### Scheduling

  - Opaque Integer Resources (OIRs) are deprecated and will be removed in
    version 1.9. Extended Resources (ERs) are a drop-in replacement for OIRs. You can use
    any domain name prefix outside of the `kubernetes.io/` domain instead of the
    `pod.alpha.kubernetes.io/opaque-int-resource-` prefix.

## Notable Features

### Workloads API (apps/v1beta2)

*   TensorBoard disables all runs by default if there are more than 40 runs.
*   Removed old doc generator code.
*   GCS file system integration now supports domain buckets, e.g
    gs://bucket.domain.com/path.
*   Add `tf.summary.text` for outputting text to TensorBoard.
*   The "run" command of tfdbg's command-line interface now supports filtering

- Azure nodes with availability zone will now have label `failure-domain.beta.kubernetes.io/zone=<region>-<zoneID>`. ([#66242](https://github.com/kubernetes/kubernetes/pull/66242), [@feiskyer](https://github.com/feiskyer)) Courtesy of SIG Azure

- Profiling can now be served on a unix-domain socket by using the `--profiling-path` option (when profiling is enabled) for security purposes. ([#114191](https://github.com/kubernetes/kubernetes/pull/114191), [@apelisse](https://github.com/apelisse)) [SIG API Machinery]

* Balanced resource allocation priority in scheduler to include volume count on node  ([#60525](https://github.com/kubernetes/kubernetes/pull/60525), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))
* new dhcp-domain parameter to be used for figuring out the hostname of a node ([#61890](https://github.com/kubernetes/kubernetes/pull/61890), [@dims](https://github.com/dims))

First published in 1865.

This text was produced by Project Gutenberg www.gutenberg.org,
an organization that produces free electronic books, mostly of
works old enough that they have passed into the public domain.


                            CHAPTER I

                      Down the Rabbit-Hole


  Alice was beginning to get very tired of sitting by her sister

- Kubelet: added log for volume metric collection taking too long ([#107490](https://github.com/kubernetes/kubernetes/pull/107490), [@pacoxu](https://github.com/pacoxu))
- Kubelet: added retry of checking Unix domain sockets on Windows nodes for the plugin registration mechanism. ([#110075](https://github.com/kubernetes/kubernetes/pull/110075), [@luckerby](https://github.com/luckerby))

As of Kuberenetes v1.19, Kubernetes container images are stored on a community-controlled storage bucket, 
located at `{asia,eu,us}.gcr.io/k8s-artifacts-prod`. The `k8s.gcr.io` vanity domain has been updated 
to this new bucket. This brings production artifacts under community control.

### KubeSchedulerConfiguration graduates to Beta

* Fixes segmentation fault issue with Protobuf library when log entries are deeply nested. ([#77224](https://github.com/kubernetes/kubernetes/pull/77224), [@qingling128](https://github.com/qingling128))
* kubeadm: support sub-domain wildcards in certificate SANs ([#76920](https://github.com/kubernetes/kubernetes/pull/76920), [@sempr](https://github.com/sempr))

* Add support to ingest log entries to Stackdriver against new "k8s_container" and "k8s_node" resources. ([#62076](https://github.com/kubernetes/kubernetes/pull/62076), [@qingling128](https://github.com/qingling128))
* new dhcp-domain parameter to be used for figuring out the hostname of a node ([#61890](https://github.com/kubernetes/kubernetes/pull/61890), [@dims](https://github.com/dims))