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https://issues.apache.org/jira/browse/FLINK-21382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286452#comment-17286452
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Till Rohrmann commented on FLINK-21382:
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That's very good [~fly_in_gis]. I've actually overlooked this ticket. I will
FLINK-21082 in favour of this ticket because here we already link to a possible
way how to do it.
> Standalone K8s documentation does not explain usage of standby JobManagers
> --------------------------------------------------------------------------
>
> Key: FLINK-21382
> URL: https://issues.apache.org/jira/browse/FLINK-21382
> Project: Flink
> Issue Type: Improvement
> Components: Deployment / Kubernetes, Documentation
> Affects Versions: 1.12.1, 1.13.0
> Reporter: Till Rohrmann
> Priority: Major
>
> Our [standalone K8s
> documentation|https://ci.apache.org/projects/flink/flink-docs-release-1.12/deployment/resource-providers/standalone/kubernetes.html#high-availability-with-standalone-kubernetes]
> mentions how to configure K8s HA services. It does not mention that this
> only works with a single JobManager. When using standby JobManagers, then the
> given deployment yamls won't work because the {{jobmanager.rpc.address}} is
> configured to be the {{jobmanager}} service.
> Changing the configuration to work is surprisingly difficult because of a
> lack of documentation. Moreover, it is quite difficult to pass in custom
> configuration values when using a ConfigMap for sharing Flink's
> {{flink-conf.yaml}}. The problem is that mounted ConfigMaps are not writable
> from a pod perspective. See [this
> answer|https://stackoverflow.com/a/66228073/4815083] for how one could
> achieve it.
> I think we could improve our documentation to explain our users how to
> configure a standalone HA cluster with standby JobManagers.
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