Cannot configure node group in new EKS cluster due to no Node IAM role found
This is actually pretty well described in the docs.

Before you create worker nodes, you must create an IAM role with the
following IAM policies:
AmazonEKSWorkerNodePolicy
AmazonEKS_CNI_Policy
AmazonEC2ContainerRegistryReadOnly

Also you need to make sure that this role could be assumed by EKS.
{
  &quot;Version&quot;: &quot;2012-10-17&quot;,
  &quot;Statement&quot;: [
    {
      &quot;Effect&quot;: &quot;Allow&quot;,
      &quot;Principal&quot;: {
        &quot;Service&quot;: &quot;ec2.amazonaws.com&quot;
      },
      &quot;Action&quot;: &quot;sts:AssumeRole&quot;
    }
  ]
}