*   An example CRD controller has been added, at [github.com/kubernetes/sample-controller](https://github.com/kubernetes/sample-controller). ([#52753](https://github.com/kubernetes/kubernetes/pull/52753),[ @munnerz](https://github.com/munnerz))

- Migrated the “sample-controller” controller to use [contextual logging](https://k8s.io/docs/concepts/cluster-administration/system-logs/#contextual-logging). ([#113879](https://github.com/kubernetes/kubernetes/pull/113879), [@pchan](https://github.com/pchan)) [SIG API...

    * action required: Cloud providers other than GCE might want to update their deployments or sample yaml files to reuse the role created via add-on.

### Other notable changes

- The NodeShutdown taint is now supported for Azure. ([#68033](https://github.com/kubernetes/kubernetes/pull/68033), [@yastij](https://github.com/yastij))

### SIG CLI

- Kube-controller-manager: Fixes bug setting headless service labels on endpoints ([#85361](https://github.com/kubernetes/kubernetes/pull/85361), [@liggitt](https://github.com/liggitt))
- People can see the right log and note. ([#84637](https://github.com/kubernetes/kubernetes/pull/84637), [@zhipengzuo](https://github.com/zhipengzuo))

- The sample-apiserver aggregated conformance test has updated to use the Kubernetes v1.17.0 sample apiserver ([#84735](https://github.com/kubernetes/kubernetes/pull/84735), [@liggitt](https://github.com/liggitt)) [SIG API Machinery, Architecture, CLI and Testing]

### SIG Storage

[SIG Storage][] is responsible for storage and volume plugin components.

For the 1.8 release, SIG Storage extended the Kubernetes storage API. In addition to providing simple
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

CSI was first introduction as alpha in Kubernetes v1.9 and moved to beta in Kubernetes v1.10.

You can find a list of sample and production drivers in the [CSI Documentation](https://kubernetes.io/docs/concepts/storage/volumes/#csi).

* A cluster-autoscaler ClusterRole is added to cover only the functionality required by Cluster Autoscaler and avoid abusing system:cluster-admin role. Cloud providers other than GCE might want to update their deployments or sample yaml files to reuse the role created via add-on. ([#64503](https://github.com/kubernetes/kubernetes/pull/64503), [@kgolab](https://github.com/kgolab))

### SIG Azure

- Kubelet could be run with no Azure identity without subscriptionId configured now.
  A sample cloud provider configure is: '{"vmType": "vmss", "useInstanceMetadata": true}'. ([#81500](https://github.com/kubernetes/kubernetes/pull/81500), [@feiskyer](https://github.com/feiskyer))