What is the main server known as in Puppet architecture?

In Puppet architecture, the main server is referred to as the Puppet Master. The Puppet Master acts as a centralized server that manages the configuration of nodes in a network through Puppet code. It stores all the configurations and manifests that define the desired state of the systems, making it essential for ensuring consistent and automated configuration management across multiple nodes.

When a Puppet Agent (the client running on individual nodes) communicates with the Puppet Master, it requests the configurations and updates for its designated system. The Puppet Master compiles the information and sends the appropriate configurations back to the agents, which then apply those configurations to achieve the specified state. This centralization is crucial for effective automation and management within an IT environment.

The other terms in the answer choices relate to different parts of the Puppet ecosystem but are not designated as the main server. The Puppet Client and Puppet Agent refer to the software that runs on the nodes themselves, allowing them to receive configurations from the Puppet Master. The term Puppet Controller, while it may suggest a coordinating function, is not a standard term used in Puppet architecture. Hence, the term Puppet Master accurately describes the key server in Puppet's design.