NewNodesWatcher creates a new NodeWatcher.

NewPanicListener returns a listener that panics on any errors.

NewPullLogsAndPanicListener returns a listener that attempts to retrieve logs from the remote agent upon OnProcessTerminate invokation, and panics.

NodesWatcher makes it easy to monitor observable properties of M3DB ServiceNodes.

NodePredicate is a predicate on a M3DB ServiceNode.