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From "Robert Levas" <>
Subject Review Request 33192: Add the ability to enable Kerberos and not manage identities
Date Tue, 14 Apr 2015 21:12:27 GMT

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Review request for Ambari, Jaimin Jetly, Robert Nettleton, and Yusaku Sako.

Bugs: AMBARI-10479

Repository: ambari


Add the ability to enable Kerberos and not manage identities.  This should be done by allowing
a user to specify whether all relevant Kerberos identities _should_ or _should not_ be managed
by Ambari.  

A *kerberos-env* property named *manage_identities* is to be added where its value may be
either _true_ or _false_.  By default the value is _true_ (or rather _not false_).  

If _not false_, Ambari will access the registered KDC to create, update, and delete Kerberos
identities as needed.  Ambari will also create, distribute, and delete keytab files as needed.
Because of this, the KDC administrator credentials are required. This is the current behavior
of Ambari 2.0.0.

If _false_, Ambari will *not* access the registered KDC to create, update, or delete Kerberos
identities.  It will also *not* create, distribute, or delete keytab files. Not KDC administrator
credentials will be needed.

Note: a lot of this work has been done for AMBARI-10305.  A current known problem with the
solution for AMBARI-10305 is that the Kerberos service check fails when kerberos-env/manage_identities
is false due to missing data since the special smoke user was not created.


  ambari-server/src/main/java/org/apache/ambari/server/controller/ 5cd75bb




Manually tested

**Local test results:**
Running org.apache.ambari.server.controller.KerberosHelperTest
Tests run: 32, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.228 sec

Tests run: 2860, Failures: 0, Errors: 0, Skipped: 16

[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 39:49.326s
[INFO] Finished at: Tue Apr 14 16:59:54 EDT 2015
[INFO] Final Memory: 86M/1028M
[INFO] ------------------------------------------------------------------------

**Jenkins test results: PENDING**


Robert Levas

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