Troubleshoot the upgrade process¶
This topic describes common problems and errors that occur during the upgrade process and how to identify and resolve them.
To check for multiple conflicting upgrades:
The upgrade command automatically checks for multiple
the existence of which can indicate that the cluster is still undergoing a
prior manual upgrade. You must resolve the conflicting node labels before
proceeding with the upgrade.
To resolve upgrade failures:
You can resolve upgrade failures on worker nodes by changing the node labels back to the previous version, but this is not supported on manager nodes.
To check Kubernetes errors:
For more information on anything that might have gone wrong during the upgrade process, check Kubernetes errors in node state messages after the upgrade is complete.