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From "Robert Levas" <rle...@hortonworks.com>
Subject Re: Review Request 34998: Non-root Agent: Kerberos Wizard - Check Kerberos fails during Test Kerberos Client
Date Wed, 03 Jun 2015 12:40:18 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/34998/#review86402
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Ship it!


Ship It!

- Robert Levas


On June 3, 2015, 8:29 a.m., Andrew Onischuk wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/34998/
> -----------------------------------------------------------
> 
> (Updated June 3, 2015, 8:29 a.m.)
> 
> 
> Review request for Ambari and Robert Levas.
> 
> 
> Bugs: AMBARI-11647
>     https://issues.apache.org/jira/browse/AMBARI-11647
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> When enabling Kerberos on a non-root Ambari 2.0.0-151 setup, the Check Kerberos step
fails during the Test Kerberos Client task.
> 
> The problem in the tasks stderr is:
> 
> Fail: Execution of '/usr/bin/kinit -c /var/lib/ambari-agent/data/tmp/kerberos_service_check_cc_30399f1839f2d5ac0ada0c280b95657e
-kt /etc/security/keytabs/kerberos.service_check.pfrlxjlh.keytab ambari-qa_rghrcfxx@EXAMPLE.COM'
returned 1. kinit: Permission denied while getting initial credentials
> 
> 
> When capturing that keytab with 'cp -a' and trying to use it, I fail to authenticate:
> 
> 
> [root@revo4 ~]# ls -l /etc/security/keytabs/kerberos.service_check.pfrlxjlh.keytab 
> -rw-r-----. 1 ambari-qa hadoop 358 Jun  1 15:22 /etc/security/keytabs/kerberos.service_check.pfrlxjlh.keytab
> [root@revo4 ~]# klist -ket /etc/security/keytabs/kerberos.service_check.pfrlxjlh.keytab

> Keytab name: FILE:/etc/security/keytabs/kerberos.service_check.pfrlxjlh.keytab
> KVNO Timestamp         Principal
> ---- ----------------- --------------------------------------------------------
>    1 06/01/15 15:22:01 ambari-qa_pfrlxjlh@EXAMPLE.COM (arcfour-hmac) 
>    1 06/01/15 15:22:01 ambari-qa_pfrlxjlh@EXAMPLE.COM (aes256-cts-hmac-sha1-96) 
>    1 06/01/15 15:22:01 ambari-qa_pfrlxjlh@EXAMPLE.COM (aes128-cts-hmac-sha1-96) 
>    1 06/01/15 15:22:01 ambari-qa_pfrlxjlh@EXAMPLE.COM (des-cbc-md5) 
>    1 06/01/15 15:22:01 ambari-qa_pfrlxjlh@EXAMPLE.COM (des3-cbc-sha1) 
> [root@revo4 ~]# kinit -kt /etc/security/keytabs/kerberos.service_check.pfrlxjlh.keytab
ambari-qa_pfrlxjlh@EXAMPLE.COM
> kinit: Client not found in Kerberos database while getting initial credentials
> 
> I validated that this kinit call is not run through sudo as there are no entries in /var/log/secure
denying the action, and there are no instances in which ambari-sudo.sh is being called in
regards to this command that I could find.
> 
> So, I need help in identifying why this is happening during the Check Kerberos step,
and why the captured keytab isn't usable.
> 
> 
> Diffs
> -----
> 
>   ambari-server/src/main/resources/common-services/KERBEROS/1.10.3-10/package/scripts/service_check.py
412d12d 
> 
> Diff: https://reviews.apache.org/r/34998/diff/
> 
> 
> Testing
> -------
> 
> 1. Install cluster with ambari-agent
> 2. Kerberize it
> 
> also mvn clean test
> 
> 
> Thanks,
> 
> Andrew Onischuk
> 
>


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