run/secrets/eks.amazonaws.com/serviceaccount/token
AWS_ROLE_ARN: arn:aws:iam::0123456789:role/logstash-cloudfront

The input config:

input {
      s3 {
        role_arn => "${AWS_ROLE_ARN}"
        bucket => "logs-cloudfront"
        prefix => "staging"
        region => "us-west-1"
      }
}

Is there anyway for the plugin to read the identity toke file? Thanks in advance

logstash-plugins / logstash-input-s3

using fine grained service account IAM roles in EKS #207