Hi,

after enabling Kerberos security and restarting the cluster, the status of service HDFS shows "Bad", despite the service instances are all "Good".

Seems like just the service checks are failing, error messages from CM:

1.) No connection to determine the active NameNode could be made for the last 3 minute(s)...

2.) Canary test failed to create parent directory for /tmp/.cloudera_health_monitoring_canary_files.

and even the Namenode UI cannot be opened successfully => after clicking "Namenode WebUI" (which results in http://hadoop-pg:50070) in service view I receive

"

HTTP ERROR 401

Problem accessing /index.html. Reason:

"

How to solve the described issues

a) eliminate failures of hdfs service checks, and

b) being unable to open Namenode-UI 

??

thanks in advance, Gerd