DetermineNodeName is called to determine the node name to use for this instance of calico/node.

GetExitFunction return current exit function.

RemoveShutdownTimestampFile removes shutdown timestamp file.

SaveShutdownTimestamp saves timestamp to shutdown timestamp file.

SetExitFunction set exitFunction to be called.

Set Kubernetes NodeNetworkUnavailable to false when starting https://kubernetes.io/docs/concepts/architecture/nodes/#condition.

Terminate prints a terminate message and exists with status 1.

writeNodeConfig writes out the this node's configuration to disk for use by other components.