In one exemplary embodiment, a terminal user-interface (UI) client is configured to accept a user-scripted command from a user. The user-scripted command includes an operating system command or a user-customized command. The user-scripted command is passed to a distributed server management platform. A node tag input by a user is accepted. The node tag identifies at least one agent node in a server in the cloud-computing platform to execute the user-scripted command. A distributed server management platform that passes the user-scripted command to a group broker of an agent group comprising the agent node identified by the node tag, and to pass a command result to the terminal UI. A group broker to pass the user-scripted command to the agent node, and to pass a command result from the agent node to the distributed server management platform.