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https://issues.apache.org/jira/browse/HDFS-12027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16061210#comment-16061210
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patrick white commented on HDFS-12027:
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Thanks Xiao, i was not aware of the jmx call support yet. I tried that real
quick and got servlet CNF exceptions, so i need to look further.
Sounds promising though, especially if available to clients (which of course
brings up security questions).
> Add KMS API to get service version and health check
> ---------------------------------------------------
>
> Key: HDFS-12027
> URL: https://issues.apache.org/jira/browse/HDFS-12027
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: kms
> Reporter: patrick white
> Priority: Minor
>
> Enhancement request, add an API to the Key Management Server which can be
> used for health monitoring as well as programatic version checks, such as to
> return the service version identifier, suggest this;
> GET http://HOST:PORT/kms/v1/key/kms_version
> This API would be useful for production monitoring tools to quickly do KMS
> instance reporting (dashboards) and basic health checks, as part of overall
> monitoring of a Hadoop stack installation.
> Such an API would also be useful for debugging initial bring-up of a service
> instance, such as validation of the KMS webserver and its interaction with ZK
> before the key manager(s) are necessarily working. Currently i believe a
> valid key needs to be setup and available before calls can return success.
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