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https://issues.apache.org/jira/browse/HADOOP-18919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776092#comment-17776092
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ASF GitHub Bot commented on HADOOP-18919:
-----------------------------------------
dombizita opened a new pull request, #6194:
URL: https://github.com/apache/hadoop/pull/6194
### Description of PR
Previously in #5638 there were methods added to ZKCuratorManager, where we
are setting the SSL configuration in a ZKClientConfig if SSL is enabled for ZK.
I moved this to SecurityUtil and use it to construct the same for HDFS. HDFS is
creating ZooKeeper instance in ZKFC, where it is not using ZKCuratorManager.
I added HDFS configuration key called `dfs.ha.zkfc.client.ssl.enabled`,
which is storing the enablement of SSL in ZKFC. If it is enabled, we are
creating a TruststoreKeystore and give it to ActiveStandbyElector during
initialisation and later set the SSL configs there, so the ZooKeeper will be
created correctly.
### How was this patch tested?
I added unit tests, which are checking if we are creating a ZK with/without
TruststoreKeystore it is setting the truststore/keystore location and password
accordingly in the ZKClientConfig.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
> Zookeeper SSL/TLS support in HDFS
> ----------------------------------
>
> Key: HADOOP-18919
> URL: https://issues.apache.org/jira/browse/HADOOP-18919
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Zita Dombi
> Assignee: Zita Dombi
> Priority: Major
>
> HADOOP-18709 added support for Zookeeper to communicate with SSL/TLS enabled
> in hadoop-common. With those changes we have the necessary parameters, that
> we need to set to enable SSL/TLS in a ZK Client.
> In YARN-11468 the SSL communication can be set in Yarn, now we need to
> similar changes in HDFS to enable it correctly. In HDFS ZK Client is used in
> the Failover Controller. In this improvement we need to create the ZK client
> with the necessary SSL configs if we enable it, which we can track under a
> new HDFS config.
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