ubernetes/kubernetes/pull/59883), [@kow3ns](https://github.com/kow3ns))

* MountPropagation feature is now beta. As a consequence, all volume mounts in containers are now `rslave` on Linux by default. To make this default work in all Linux environments the entire mount tree should be marked as shareable, e.g. via `mount --make-rshared /`. All Linux distributions that use systemd already have the root directory mounted as rshared and hence they need not do anything. In Linux environments...

### (No, really, you MUST read this before you upgrade)

- Fixed missing delete events on informer re-lists to ensure all delete events were correctly emitted and using the latest known object state, so that all event handlers and stores always reflect the actual apiserver state as best as possible ([#11...

*   [stable] [cri-o](https://github.com/kubernetes-incubator/cri-o): CRI implementation for OCI-based runtimes is now v1.9. [[@mrunalp](https://github.com/mrunalp)]
    *   Pass all the Kubernetes 1.9 end-to-end test suites and now gating PRs as well
    *   Pass all the CRI validation tests
    *   Release has been focused on bug fixes, stability and performance with runc and Clear Containers
    *   Minikube integration

- Added `cronjobs.batch` to "all", so that `kubectl get all` returns them.

- Added flag `--include-uninitialized` to `kubectl annotate`, `apply`, `edit-last-applied`,
  `delete`, `describe`, `edit`, `get`, `label,` and `set`. `--include-uninitialized=true` makes
  kubectl commands apply to uninitialized objects, which by default are ignored
  if the names of the objects are not provided. `--all` also makes kubectl

- The Image Locality priority function of the scheduler has been improved and is now enabled by default. With this feature enabled, nodes that have all or a partial set of images required for running a pod are preferred over other nodes, which improves pod start-up time.

## Changelog since v1.18.0-alpha.2

### Deprecation

- Remove all the generators from kubectl run. It will now only create pods. Additionally, deprecates all the flags that are not relevant anymore. ([#87077](https://github.com/kubernetes/kubernetes/pull/87077), [@soltysh](https://github.com/soltysh)) [SIG Architecture, SIG CLI, and SIG Testing]

- Kubeadm: the limitation that the 'ignorePreflightErrors' field can not be set to 'all' in kubeadm config file has been removed ([#119351](https://github.com/kubernetes/kubernetes/pull/119351), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

- kube-apiserver: the `--runtime-config` flag now supports an `api/beta=false` value which disables all built-in REST API versions matching `v[0-9]+beta[0-9]+`. ([#84304](https://github.com/kubernetes/kubernetes/pull/84304), [@liggitt](https://github.com/liggitt))

feature, you might need to take some action immediately after upgrading. In multi-tenant clusters where not all users are trusted, you are advised to create appropriate quotas for two default priority classes, system-cluster-critical and system-node-critical, which are added to clusters by default. `ResourceQuota` should be created to limit users from creating Pods at these priorities if not all users of your cluster are trusted. We do not advise disabling this feature because critical system Pods rely...