What is the minimal permission a user needs to start and attach to a cluster, assuming they have no permissions?

To start and attach to a cluster, a user requires the appropriate permissions that directly influence their ability to interact with the cluster. "Can Restart" privileges provide the fundamental access needed for a user to manage the cluster's operational state. This permission allows them to start the cluster if it is not currently running, as well as attach to it once it is operational.

In the context of managing clusters, this level of permission is the most minimal necessary. Users without any permissions would not be able to engage with the cluster until granted some form of access. Thus, having the "Can Restart" privilege specifically allows for both starting and attaching to the cluster, embodying the essential requirements without necessitating broader permissions that would be needed for full management capabilities.

The other options involve either more extensive permissions or combined permissions, which are unnecessary for the basic functionality of starting and attaching to a cluster. This highlights the specific focus of the "Can Restart" privilege as the minimal requirement for the task at hand.