Biao Geng created FLINK-27615:
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Summary: Document the minimum supported version of k8s for flink
k8s operator
Key: FLINK-27615
URL: https://issues.apache.org/jira/browse/FLINK-27615
Project: Flink
Issue Type: Improvement
Reporter: Biao Geng
In our webhook, to support {{{}watchNamespaces{}}}, we rely on the
{{kubernetes.io/metadata.name}} to filter the validation requests. However,
this label will be automatically added to a namespace only since k8s 1.21.1 due
to k8s' [release
notes|[https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.21.md#v1211]
. If users run the flink k8s operator on older k8s versions, they have add
such label by themselevs to support the feature of namespaceSelector in our
webhook.
As a result, if we want to support the feature defaultly, we may need to
emphasize that users should use k8s >= v1.21.1 to run the flink k8s operator.
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