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From Manoj Samel <manojsamelt...@gmail.com>
Subject After cluster rolling reboot, nodemanager could not authenticate to resource manager
Date Wed, 28 Jan 2015 02:06:45 GMT
Environment is Hadoop 2.3.0, CDH 5.0,  RM and NN in HA, Kerberos Security

Rolling reboot of cluster was done. Services on each node was not stopped
before, the machines were just shut down, rebooted and services started on
each after reboot. Nodes were shut down in rolling manner such that one RM,
NN etc. were available at all times.

After restart, all services came up but node managers failed to connect to
Resource managers with "invalid Yarn Credentials". Kerberos keytabs etc.
are valid. The Resource managers services had to be restarted again for
node managers to connect successfully.



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