Create and manage cluster users - Elastic High Performance Computing

A user is used to indicate your identity when you submit jobs in a cluster. Elastic High Performance Computing (E-HPC) clusters allow you to create users that have different permissions. This way, administrators and ordinary users can be distinguished. This topic describes how to manage users, including creating users, modifying user permissions, resetting user passwords, and deleting users.

Create a user

Open the User page in the E-HPC console.
1. Log on to the E-HPC console.
2. In the top navigation bar, select a region.
3. In the left-side navigation pane, choose Resource Management > User.
On the User page, select the cluster for which you want to create a user from the Cluster drop-down list and click Add New User.

In the Add New User dialog box, follow the on-screen instructions to enter the username and password, select a user group, and then click OK.

User groups are used to control the permissions of users. The following table describes the categories of user groups.

Important

Exercise caution when you grant sudo permissions to users. A cluster may not run as expected if a user who has sudo permissions performs misoperations, such as deleting an E-HPC software-stack module by mistake.

User group	Description
Default authority group	applicable to ordinary users that need only to submit and debug jobs.
Sudo enabled group	applicable to the administrator who needs to manage the cluster. In addition to submitting and debugging jobs, users who have sudo permissions can run sudo commands to install software and restart nodes.

Change user permissions or reset a user password

After you create a user, you can modify the user permissions or reset the user password.

Open the User page in the E-HPC console.
On the User page, select the cluster that you want to manage from the Cluster drop-down list.
On the Cluster User Management tab, find the user whose permissions you want to modify. Then, modify the user permissions or reset the user password based on your requirements.
- Click Modify Authority. In the dialog box that appears, you can modify the user group that the user belongs.
- Click Reset Password. In the dialog box that appears, you can reset the user password.
  Note
  E-HPC does not provide the password recovery feature. You can reset a password for a user whose password is lost or leaked.

Delete a user

We recommend that you delete users who are no longer used.

Important

After a user is deleted, the user data stored in the /home directory is retained for other users to access. However, the user cannot be recovered. Even if another user that has the same name is created, the retained data cannot be reused.

Open the User page in the E-HPC console.
On the User page, select the cluster that you want to manage from the Cluster drop-down list.
On the Cluster User Management tab, find the user that you want to delete and click Delete in the Actions column.
In the message that appears, check the information about the deletion operation and click OK.