Restart Ambari Services

Ambari shows ‘Restart Required’ for dependent services. Restart the services to make sure the configurations are reflected.

  • To refresh ‘beacon’ user privileges as hadoop superuser, you can use refresh hadoop group mapping command or restart namenode service. Refresh the Hadoop group mapping commands:
    • hdfs dfsadmin -refreshSuperUserGroupsConfiguration
    • hdfs dfsadmin -refreshUserToGroupsMappings
  • Verify that Beacon was added as a user to the HDFS superuser group.
    • hdfs groups beacon
    The output should display HDFS (or value of dfs.permissions.superusergroup config) as one of the groups.
  • Next, Restart Hiveserver2 to refresh Hive configurations. Restart node managers to create ‘beacon’ OS user.