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https://issues.apache.org/jira/browse/FLINK-15816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029601#comment-17029601
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Yang Wang commented on FLINK-15816:
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[~trohrmann] [~felixzheng] Thanks for your explanation. The limitation of 63
characters in Kubernetes is by design[1]. It seems that the limitation will
never change in the future. Even though i think the current exception message
is clear enough, i am not against with the pre-check way.
[1].
[https://github.com/kubernetes/community/blob/master/contributors/design-proposals/architecture/identifiers.md#identifiers-and-names-in-kubernetes]
> Limit the maximum length of the value of kubernetes.cluster-id configuration
> option
> -----------------------------------------------------------------------------------
>
> Key: FLINK-15816
> URL: https://issues.apache.org/jira/browse/FLINK-15816
> Project: Flink
> Issue Type: Sub-task
> Components: Deployment / Kubernetes
> Affects Versions: 1.10.0
> Reporter: Canbin Zheng
> Assignee: Canbin Zheng
> Priority: Minor
> Fix For: 1.11.0, 1.10.1
>
> Attachments: image-2020-01-31-20-54-33-340.png
>
>
> Two Kubernetes Service will be created when a session cluster is deployed,
> one is the internal Service and the other is the rest Service, we set the
> internal Service name to the value of the _kubernetes.cluster-id_
> configuration option and then set the rest Service name to
> _${kubernetes.cluster-id}_ with a suffix *-rest* appended, said if we set the
> _kubernetes.cluster-id_ to *session-test*, then the internal Service name
> will be *session-test* and the rest Service name be *session-test-rest;*
> there is a constraint in Kubernetes that the Service name must be no more
> than 63 characters, for the current naming convention it leads to that the
> value of _kubernetes.cluster-id_ should not be more than 58 characters,
> otherwise there are scenarios that the internal Service is created
> successfully then comes up with a ClusterDeploymentException when trying to
> create the rest Service.
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