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https://issues.apache.org/jira/browse/KAFKA-8336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16838605#comment-16838605
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ASF GitHub Bot commented on KAFKA-8336:
---
rajinisivaram commented on pull request #6721: KAFKA-8336; Enable dynamic
reconfiguration of broker's client-side certs
URL: https://github.com/apache/kafka/pull/6721
Enable reconfiguration of SSL keystores and truststores in client-side
channel builders used by brokers for controller, transaction coordinator and
replica fetchers. This enables brokers using TLS mutual authentication for
inter-broker listener to use short-lived certs that may be updated before
expiry without restarting brokers.
### 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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> Enable dynamic update of client-side SSL factory in brokers
> ---
>
> Key: KAFKA-8336
> URL: https://issues.apache.org/jira/browse/KAFKA-8336
> Project: Kafka
> Issue Type: Improvement
> Components: core
>Affects Versions: 2.2.0
>Reporter: Rajini Sivaram
>Assignee: Rajini Sivaram
>Priority: Major
> Fix For: 2.3.0
>
>
> We currently support dynamic update of server-side keystores. This allows
> expired certs to be updated on brokers without a rolling restart. When mutual
> authentication is enabled for inter-broker-communication
> (ssl.client.auth=required), we dont currently dynamically update client-side
> keystores for controller or transaction coordinator. So a broker restart (or
> controller change) is required for cert update for this case. Since
> short-lived SSL cert is a common usecase, we should enable client-side cert
> updates for all client connections initiated by the broker to ensure that SSL
> certificate expiry can be handled with dynamic config updates on brokers for
> all configurations.
>
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