nova:tldr:ba002

The command "nova stop ${server}" is used in the OpenStack cloud computing platform's command-line interface called "nova".

Here's an explanation of the command and its components:

• "nova" refers to the OpenStack Compute service, responsible for managing and provisioning virtual machines (VMs).
• "stop" is a subcommand or action within the "nova" command. It specifies that the action to be performed is stopping or shutting down a VM instance.
• "${server}" is a placeholder or variable that needs to be replaced with the actual name or ID of the server (VM) that you want to stop. This variable allows you to provide the specific server name or ID as an argument to the command.

Using this command, the OpenStack "nova" command-line interface will send a request to the OpenStack Compute service to stop the specified VM, which effectively shuts it down.