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Configuring ambari views on Kerberized Cluster

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Rising Star

Hi Folks,

In the kerberized cluster, we integrated AD for Ambari authentication. Using the AD users, I am able to login to Ambari. But when I log in by default it lands on the views. But When I click any of the views, I see an error.

500 Authentication requiredCollapse Stack Trace

org.apache.hadoop.security.AccessControlException: Authentication required at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:334)
at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:91) 
at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:608) 
at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:458) 
at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:487)

While configuring the file view here are the properties I've used :

Settings:

WebHDFS Username ${username}

WebHDFS Authorization = auth=KERBEROS;proxyuser=admin

Cluster Configuration

Related to the cluster HDFS and name node details.

After Kerberization I created a user "ambari­-user/ambari-Host_name_here@KDCRealm.com

And also created a key tab, copied on the ambari -server machine.

Stopped Ambari server and then

$ambari­-server setup­security

Specified the keytab of the Ambari-user (newly created the User in KDC) and started the Ambari-Server.

Trying to access the Ambari -view but getting the above error.

Did any one face similar issue?

I am following the HDP documention section Configuring Ambari User Views with a Secure Cluster : http://hortonworks.com/wp-content/uploads/2015/04/AmbariUserViewsTechPreview_v1.pdf

Regards,

DP

1 ACCEPTED SOLUTION

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Master Mentor
@Darpan Patel

http://docs.hortonworks.com/HDPDocuments/Ambari-2....

If the cluster your views will communicate with is Kerberos-enabled, you need to configure the Ambari Server instance(s) for Kerberos and be sure to configure the views to work with Kerberos.

View solution in original post

25 REPLIES 25

avatar
Master Mentor
@Darpan Patel

http://docs.hortonworks.com/HDPDocuments/Ambari-2....

If the cluster your views will communicate with is Kerberos-enabled, you need to configure the Ambari Server instance(s) for Kerberos and be sure to configure the views to work with Kerberos.

avatar
Rising Star

@Neeraj Sabharwal, @Eric Walk

Guys,

Some comments advocate that in HA , Ambari views have issues.

Are there limitations of PIG & HIVE Ambari Views that they cannot work with HDP cluster in High Availability ? Could you please confirm?

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Master Mentor

@Darpan Patel This thread is getting offtrack from the original question. I don't see HA support for Pig and Hive yet. Please accept one of the answers to close the thread if anyone of the answers did help.

http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.0.0/bk_ambari_views_guide/content/_settings_and_...

1040-screen-shot-2015-12-23-at-102152-am.png

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Rising Star

@Neeraj Sabharwal

I tried configuring Hive/PIG views as per the documentation.

If you confirm that in the Keberized cluster and NN Highly available PIG/HIVe views not supported then I will close the thread 🙂

Thank you very much.

avatar
Rising Star

So I had a bunch of trouble with these, here are some of the things to note:

  1. When creating the view in Ambari don't use the "Local Ambari Managed Cluster" option, always use the custom when you have a kerberized cluster.
  2. Definitely read the instructions carefully (i.e. this one: http://docs.hortonworks.com/HDPDocuments/Ambari-2.1.2.1/bk_ambari_views_guide/content/section_pig_vi...) per @Neeraj Sabharwal.
  3. Stop Ambari Server, do a kdestroy for the user ambari-server run as, do a kinit for the ambari user using it's proper keytab as the ambari linux user, then start ambari-server again. Do this procedure each time you restart Ambari Server.
  4. For the pig view, there was a known issue where you needed to add: ,/usr/hdp/${hdp.version}/hive/lib/hive-common.jar to your templeton.libjars for WebHCat (https://issues.apache.org/jira/browse/AMBARI-13096). Check your Ambari version...

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Master Mentor

@Eric Walk Thank you for sharing these details. @jeff @Paul Codding

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Rising Star

No worries, I hope some of these things have been fixed since I went through this back in September (#4 should be resolved in Ambari 2.1.2). The Kdestroy/Kinit thing was definitely strange, never did work out why that was needed.

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Rising Star

Thanks will check and update in a few hours. 🙂