@Mondi  just update dfs.cluster.administrators with the admin username you want in hdfs config (and restart hdfs,yarn,MR2,... services) ex: dfs.cluster.administrators = hdfs,ops   you can also use a HDFS administrators group (only one administrator group) using dfs.permissions.superusergroup ex : dfs.permissions.superusergroup = operations   to verify config has been updated, once services restarted hdfs getconf -confKey dfs.cluster.administrators or hdfs getconf -confKey dfs.permissions.superusergroup   ... View more