Error mounting a volume using the AWS EFS CSI Driver Operator on ROSA with STS

Issue

• When installing the AWS EFS CSI Operator on ROSA cluster with STS enabled, the aws-efs-csi-driver-controller pods are not starting due to missing aws-credentials secret. It is still looking for IAM user credentials which are not available on an STS cluster since everything uses IAM Roles.

• The events shows error messages similar to the following ones:

  MountVolume.SetUp failed for volume "aws-credentials" : secret "aws-efs-cloud-credentials" not found
  

  Warning  FailedMount  48s (x10 over 5m16s)  kubelet            MountVolume.SetUp failed for volume "pvc-XXXXXX" : rpc error: code = Internal desc = Could not mount "fs-XXXX:/" at "/var/lib/kubelet/pods/XXXXX/volumes/kubernetes.io~csi/pvc-XXXXXX/mount": mount failed: exit status 32
  Mounting command: mount
  Mounting arguments: -t efs -o accesspoint=fsap-xxxxx,tls fs-XXXX:/ /var/lib/kubelet/pods/XXXXX/volumes/kubernetes.io~csi/pvc-XXXXXX/mount
  Output: Could not start amazon-efs-mount-watchdog, unrecognized init system "aws-efs-csi-dri"
  b'mount.nfs4: access denied by server while mounting 127.0.0.1:/'
  Warning: config file does not have fips_mode_enabled item in section mount.. You should be able to find a new config file in the same folder as current config file /etc/amazon/efs/efs-utils.conf. Consider update the new config file to latest config file. Use the default value [fips_mode_enabled = False].Warning: config file does not have retry_nfs_mount_command item in section mount.. You should be able to find a new config file in the same folder as current config file /etc/amazon/efs/efs-utils.conf. Consider update the new config file to latest config file. Use the default value [retry_nfs_mount_command = True].