New create a new instance of the MetricSet Part of new is also setting up the configuration by processing additional configuration entries if needed.

NewWatcher initializes the watcher client to provide a local state of pods from the cluster (filtered to the given host).

MetricSet type defines all fields of the MetricSet The event MetricSet listens to events from Kubernetes API server and streams them to the output.

Watcher is a controller that synchronizes Pods.