The Kubernetes 1.22 release removes a lot of deprecated resource versions.
This guide is intended to help you safely upgrade your cluster a supported Kubernetes version that MetaKube offers.
Kubernetes commonly deprecates resource versions. Deprecated versions are "marked" for removal for a future version.
Kubernetes hasn't removed resource versions since 1.16, so 1.22 is a special release in this regard.
All the versions that are being removed, have respective stable "v1" versions.
So all objects of the resources have already been translated and stored by Kubernetes in their "preferred" version "v1".
However, the Kubernetes API will no longer accept operations on resources with versions that were removed.
This means, that clients that use these versions, will fail with errors.
The most common clients are:
helmusing Kubernetes manifests
Most open source software for Kubernetes have released newer versions that are no longer using deprecated versions.
Kubernetes won't store objects in their deprecated versions, so listing e.g. all
Ingress objects, will show only
To find out if you're using deprecated versions:
helm templatecommand to print the manifests that Helm installs.
Some resources use a modified schema, so you might have to change some fields.
The Official Deprecation Guide has detailed information on each resource.