- Remove storage metrics `storage_operation_errors_total`, since we already have `storage_operation_status_count`.And add new field `status` for `storage_operation_duration_seconds`, so that we can know about all status storage operation latency. ([#98332](https://github.com/kubernetes/kubernetes/pull/98332), [@JornShen](https://github.com/JornShen)) [SIG Instrumentation and Storage]

### OpenStack

    * If your config files contains fields with wrong case, the config files will be now invalid.
* GCE: Fixes operation polling to adhere to the specified interval. Furthermore, operation errors are now returned instead of ignored. ([#64630](https://github.com/kubernetes/kubernetes/pull/64630), [@nicksardo](https://github.com/nicksardo))

on average) and rapid updates to pod configuration should take effect sooner.
  
  A new metric `kubelet_known_pods` has been added at ALPHA stability to report the number of pods a Kubelet is tracking in a number of internal states.  Operators may use the metrics to track an excess of pods in the orphaned state that may not be completing. ([#113145](https://github.com/kubernetes/kubernetes/pull/113145), [@smarterclayton](https://github.com/smarterclayton)) [SIG API Machinery, Auth, Cloud...

- [Namespaced Brokers](https://svc-cat.io/docs/namespaced-broker-resources/), which enable operators to install a broker into a namespace instead of the cluster level, reached GA.
- The [Service Plan Defaults](https://svc-cat.io/docs/service-plan-defaults/) feature is in alpha and is under active development. This feature gives operators the ability to define defaults for when someone provisions a service.

- Kubenet: added HostPort IPv6 support.  HostPortManager: operates only with one IP family, failing if receives port mapping entries with different IP families.  HostPortSyncer: operates only with one IP family, skipping portmap entries with different IP families ([#80854](https://github.com/kubernetes/kubernetes/pull/80854), [@aojea](https://github.com/aojea))

* Fix clustered datastore name to be absolute. ([#54438](https://github.com/kubernetes/kubernetes/pull/54438), [@pshahzeb](https://github.com/pshahzeb))
* Fix `kubeadm upgrade plan` for offline operation: ignore errors when trying to fetch latest versions from dl.k8s.io ([#54016](https://github.com/kubernetes/kubernetes/pull/54016), [@praseodym](https://github.com/praseodym))

- Apiserver adds two new metrics `etcd_requests_total` and `etcd_request_errors_total` that allow users to monitor requests to etcd storage, split by operation and resource type. ([#117222](https://github.com/kubernetes/kubernetes/pull/117222), [@iyear](https://github.com/iyear)) [SIG API Machinery]

- Reduce event spam during a volume operation error. ([#89796](https://github.com/kubernetes/kubernetes/pull/89796), [@msau42](https://github.com/msau42)) [SIG Storage]


# v1.18.0

[Documentation](https://docs.k8s.io)

## Downloads for v1.18.0

* GCE: Fixed operation polling to adhere to the specified interval. Furthermore, operation errors are now returned instead of ignored. ([#64630](https://github.com/kubernetes/kubernetes/pull/64630), [@nicksardo](https://github.com/nicksardo))