ok I reset the KDC credentials via the Manage KDC credentials button and I entered principal as admin/admin. now I am not getting locked out but if I try to reinstall KMS I am getting t he error below .. he is not finding the krb5.conf file . is there a setting in Kerberos which is messed up ? since as I stated earlier the TGT system is working fine on the command level for HIVE n HBASE ? ... 103 more 23 Dec 2016 22:16:33,131 WARN [ambari-client-thread-837] ServletHandler:561 - Error Processing URI: /api/v1/clusters/FDOT_Hadoop/hosts/hadoop1.abc.com/host_components/RANGER_KMS_SERVER - (java.lang.RuntimeException) Update Host request submission failed: org.apache.ambari.server.AmbariException: The 'krb5-conf' configuration is not available 23 Dec 2016 22:16:33,131 WARN [ambari-client-thread-837] ServletHandler:561 - Error Processing URI: /api/v1/clusters/FDOT_Hadoop/hosts/hadoop1.abc.com/host_components/RANGER_KMS_SERVER - (java.lang.RuntimeException) Update Host request submission failed: org.apache.ambari.server.AmbariException: The 'krb5-conf' configuration is not available ... View more