### SIG Cluster Lifecycle

  * kubeadm: The `:Etcd` struct has been refactored in the v1alpha2 API. All the options now reside under either `.Etcd.Local` or `.Etcd.External`. Automatic conversions from the v1alpha1 API are supported. ([#64066](https://github.com/kubernetes/kubernetes/pull/64066), [@luxas](https://github.com/luxas))

- The check for unsupported plugins during volume resize has been moved from the admission controller to the two controllers that handle volume resize. ([#66780](https://github.com/kubernetes/kubernetes/pull/66780), [@kangarlou](https://github.com/kangarlou))

- Fix: azure disk resize error if source does not exist ([#93011](https://github.com/kubernetes/kubernetes/pull/93011), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]
- Fix: detach azure disk broken on Azure Stack ([#94885](https://github.com/kubernetes/kubernetes/pull/94885), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]

## Changelog since v1.16.3

### Other notable changes

* Fixed issue with addon-resizer using deprecated extensions APIs ([#85793](https://github.com/kubernetes/kubernetes/pull/85793), [@bskiba](https://github.com/bskiba))

## Changelog since v1.17.13

## Changes by Kind

### Bug or Regression

- An issues preventing volume expand controller to annotate the PVC with `volume.kubernetes.io/storage-resizer` when the PVC StorageClass is already updated to the out-of-tree provisioner is now fixed. ([#94489](https://github.com/kubernetes/kubernetes/pull/94489), [@ialidzhikov](https://github.com/ialidzhikov)) [SIG API Machinery, Apps and Storage]

- Added functionality to enable br_netfilter and ip_forward for debian packages to improve kubeadm support for CRI runtime besides Docker.  ([#70152](https://github.com/kubernetes/kubernetes/pull/70152), [@ashwanikhemani](https://github.com/ashwanikhemani))

## Changelog since v1.18.10

## Changes by Kind

### Bug or Regression

- An issues preventing volume expand controller to annotate the PVC with `volume.kubernetes.io/storage-resizer` when the PVC StorageClass is already updated to the out-of-tree provisioner is now fixed. ([#94489](https://github.com/kubernetes/kubernetes/pull/94489), [@ialidzhikov](https://github.com/ialidzhikov)) [SIG API Machinery, Apps and Storage]

// https://www.iana.org/domains/root/db/realtor.html
realtor

// realty : Waterford Limited
// https://www.iana.org/domains/root/db/realty.html
realty

// recipes : Binky Moon, LLC
// https://www.iana.org/domains/root/db/recipes.html
recipes

// red : Identity Digital Limited
// https://www.iana.org/domains/root/db/red.html
red

// redstone : Redstone Haute Couture Co., Ltd.

- `PodSpec.Container.Resources` became mutable for CPU and memory resource types.
  - `PodSpec.Container.ResizePolicy` (new object) gives users control over how their containers are resized.
  - `PodStatus.Resize` status describes the state of a requested Pod resize.
  - `PodStatus.ResourcesAllocated` describes node resources allocated to Pod.
  - `PodStatus.Resources` describes node resources applied to running containers by CRI.

* Calico has been updated to v2.5, RBAC added, and is now automatically scaled when GCE clusters are resized. ([#51237](https://github.com/kubernetes/kubernetes/pull/51237), [@gunjan5](https://github.com/gunjan5))