eks/aws.sdk.kotlin.services.eks.model/Nodegroup/releaseVersion

releaseVersion

val releaseVersion: String?

If the node group was deployed using a launch template with a custom AMI, then this is the AMI ID that was specified in the launch template. For node groups that weren't deployed using a launch template, this is the version of the Amazon EKS optimized AMI that the node group was deployed with.