Deleting a User

You can delete an MRS cluster user that is not required on MRS Manager. Deleting a user is allowed only in clusters with Kerberos authentication enabled or normal clusters with the EIP function enabled.

If you want to create a new user with the same name as user A after deleting user A who has submitted a job on the client or MRS console, you need to delete user A's residual folders when deleting user A. Otherwise, the newly created user A may fail to submit a job.

To delete residual folders, log in to each Core node in the MRS cluster and run the following commands. In the following commands, $user indicates the folder named after the username.

cd /srv/BigData/hadoop/data1/nm/localdir/usercache/

rm -rf $user

The operations described in this section apply only to clusters of versions earlier than MRS 3.x.

For clusters of MRS 3.x or later, see Deleting a User.

Procedure

Access MRS Manager. For details, see Accessing Manager.
On MRS Manager, click System.
In the Permission area, click Manage User.
In the row that contains the user to be deleted, choose More > Delete.

Figure 1 Deleting a user
Click OK.