Presumably, you have already created an administrative user, but MAAS can also have regular users (who log in to the interface or use the CLI). What users you create depends on how you intend to use MAAS. An administrator can manage all aspects of MAAS, whereas a non-administrator user can perform a subset of tasks on machines they allocate and deploy. MAAS limits the details a non-admin user can view, such as nodes allocated to other users. Also, non-admin users cannot access the global settings page in the web UI, nor any of the equivalent API calls from the command line.
Additionally, in order for a user to log into a MAAS-deployed machine that user must have their public SSH key installed on it. This article explains how to create users and add their public SSH keys to MAAS, so that every deployed machine will automatically have that key installed. This article will help you learn:
How to add an SSH key for a user
Before a user can deploy a machine, they must import at least one public SSH key into MAAS. This key allows the user to access the deployed machine with the corresponding private key, which the user must possess. See Public key authentication (ssh.com)↗ if you’re not familiar with SSH keys.
Assuming a public key exists in /home/ubuntu/.ssh/id_rsa.pub - add a key with the following command:
ubuntu@maas:~$ maas $PROFILE sshkeys create key="$(cat /home/ubuntu/.ssh/id_rsa.pub)"
Success.
NOTE: The user normally imports their initial SSH key on the first login to the web UI.