const (
    // LabelOS is a label to indicate the operating system of the node.
    // The OS labels are promoted to GA in 1.14. kubelet applies both beta
    // and GA labels to ensure backward compatibility.
    // TODO: stop applying the beta OS labels in Kubernetes 1.18.
    LabelOS = "beta.kubernetes.io/os"
    // LabelArch is a label to indicate the architecture of the node.
    // The Arch labels are promoted to GA in 1.14. kubelet applies both beta
    // and GA labels to ensure backward compatibility.
    // TODO: stop applying the beta Arch labels in Kubernetes 1.18.
    LabelArch = "beta.kubernetes.io/arch"
)

const (
    // AnnotationProvidedIPAddr is a node IP annotation set by the "external" cloud provider.
    // When kubelet is started with the "external" cloud provider, then
    // it sets this annotation on the node to denote an ip address set from the
    // cmd line flag (--node-ip). This ip is verified with the cloudprovider as valid by
    // the cloud-controller-manager
    AnnotationProvidedIPAddr = "alpha.kubernetes.io/provided-node-ip"
)