Create and manage cluster users - Elastic High Performance Computing

After you create an Elastic High Performance Computing (E-HPC) cluster, you must create a user to submit jobs in the cluster. This topic describes how to manage users, including creating users, modifying user permissions, resetting user passwords, and deleting users.

Prerequisites

The cluster is in the Running state.

Create a user

Before you submit a job in a cluster, you must create a user for the cluster.

Go to the Cluster Details page.
1. Log on to the E-HPC console.
2. In the left part of the top navigation bar, select a region.
3. In the left-side navigation pane, click Cluster.
4. On the Cluster List page, find the cluster that you want to manage and click the cluster ID.
In the left-side navigation pane, click User Management.
On the User Management page, click Add User.

In the Add User dialog box, configure the parameters. The following table describes the parameters.

Parameter	Description
Username	The username. The username must be 6 to 30 characters in length. The username must start with a letter. The username can contain letters, digits, and periods (`.`).
Role Permissions	Regular Permissions Group: suitable for regular users that only submit and debug jobs. Sudo Permissions Group: suitable for administrators who need to manage clusters. In addition to submitting and debugging jobs, users who have sudo permissions can run sudo commands to install software and restart nodes. 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.
Password and Repeat Password	The password required if the user wants to log on to the cluster by using the password. Follow the on-screen instructions to specify the parameters.

Click Confirm.
After you complete the operations, you can view the information of all users in the cluster on the User Management page.

Modify the permissions or password of a user

Go to the Cluster Details page.
1. Log on to the E-HPC console.
2. In the left part of the top navigation bar, select a region.
3. In the left-side navigation pane, click Cluster.
4. On the Cluster List page, find the cluster that you want to manage and click the cluster ID.
In the left-side navigation pane, click User Management.
On the User Management page, find the user and perform the following operations:
- Click Edit. In the dialog box that appears, you can modify the permissions and password of the user.
- Click Reset Password. In the dialog box that appears, you can reset a password for the user.
  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 in use.

Important

After a user is deleted, the user data is moved to a new directory for other users to access, for example, /home/testuser_del_2024****. A deleted user cannot be recovered. Even if you create another user that has the same name, the retained data is not reused.

Go to the Cluster Details page.
1. Log on to the E-HPC console.
2. In the left part of the top navigation bar, select a region.
3. In the left-side navigation pane, click Cluster.
4. On the Cluster List page, find the cluster that you want to manage and click the cluster ID.
In the left-side navigation pane, click User Management.
On the User Management page, find the user that you want to delete and click Delete in the Operation column.
In the message that appears, confirm the user information and click OK.
After the user is deleted, click the icon to refresh the user list.

References

After you create a user, you can use the user to log on to the cluster and submit jobs. For more information, see Connect to a cluster and Overview.