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https://issues.apache.org/jira/browse/KAFKA-6805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16444274#comment-16444274
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ASF GitHub Bot commented on KAFKA-6805:
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rajinisivaram opened a new pull request #4898: KAFKA-6805: Enable broker
configs to be stored in ZK before broker start
URL: https://github.com/apache/kafka/pull/4898
Support configuration of dynamic broker configs in ZooKeeper before starting
brokers using ConfigCommand. This will allow password configs to be encrypted
and stored in ZooKeeper, without requiring clear passwords in server.properties
to bootstrap the broker first.
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> Allow dynamic broker configs to be configured in ZooKeeper before starting
> broker
> ---------------------------------------------------------------------------------
>
> Key: KAFKA-6805
> URL: https://issues.apache.org/jira/browse/KAFKA-6805
> Project: Kafka
> Issue Type: Task
> Components: tools
> Reporter: Rajini Sivaram
> Assignee: Rajini Sivaram
> Priority: Major
> Fix For: 2.0.0
>
>
> At the moment, dynamic broker configs like SSL keystore and password can be
> configured using ConfigCommand only after a broker is started (using the new
> AdminClient). To start a broker, these configs have to be defined in
> server.properties. We want to restrict updates using ZooKeeper once broker
> starts up, but we should allow updates using ZK prior to starting brokers.
> This is particularly useful for password configs which are stored encrypted
> in ZK, making it difficult to set manually before starting brokers.
> ConfigCommand is being updated to talk to AdminClient under KIP-248, but we
> will need to maintain the tool using ZK to enable credentials to be created
> in ZK before starting brokers. So the functionality to set broker configs can
> sit alongside that.
>
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