User Management

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Revision as of 09:32, 23 February 2012 by Dietmar (talk | contribs)
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Yellowpin.svg Note: Article about Proxmox VE 2.0 beta



Proxmox VE supports multiple authentication sources, e.g. Microsoft Active Directory, LDAP, Linux PAM or the integrated Proxmox VE authentication server.

By using the role based user- and permission management for all objects (VM´s, storages, nodes, etc.) granular access can be defined.

Authentication Realms

Proxmox VE stores all user attributes in /etc/pve/users.cfg. So there must be an entry for each user in that file. The password is not stored, instead you can use configure serveral realms to verify passwords.

Microsoft Active Directory



Linux PAM standard authentication

Proxmox VE authentication server

This is a unix like password store (/etc/pve/priv/shadow.cfg). Password are encrypted using the SHA-256 hash method. Users are allowed to change passwords.


A Proxmox VE user name consists of 2 parts: <userid>@<realm>. The login screen on the GUI shows them a separate items, but it is internally used as single string.

We store the following attribute for users (/etc/pve/user.cfg):

  • first name
  • last name
  • email address
  • expiration date
  • flag to enable/disable account
  • comment


The traditional unix superuser account is called 'root@pam'. All system mails are forwarded to the email assigned to that account.


Each user can be member of several groups. Groups are the preferred way to organize access permissions. You should always grant permission to groups instead of using individual users. That way you will get a much shorter access control list which is easier to handle.

Objects and Paths

Access permissions are assinged to objects, such as a virtual machines (/vms/{vmid}) or a storage (/storage/{storeid}). We use filesystem like paths to address those objects. Those paths forms a natural tree, and permissions can be inherited down that hierachy.





Video Tutorials

tbd: Proxmox VE Youtube channel