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From Pratik Gadiya <pratik_gad...@persistent.com>
Subject RE: Access on HDFS
Date Fri, 08 May 2015 15:57:28 GMT
Confirmed, that I have checked it on Namenode.
In addition to that, I have checked on all of the nodes in observed that superusergroup is
set as “hdfs” in hdfs-site.xml for all nodes.

Thanks,
Pratik Gadiya

From: Olivier Renault [mailto:orenault@hortonworks.com]
Sent: Friday, May 08, 2015 8:59 PM
To: user@hadoop.apache.org
Subject: Re: Access on HDFS

Could you confirm that you are doing it on the namenode ? ( I tend to do it on all nodes )

Thanks,
Olivier


From: Pratik Gadiya
Reply-To: "user@hadoop.apache.org<mailto:user@hadoop.apache.org>"
Date: Friday, 8 May 2015 16:14
To: "user@hadoop.apache.org<mailto:user@hadoop.apache.org>"
Subject: RE: Access on HDFS

Checked it’s hdfs

    <property>
      <name>dfs.permissions.superusergroup</name>
      <value>hdfs</value>
    </property>

Thanks,
Pratik

From: Olivier Renault [mailto:orenault@hortonworks.com]
Sent: Friday, May 08, 2015 8:39 PM
To: user@hadoop.apache.org<mailto:user@hadoop.apache.org>
Subject: Re: Access on HDFS

You need to double check which group is setup in hdfs-site.xml. The parameter is: dfs.permissions.superusergroup

Thanks
Olivier

From: Pratik Gadiya
Reply-To: "user@hadoop.apache.org<mailto:user@hadoop.apache.org>"
Date: Friday, 8 May 2015 15:46
To: "user@hadoop.apache.org<mailto:user@hadoop.apache.org>"
Subject: Access on HDFS

Hi All,

I want to add a user who can create/remove and perform all the operations on hdfs.

Here is what I tried:


1.       Create user: adduser admin

2.       /usr/sbin/usermod -a -G hdfs admin

And when I try to create a directory on hdfs under “/” it raises error as follows,
[root@vmkdev0021 ~]# id admin
uid=500(admin) gid=500(admin) groups=500(admin),498(hdfs)

[root@vmkdev0021 ~]# su admin
[admin@vmkdev0021 root]$ hadoop  fs -mkdir /input
mkdir: Permission denied: user=admin, access=WRITE, inode="/":hdfs:hdfs:drwxr-xr-x

Please let me know how can I overcome this, this is reallly bugging me.

With Regards,
Pratik Gadiya


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