gke/WARN/2021_001
GKE master version available for new clusters.
Product: Google Kubernetes Engine
Rule class: WARN - Something that is possibly wrong
Description
The GKE master version should be a version that is available for new clusters. If a version is not available it could mean that it is deprecated, or possibly retired due to issues with it.
Remediation
Upgrade the GKE master to a supported version.