[jira] [Commented] (AMBARI-15645) Upgrading Kerberized JournalNode requires HDFS principal to perform 'role edits' task

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMBARI-15645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220173#comment-15220173 ] 

Hadoop QA commented on AMBARI-15645:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12796327/AMBARI-15645_branch-2.2_01.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in ambari-server.

Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/6127//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/6127//console

This message is automatically generated.

> Upgrading Kerberized JournalNode requires HDFS principal to perform 'role edits' task
> -------------------------------------------------------------------------------------
>
>                 Key: AMBARI-15645
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15645
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.1.2
>            Reporter: Robert Levas
>            Assignee: Robert Levas
>             Fix For: 2.2.2
>
>         Attachments: AMBARI-15645_branch-2.2_01.patch, AMBARI-15645_trunk_01.patch
>
>
> After upgrading HDP in Ambari version 2.1.2.1 a task a performed to _role edits_ while restarting JournalNodes. If Kerberos is enabled, the JN Kerberos identity is established before making this call when really the HDFS identity should be established - since this is an administrative HDFS call that requires the HDFS administrator user to perform.
> Because of this, the following error is generated and seen in the :
> {noformat}
> Fail: Execution of 'hdfs dfsadmin -rollEdits' returned 255. rollEdits: Access denied for user jn. Superuser privilege is required
> {noformat}
> The offending code is
> {code:title=common-services/HDFS/2.1.0.2.0/package/scripts/journalnode_upgrade.py}
>   if params.security_enabled:
>     Execute(params.jn_kinit_cmd, user=params.hdfs_user)
>   time.sleep(5)
>   hdfs_roll_edits()
>   time.sleep(5)
> {code}
> It should probably be something like:
> {code:title=common-services/HDFS/2.1.0.2.0/package/scripts/journalnode_upgrade.py}
>   if params.security_enabled:
>     Execute(params.hdfs_kinit_cmd, user=params.hdfs_user)
>   time.sleep(5)
>   hdfs_roll_edits()
>   time.sleep(5)
> {code}
> *Note the change from jn to hdfs in the kinit command line.*
> This issue has also been posted in https://issues.apache.org/jira/browse/AMBARI-10519.



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