- [Node Binaries](#node-binaries-7)
  - [Changelog since v1.21.6](#changelog-since-v1216)
  - [Changes by Kind](#changes-by-kind-6)
    - [Feature](#feature-4)
    - [Failing Test](#failing-test)
    - [Bug or Regression](#bug-or-regression-6)
  - [Dependencies](#dependencies-7)
    - [Added](#added-7)
    - [Changed](#changed-7)
    - [Removed](#removed-7)
- [v1.21.6](#v1216)

    - [Container Images](#container-images-6)
  - [Changelog since v1.27.6](#changelog-since-v1276)
  - [Changes by Kind](#changes-by-kind-6)
    - [Feature](#feature-6)
    - [Failing Test](#failing-test)
    - [Bug or Regression](#bug-or-regression-6)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake-3)
  - [Dependencies](#dependencies-6)
    - [Added](#added-6)
    - [Changed](#changed-6)

    *   Update CRI to kubernetes v1.9.
    *   Bug fixes in validation test suites.
*   [beta] [cri-containerd](https://github.com/kubernetes-incubator/cri-containerd): CRI implementation for containerd is now v1.0.0-beta.0, [[@Random-Liu](https://github.com/Random-Liu)]
    *   This release supports Kubernetes 1.9+ and containerd v1.0.0+.
    *   Pass all Kubernetes 1.9 e2e test, node e2e test and CRI validation tests.

### Other notable changes

    - [Container Images](#container-images-6)
  - [Changelog since v1.28.2](#changelog-since-v1282)
  - [Changes by Kind](#changes-by-kind-6)
    - [Feature](#feature-6)
    - [Failing Test](#failing-test)
    - [Bug or Regression](#bug-or-regression-6)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake-3)
  - [Dependencies](#dependencies-6)
    - [Added](#added-6)
    - [Changed](#changed-6)

- The deprecated mondo `kubernetes-test` tarball is no longer built. Users running Kubernetes e2e tests should use the `kubernetes-test-portable` and `kubernetes-test-{OS}-{ARCH}` tarballs instead. ([#83093](https://github.com/kubernetes/kubernetes/pull/83093), [@ixdy](https://github.com/ixdy))

### Scheduling

    - [Server binaries](#server-binaries-3)
    - [Node binaries](#node-binaries-3)
  - [Changelog since v1.18.16](#changelog-since-v11816)
  - [Changes by Kind](#changes-by-kind-3)
    - [Failing Test](#failing-test)
    - [Bug or Regression](#bug-or-regression-3)
  - [Dependencies](#dependencies-3)
    - [Added](#added-3)
    - [Changed](#changed-3)
    - [Removed](#removed-3)
- [v1.18.16](#v11816)

   - In version 1.8, enable this behavior by setting the
     `--horizontal-pod-autoscaler-use-rest-clients` flag to `true`.

   - In version 1.9, this behavior will be enabled by default, and must be explicitly
     disabled by setting the `--horizontal-pod-autoscaler-use-rest-clients` flag to `false`.

### Cluster Lifecycle

* [action required] The `MasterConfiguration` kind in the kubeadm v1alpha2 API has been renamed `InitConfiguration`...

* test/e2e/e2e.test: ([#69105](https://github.com/kubernetes/kubernetes/pull/69105), [@pohly](https://github.com/pohly))
   * -viper-config can be used to set also the options defined by command line flags
   * the default config file is "e2e.yaml/toml/json/..." and the test starts when no such config is found (as before) but if -viper-config is used, the config file must exist