KEPs or supporting documentation, please reference a specific commit and avoid
linking directly to the master branch. This ensures that links reference a
specific point in time, rather than a document that may change over time.

See here for guidance on getting permanent links to files: https://help.github.com/en/articles/getting-permanent-links-to-files

Please use the following format for linking documentation:
- [KEP]: <link>

### SIG CLI

- A new `kubelet_preemptions` metric is reported from Kubelets to track the number of preemptions occurring over time, and which resource is triggering those preemptions. ([#84120](https://github.com/kubernetes/kubernetes/pull/84120), [@smarterclayton](https://github.com/smarterclayton))

SIG-OpenStack development was primarily focused on fixing bugs and improving feature parity with OpenStack resources. New features were primarily limited to the external provider in an effort to drive adoption of the OpenStack external provider over the in-tree provider.

In-tree bug fixes and improvements included:
- Fix load balancer status without VIP.
- Fix filtering of server status.
- Fix resizing PVC of Cinder volume.

As far as Sig Instrumentation, the major change in Kubernetes 1.11 is the deprecation of Heapster as part of ongoing efforts to move to the new Kubernetes monitoring model. Clusters still using Heapster for autoscaling should be migrated over to metrics-server and the custom metrics API. See the deprecation section for more information.

### SIG Network

- CPU limits are now respected for Windows containers. If a node is over-provisioned, no weighting is used, only limits are respected. ([#86101](https://github.com/kubernetes/kubernetes/pull/86101), [@PatrickLang](https://github.com/PatrickLang)) [SIG Node, Testing and Windows]

volume availability, the API now enables volume resizing and snapshotting. These features are in alpha.
The SIG also focused on providing more control over storage: the ability to set requests and
limits on ephemeral storage, the ability to specify mount options, more metrics, and improvements to Flex driver deployments.

- Fixed component status calling etcd health endpoint over http which exposed kubernetes to the risk of complete watch starvation and is inconsistent with other etcd probing done by `kube-apiserver`. ([#118460](https://github.com/kubernetes/kubernetes/pull/118460), [@serathius](https://github.com/serathius))...

forwarded to kubelet static pods to control pull policy for etcd and control plane images. This option allows for precise image pull policy specification for master nodes and thus for more tight control over images. It is useful in CI environments and in environments, where the user has total control over master VM templates (thus, the master VM templates can be preloaded with the required Docker images for the control plane services). ([#58960](https://github.com/kubernetes/kubernetes/pull/58960), [...

### Bug or Regression

- Added jitter factor to lease controller that better smears load on kube-apiserver over time. ([#101652](https://github.com/kubernetes/kubernetes/pull/101652), [@marseel](https://github.com/marseel)) [SIG API Machinery and Scalability]