Isaac Reath created CASSSIDECAR-273:
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Summary: Enable setting node-level Cassandra configs via Sidecar
Key: CASSSIDECAR-273
URL: https://issues.apache.org/jira/browse/CASSSIDECAR-273
Project: Sidecar for Apache Cassandra
Issue Type: Improvement
Reporter: Isaac Reath
A common operator task is managing the configuration of a Cassandra node or
cluster. This involves updating {{cassandra.yaml}} to persist the configuration
and applying the change in process via JMX or by restarting the node.
Sidecar currently supports retrieving node-level configurations via the
{{/api/v1/cassandra/settings}} API. We propose extending this API to also
enable operators to enact configuration changes. When this API is called,
Sidecar should:
* Persist the new setting in {{{}cassandra.yaml{}}}.
* Update the setting via JMX where possible.
* If JMX is not an option, allow the caller to specify whether to restart the
node immediately to apply the change (leveraging the work in
https://issues.apache.org/jira/browse/CASSSIDECAR-266) or wait until the next
convenient restart.
In the future, this API could also support configuration change history and
rollback.
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