Hi,
after successful upgrade of Ambari to 2.0 I see permanent CRIT alert: NameNode High Availability Health
Active and Standby NN are working correctly, as well as HA. But I see the message:
Active[], Standby[], Unknown[‘host1.domain.net:50070′,host2.domain.net:50070′,host3.domain.net:50070′]
I already tried restart all components on host1-3.
Regards,
Pavel