* RBAC objects are now stored in etcd in v1 format. After completing an upgrade to 1.9, RBAC objects (Roles, RoleBindings, ClusterRoles, ClusterRoleBindings) should be migrated to ensure all persisted objects are written in `v1` format, prior to `v1alpha1` support being removed in a future release. ([#52950](https://github.com/kubernetes/kubernetes/pull/52950), [@liggitt](https://github.com/liggitt))...

configurations must be changed to use the new API.  Clients may request alternate representations of normal Kubernetes objects by passing an `Accept` header like `application/json;as=Table;g=meta.k8s.io;v=v1beta1` or `application/json;as=PartialObjectMetadata;g=meta.k8s.io;v1=v1beta1`.  Older servers will ignore this representation or return an error if it is not available.  Clients may request fallback to the normal object by adding a non-qualified mime-type to their `Accept` header like `application/json`...

- Added warnings to the Services API. Kubernetes now warns for Services in the case of:
  - IPv4 addresses with leading zeros
  - IPv6 address in non-canonical format (RFC 5952) ([#114505](https://github.com/kubernetes/kubernetes/pull/114505), [@aojea](https://github.com/aojea))

* Node's providerID is following Azure resource ID format now when useInstanceMetadata is enabled ([#59539](https://github.com/kubernetes/kubernetes/pull/59539), [@feiskyer](https://github.com/feiskyer))



# v1.8.8

- The underlying format of the `CPUManager` state file has changed. Upgrades should be seamless, but any third-party tools that rely on reading the previous format need to be updated. ([#84462](https://github.com/kubernetes/kubernetes/pull/84462), [@klueska](https://github.com/klueska)) [SIG Node and Testing]

- Fix a panic when using invalid output format in kubectl create secret command ([#107345](https://github.com/kubernetes/kubernetes/pull/107345), [@rikatz](https://github.com/rikatz)) [SIG CLI]

# Changes

A complete changelog for the release notes is now hosted in a customizable format at [relnotes.k8s.io](https://relnotes.k8s.io). Check it out and please give us your feedback!

## What’s New (Major Themes)

### Cloud Provider Labels reach General Availability

  - support for the `v1alpha3` configuration file format is deprecated and will be removed in 1.14. Use `kubeadm config migrate` to migrate `v1alpha3` configuration files to `v1beta1`, which provides improvements in image repository management, addons configuration, and other areas. The documentation for...

* kubectl will list all allowed print formats when an invalid format is passed. ([#64371](https://github.com/kubernetes/kubernetes/pull/64371), [@CaoShuFeng](https://github.com/CaoShuFeng))

- Indexed Job pods now have the pod completion index set as a pod label. ([#118883](https://github.com/kubernetes/kubernetes/pull/118883), [@danielvegamyhre](https://github.com/danielvegamyhre)) [SIG Apps]
- Kube-proxy: added `--logging-format` flag to support structured logging. ([#117800](https://github.com/kubernetes/kubernetes/pull/117800), [@cyclinder](https://github.com/cyclinder))