group, a significant subset of Kubelet configuration can now be [configured via a versioned config file](https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/). Kubernetes v1.10 adds alpha support for the ability to [configure whether containers in a pod should share a single process namespace](https://github.com/kubernetes/enhancements/issues/495), and the CRI has been upgraded to v1alpha2, which adds [support for Windows Container Configuration](https://github.com/kubernetes...

For more information, see [#53109](https://github.com/kubernetes/kubernetes/issues/53109).

## Deprecations

- Shared informers now correctly propagate whether they are synced or not. Individual informer handlers may now check if they are synced or not (new `HasSynced` method). Library support is added to assist controllers in tracking whether their own work is completed for items in the initial list (`AsyncTracker`). ([#113985](https://github.com/kubernetes/kubernetes/pull/113985), [@lavalamp]...

#### **IPVS**

*   You can now use the --cleanup-ipvs flag to tell kube-proxy whether to flush all existing ipvs rules in on startup ([#56036](https://github.com/kubernetes/kubernetes/pull/56036),[ @m1093782566](https://github.com/m1093782566))

- CRI now supports a "runtime_handler" field for RunPodSandboxRequest, used for...

- This PR sets the --cluster-dns flag value to kube-dns service IP whether or not NodeLocal DNSCache is enabled. NodeLocal DNSCache will listen on both the link-local as well as the service IP. ([#84383](https://github.com/kubernetes/kubernetes/pull/84383), [@prameshj](https://github.com/prameshj))

- `wait.PollUntilContextTimeout` function, if immediate is true, the condition
  will be invoked before waiting and guarantees that the condition is invoked at
  least once, regardless of whether the context has been cancelled. ([#118686](https://github.com/kubernetes/kubernetes/pull/118686), [@aojea](https://github.com/aojea))

### Other (Cleanup or Flake)

* The Kubelet now exports metrics that report the assigned (`node_config_assigned`), last-known-good (`node_config_last_known_good`), and active (`node_config_active`) config sources, and a metric indicating whether the node is experiencing a config-related error (`node_config_error`). The config source metrics always report the value `1`, and carry the `node_config_name`, `node_config_uid`, `node_config_resource_version`, and `node_config_kubelet_key labels`,...

- Added support for setting controller-manager log level online. ([#104571](https://github.com/kubernetes/kubernetes/pull/104571), [@h4ghhh](https://github.com/h4ghhh))

- Introduces a new GCE specific cluster creation variable KUBE_PROXY_DISABLE. When set to true, this will skip over the creation of kube-proxy (whether the daemonset or static pod). This can be used to control the lifecycle of kube-proxy separately from the lifecycle of the nodes. ([#91977](https://github.com/kubernetes/kubernetes/pull/91977), [@varunmar](https://github.com/varunmar)) [SIG Cloud...