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Unable to add the new host in the existing HDP Kerberized Cluster

Unable to add the new host in the existing HDP Kerberized Cluster

New Contributor

Hi Team,

I am unable to add the new host in the existing dev HDP Kerberized cluster.

Getting "encountered an error" while installing the HDP.


Please find the error in ambari server log:

108933-1558691905324.png


5 REPLIES 5

Re: Unable to add the new host in the existing HDP Kerberized Cluster

Mentor

@sai venkatesh

The krb5.conf is a configuration file that should be distributed to all the hosts in the cluster On Centos the location /etc/krb5.conf also make sure that your passwordless connection is working between the Ambari server and the new host you intend to add.

Very important to update your /etc/hosts on all the hosts to be identical.


Once that is in place you should be able to add the host without and issue, Please revert if you encounter any problem

Highlighted

Re: Unable to add the new host in the existing HDP Kerberized Cluster

New Contributor

@geoffrey Shelton Okot I have copied the krb5.conf to new host and tried adding the host details in the /etc/hosts. After certain time i see cluster was going down and revoked the /etc/hosts. Please find the log taken from ambari-server

109003-1559042774055.png

Re: Unable to add the new host in the existing HDP Kerberized Cluster

New Contributor

@Geoffrey Shelton Okot please see the above comment

Re: Unable to add the new host in the existing HDP Kerberized Cluster

Mentor

@sai venkatesh

I think you have not yet done one last step after, updating the /etc/hosts entries on all the hosts. You should now go to Ambari and select add host see attached screenshots


Add_host01.PNG


Add_host02.PNG

The Ambari server should install the Ambari-agent on the new server and configure the ambari-agent.ini and then trigger Kerberos to generate the host keytab and that should succeed and those errors will disappear.

HTH

Re: Unable to add the new host in the existing HDP Kerberized Cluster

Mentor

@sai venkatesh

Any updates?