5.3. Clusters and Permissions

5.3.1. Managing System Permissions for a Cluster

As the SuperUser, the system administrator manages all aspects of the Administration Portal. More specific administrative roles can be assigned to other users. These restricted administrator roles are useful for granting a user administrative privileges that limit them to a specific resource. For example, a DataCenterAdmin role has administrator privileges only for the assigned data center with the exception of the storage for that data center, and a ClusterAdmin has administrator privileges only for the assigned cluster.
A cluster administrator is a system administration role for a specific data center only. This is useful in data centers with multiple clusters, where each cluster requires a system administrator. The ClusterAdmin role is a hierarchical model: a user assigned the cluster administrator role for a cluster can manage all objects in the cluster. Use the Configure button in the header bar to assign a cluster administrator for all clusters in the environment.
The cluster administrator role permits the following actions:
  • Create and remove associated clusters.
  • Add and remove hosts, virtual machines, and pools associated with the cluster.
  • Edit user permissions for virtual machines associated with the cluster.

Note

You can only assign roles and permissions to existing users.
You can also change the system administrator of a cluster by removing the existing system administrator and adding the new system administrator.

5.3.2. Cluster Administrator Roles Explained

Cluster Permission Roles

The table below describes the administrator roles and privileges applicable to cluster administration.

Table 5.11. Red Hat Virtualization System Administrator Roles

Role Privileges Notes
ClusterAdmin Cluster Administrator
Can use, create, delete, manage all physical and virtual resources in a specific cluster, including hosts, templates and virtual machines. Can configure network properties within the cluster such as designating display networks, or marking a network as required or non-required.
However, a ClusterAdmin does not have permissions to attach or detach networks from a cluster, to do so NetworkAdmin permissions are required.
NetworkAdmin Network Administrator Can configure and manage the network of a particular cluster. A network administrator of a cluster inherits network permissions for virtual machines within the cluster as well.

5.3.3. Assigning an Administrator or User Role to a Resource

Assign administrator or user roles to resources to allow users to access or manage that resource.

Procedure 5.10. Assigning a Role to a Resource

  1. Use the resource tabs, tree mode, or the search function to find and select the resource in the results list.
  2. Click the Permissions tab in the details pane to list the assigned users, the user's role, and the inherited permissions for the selected resource.
  3. Click Add.
  4. Enter the name or user name of an existing user into the Search text box and click Go. Select a user from the resulting list of possible matches.
  5. Select a role from the Role to Assign: drop-down list.
  6. Click OK.
You have assigned a role to a user; the user now has the inherited permissions of that role enabled for that resource.

5.3.4. Removing an Administrator or User Role from a Resource

Remove an administrator or user role from a resource; the user loses the inherited permissions associated with the role for that resource.

Procedure 5.11. Removing a Role from a Resource

  1. Use the resource tabs, tree mode, or the search function to find and select the resource in the results list.
  2. Click the Permissions tab in the details pane to list the assigned users, the user's role, and the inherited permissions for the selected resource.
  3. Select the user to remove from the resource.
  4. Click Remove. The Remove Permission window opens to confirm permissions removal.
  5. Click OK.
You have removed the user's role, and the associated permissions, from the resource.