In Elastic High Performance Computing (E-HPC), users submit jobs to a cluster under a named identity. E-HPC supports two permission levels—regular users and administrators—so you can control who can manage cluster resources versus who can only run workloads. This topic describes how to create a user, change user permissions, reset a user password, and delete a user.
Prerequisites
Before you begin, ensure that you have:
An E-HPC cluster
Access to the E-HPC console
User groups
E-HPC organizes users into two groups that control what each user can do in the cluster.
| User group | Who it's for | What users can do |
|---|---|---|
| Default authority group | Regular users who only need to run workloads | Submit jobs, debug jobs |
| Sudo enabled group | Administrators who manage the cluster | Submit jobs, debug jobs, run sudo commands, install software, restart nodes |
Grant sudo permissions carefully. A user with sudo access who accidentally deletes an E-HPC software-stack module can disrupt the entire cluster.
Create a user
Log on to the E-HPC console.
In the top navigation bar, select a region.
In the left-side navigation pane, choose Resource Management > User.
On the User page, select your cluster from the Cluster drop-down list, then click Add New User.
In the Add New User dialog box, enter a username and password, select a user group, and click OK.
Change user permissions or reset a user password
After you create a user, you can change the user's group assignment or reset the password.
In the left-side navigation pane, choose Resource Management > User.
On the User page, select your cluster from the Cluster drop-down list.
On the Cluster User Management tab, find the target user and do one of the following:
Change permissions: Click Modify Authority, then select a new user group in the dialog box.
Reset the password: Click Reset Password, then enter a new password in the dialog box.
E-HPC does not support password recovery. If a password is lost or compromised, reset it using the steps above.
Delete a user
Delete users that are no longer needed.
In the left-side navigation pane, choose Resource Management > User.
On the User page, select your cluster from the Cluster drop-down list.
On the Cluster User Management tab, find the user you want to remove and click Delete in the Actions column.
Review the deletion details and click OK.
Understand what happens after deletion before proceeding:
| Item | After deletion |
|---|---|
| User account | Permanently deleted; cannot be recovered |
Data in /home directory | Retained and accessible to other users |
| Same-name user created later | Cannot access or reuse the original /home data |