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keytab regeneration stage failing - upgrading to HDP 3.0.1 from 2.6.5


When upgrading to 3.0.1 from 2.6.5 from Ambari I am getting following error message

An internal system exception occurred: Unable to build keytab regeneration stage

Any idea?

Where should I look for exception error?

Tried restarting KDC but of no help.



After some investigation foend that

KDC Administrator Credentials to the Ambari Credential Store was not properly set.

Then set it from Ambari and it started to work

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