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From "Omkar Vinit Joshi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9789) Support server advertised kerberos principals
Date Tue, 13 Aug 2013 23:22:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739009#comment-13739009
] 

Omkar Vinit Joshi commented on HADOOP-9789:
-------------------------------------------

[~daryn] sorry didn't get time yesterday to check the latest patch ..I will try on my local
secured cluster and let you know..Thanks for fixing it.
                
> Support server advertised kerberos principals
> ---------------------------------------------
>
>                 Key: HADOOP-9789
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9789
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: ipc, security
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>             Fix For: 3.0.0, 2.1.1-beta
>
>         Attachments: HADOOP-9789.2.patch, HADOOP-9789.patch, HADOOP-9789.patch, hadoop-ojoshi-datanode-HW10351.local.log,
hadoop-ojoshi-namenode-HW10351.local.log
>
>
> The RPC client currently constructs the kerberos principal based on the a config value,
usually with an _HOST substitution.  This means the service principal must match the hostname
the client is using to connect.  This causes problems:
> * Prevents using HA with IP failover when the servers have distinct principals from the
failover hostname
> * Prevents clients from being able to access a service bound to multiple interfaces.
 Only the interface that matches the server's principal may be used.
> The client should be able to use the SASL advertised principal (HADOOP-9698), with appropriate
safeguards, to acquire the correct service ticket.

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