Assigning superuser privileges to a local user

[Rupesh]

Hello IDH users,

I am trying to make one of a local user ('rupesh') to be a superuser who manages all the administrative tasks. So, I have changed dfs.permissions.supergroup to the value "hdfs" and I have added local user "rupesh" to the group "hdfs".

But somehow, when I run the command hadoop dfsadmin -report as user "rupesh", I still see permission denied error?

[root@hadoope1 ~]# sudo -u rupesh hadoop dfsadmin -report

report: org.apache.hadoop.security.AccessControlException: Access denied for user rupesh. Superuser privilege is required

[root@hadoope1 ~]# id rupesh

uid=500(rupesh) gid=500(rupesh) groups=500(rupesh),491(hdfs)

Can someone help me with this? Am I missing any configuration steps?

Thanks,

Rupesh

[Bhasker Allene]

Hi Rupesh,

one thing worth trying is 

Create a new unix user id  that belongs to hdfs group.

execute following command as unix admin.

useradd rupeshadmin -g hdfs -s /bin/bash 

then change password using 

passwd rupeshadmin

if you want add this user to other groups then  

You can create user with -G option as follows 

useradd rupeshadmin -g hdfs -G hadoop,mapred,hbase,zookeeper,hive,sqoop,flume -s /bin/bash

-Cheers,

BA