1. Login to ambari database hosted server.   2. Take the backup of database. Replace XXXXXX with correct pasword nohup mysqldump -u root -pXXXXXX --databases ambari >/ambari.sql & 3. Login to mysql with root or ambari account and remove hive keytabs. delete from kerberos_principal_host where principal_name like '%hive%'; delete from kerberos_principal where principal_name like '%hive%'; 4. Restart Ambari server. 5. Regenerate the keytabs with valid   account 6. Start the Node manager.   Note: its not only for Hive.. we can remove based on error. as caches in ambari database prevents to regenerate again  ... View more