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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