The issue with Google Kubernetes Engine has been resolved for the majority of affected projects as of Monday, 2020-06-29 11:15 US/Pacific.
If you have questions or feel that you may be impacted, please open a case with the Support Team and we will work with you until the issue is resolved.
We will publish analysis of this incident once we have completed our internal investigation.
We thank you for your patience while we’re working on resolving the issue.