channel is closed and empty.
</p>


<h3 id="Conversions">Conversions</h3>

<p>
A conversion changes the <a href="#Types">type</a> of an expression
to the type specified by the conversion.
A conversion may appear literally in the source, or it may be <i>implied</i>
by the context in which an expression appears.
</p>

<p>
An <i>explicit</i> conversion is an expression of the form <code>T(x)</code>

  - `spec.additionalPrinterColumns` is removed in v1; use `spec.versions[*].additionalPrinterColumns` instead
  - `spec.conversion.webhookClientConfig` is moved to `spec.conversion.webhook.clientConfig` in v1
  - `spec.conversion.conversionReviewVersions` is moved to `spec.conversion.webhook.conversionReviewVersions` in v1
  - `spec.versions[*].schema.openAPIV3Schema` is now required when creating v1 CustomResourceDefinitions

- Fixes conversion error for HorizontalPodAutoscaler objects with invalid annotations ([#89967](https://github.com/kubernetes/kubernetes/pull/89967), [@liggitt](https://github.com/liggitt)) [SIG Autoscaling]

- Fixes conversion error for HorizontalPodAutoscaler objects with invalid annotations ([#89969](https://github.com/kubernetes/kubernetes/pull/89969), [@liggitt](https://github.com/liggitt)) [SIG Autoscaling]

* Ensure expected load balancer is selected for Azure ([#62450](https://github.com/kubernetes/kubernetes/pull/62450), [@feiskyer](https://github.com/feiskyer))
* Fix error message regarding conversion of `v1.ListOptions` to `samplecontroller.k8s.io/v1alpha1`. ([#57243](https://github.com/kubernetes/kubernetes/pull/57243), [@munnerz](https://github.com/munnerz))

- Fix scheduler crash when removing node before its pods ([#89908](https://github.com/kubernetes/kubernetes/pull/89908), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]
- Fixes conversion error for HorizontalPodAutoscaler objects with invalid annotations ([#89965](https://github.com/kubernetes/kubernetes/pull/89965), [@liggitt](https://github.com/liggitt)) [SIG Autoscaling]

* Change ImageGCManage to consume ImageFS stats from StatsProvider ([#53094](https://github.com/kubernetes/kubernetes/pull/53094), [@yguo0905](https://github.com/yguo0905))
* Fixes an issue with `kubectl set` commands encountering conversion errors for ReplicaSet and DaemonSet objects ([#53158](https://github.com/kubernetes/kubernetes/pull/53158), [@liggitt](https://github.com/liggitt))


# v1.8.0

- Fixed issue where `kubectl-convert` would fail when encountering resources that could not be converted to the specified api version. New behavior is to warn the user of the failed conversions and continue to convert the remaining resources. ([#117002](https://github.com/kubernetes/kubernetes/pull/117002), [@gxwilkerson33](https://github.com/gxwilkerson33))

does not support protobuf encoding, if you roll back to 1.5 after upgrading to
protobuf you will be forced to restore from backup, and you will lose any changes
since you converted to protobuf.  After conversion to protobuf, you should
validate the correct operation of your cluster thoroughly before returning it
to normal operation.

Backups are always a good precaution, particularly around upgrades, but this

### 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))