What are two supported methods to add a new Contrail compute node using Contrail Command? (Choose two.)
From the Web UI, add a new server and assign it as a compute node to the existing cluster.
From the CLI on the Contrail Command server, edit the instances.yml file and add the new node information.
From the CLI on the Contrail Command server, edit the command_servers.yml file and add the new node information.
From the CLI on the Contrail Command server, edit the testbed.py file and add the new node information.
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