Hi Loïc,

I am sorry it took so long to get back to you. I didn't see your question until 
just now.

For now, Ambari needs to be on a host in the cluster. We hope to fix this 
requirement soon, but at least through Ambari 2.1, this requirement will stand.

So if you have a cluster such that the host that Ambari runs on is not port of 
the it, there will be several error conditions.  For one, the Kerberos client 
package will not be automatically installed.  If you happened to manually 
install it, then there is an issue scheduling tasks on the Ambari server. Such 
tasks include generating principals using kadmin (if using the MIT KDC option).

If you add the host that run Ambari to your cluster (before enabling Kerberos), 
this issues should go away.  You might, however, need to set the host to have 
at least one client component on it for the Kerberos client to be installed on 
it.

Rob




From: Chanel Loïc <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Date: Monday, May 11, 2015 at 10:29 AM
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: Kadmin installation

Hi All,

As I was tryiing to Kerberize my cluster, I noticed something that seems weird.
Once Ambari has installed a Kerberos Client on the cluster's hosts, it tries to 
explore the database, but ... The Kerberos client is not deployed on the Ambari 
cluster. So if a Kerberos client has not been manually installed, the 
configuration of Kerberos crashes, with a message saying there has been an 
error while calling  Kadmin which does not exist.

Is it normal ? Did I miss something ?

Thanks,


Loïc

--------------------------------------------------------
Loïc CHANEL
Ingénieur stagiaire (TO - XaaS)
+33 (04) 78 17 80 71
desk 220
Bât Le Mirage
53 Avenue Paul Krüger
69624 Villeurbanne Cedex
worldline.com<http://atosworldline.com/>

[cid:[email protected]]


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