DockerAPIVersion is a default API version used when talking to Docker runtime.

EtcdImage points to a default Docker image, which will be used for running etcd.

HAProxyImage is a default container image for APILoadBalancer.

KubeAPIServerImage points to a default Docker image, which will be used for running kube-apiserver.

KubeControllerManagerImage points to a default Docker image, which will be used for running kube-apiserver.

KubeletImage points to a default Docker image, which will be used for running kube-apiserver.

KubeSchedulerImage points to a default Docker image, which will be used for running kube-apiserver.

VolumePluginDir is a default flex volume plugin directory configured for kubelet and kube-controller-manager.