[jira] [Created] (HDFS-12027) Add KMS API to get service version and health check

["patrick white (JIRA)" <ji...@apache.org>]

patrick white created HDFS-12027:
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             Summary: 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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