kubernetes/test/e2e/framework/size.go

// ResizeGroup resizes an instance group
func ResizeGroup(group string, size int32) error { … }

// GetGroupNodes returns a node name for the specified node group
func GetGroupNodes(group string) ([]string, error) { … }

// GroupSize returns the size of an instance group
func GroupSize(group string) (int, error) { … }

// WaitForGroupSize waits for node instance group reached the desired size
func WaitForGroupSize(group string, size int32) error { … }