- kubeadm now attempts to detect an installed CRI by its usual domain socket, so that `--cri-socket` can be omitted from the command line if Docker is not used and there is a single CRI installed. ([#69366](https://github.com/kubernetes/kubernetes/pull/69366), [@rosti](https://github.com/rosti))

- Bug fix: Windows Kubelet nodes will now correctly search the default location for Docker credentials (`%USERPROFILE%\.docker\config.json`) when pulling images from a private registry. (https://kubernetes.io/docs/concepts/containers/images/#configuring-nodes-to-authenticate-to-a-private-registry) ([#78528](https://github.com/kubernetes/kubernetes/pull/78528),...

- The  command line option  --cri-socket-path of the kubeadm subcommand "kubeadm config images pull" has been renamed to --cri-socket to be consistent with the rest of kubeadm subcommands.

* kubeadm now detects the Docker cgroup driver and starts the kubelet with the matching driver. This eliminates a common error experienced by new users in when the Docker cgroup driver is not the same as the one set for the kubelet due to different Linux distributions setting different cgroup drivers for Docker, making it hard to start the kubelet properly.

## Dependencies

### Added
_Nothing has changed._

### Changed
- k8s.io/kube-openapi: bf4fb3b → 61e04a5

### Removed
- github.com/docker/libnetwork: [c8a5fca](https://github.com/docker/libnetwork/tree/c8a5fca)



# v1.18.2

[Documentation](https://docs.k8s.io)

## Downloads for v1.18.2

filename | sha512 hash
-------- | -----------

 - Kubeadm: remove the automatic detection and matching of cgroup drivers for Docker. For new clusters if you have not configured the cgroup driver explicitly you might get a failure in the `kubelet` on driver mismatch (kubeadm clusters should be using the `systemd` driver). Also remove the `IsDockerSystemdCheck` preflight check (warning) that checks if the Docker cgroup driver is set to `systemd`. Ideally such detection / coordination should be on the side of CRI implementers...

- github.com/dgrijalva/jwt-go: [01aeca5 → v3.2.0+incompatible](https://github.com/dgrijalva/jwt-go/compare/01aeca5...v3.2.0)
- github.com/docker/distribution: [edc3ab2 → v2.7.1+incompatible](https://github.com/docker/distribution/compare/edc3ab2...v2.7.1)
- github.com/emicklei/go-restful: [ff4f55a → v2.9.5+incompatible](https://github.com/emicklei/go-restful/compare/ff4f55a...v2.9.5)

- github.com/coredns/corefile-migration: [v1.0.12 → v1.0.14](https://github.com/coredns/corefile-migration/compare/v1.0.12...v1.0.14)
- github.com/docker/docker: [v20.10.2+incompatible → v20.10.7+incompatible](https://github.com/docker/docker/compare/v20.10.2...v20.10.7)
- github.com/envoyproxy/go-control-plane: [668b12f → 63b5d3c](https://github.com/envoyproxy/go-control-plane/compare/668b12f...63b5d3c)

- github.com/daviddengcn/go-colortext: [511bcaf → v1.0.0](https://github.com/daviddengcn/go-colortext/compare/511bcaf...v1.0.0)
- github.com/docker/docker: [v20.10.12+incompatible → v20.10.17+incompatible](https://github.com/docker/docker/compare/v20.10.12...v20.10.17)
- github.com/envoyproxy/go-control-plane: [63b5d3c → 49ff273](https://github.com/envoyproxy/go-control-plane/compare/63b5d3c...49ff273)

 */
@GwtCompatible
public abstract class Ticker {
  /** Constructor for use by subclasses. */
  protected Ticker() {}

  /** Returns the number of nanoseconds elapsed since this ticker's fixed point of reference. */
  public abstract long read();

  /**
   * A ticker that reads the current time using {@link System#nanoTime}.
   *
   * @since 10.0
   */
  public static Ticker systemTicker() {
    return SYSTEM_TICKER;
  }