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Posted to common-dev@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2013/07/29 23:55:49 UTC

[jira] [Created] (HADOOP-9789) Support server advertised kerberos principals

Daryn Sharp created HADOOP-9789:
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             Summary: 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


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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