[jira] [Updated] (ZOOKEEPER-2858) Disable reverse DNS lookup for java client

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-2858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ZOOKEEPER-2858:
--------------------------------------
    Labels: pull-request-available  (was: )

> Disable reverse DNS lookup for java client
> ------------------------------------------
>
>                 Key: ZOOKEEPER-2858
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2858
>             Project: ZooKeeper
>          Issue Type: New Feature
>          Components: java client
>    Affects Versions: 3.4.6
>            Reporter: Andrey
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I have the following setup:
> - zookeeper server running in docker container
> - kerberos auth
> When client setup sasl connection it creates service principal name as:
> - "principalUserName+"/"+addr.getHostName()",
> where:
> - addr.getHostName is the reverse DNS of original server host.
> If zookeeper nodes will be deployed behind the firewall or software defined network (the docker case), then reverse DNS host won't match original server host. And this is done by design.
> If these hosts won't match, then principals won't match and Kerberos auth will fail.
> Is it possible to introduce some configuration parameter to disable reverse DNS lookups?



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