An optional prefix sets a non-decimal base: <code>0b</code> or <code>0B</code>
for binary, <code>0</code>, <code>0o</code>, or <code>0O</code> for octal,
and <code>0x</code> or <code>0X</code> for hexadecimal
[<a href="#Go_1.13">Go 1.13</a>].
A single <code>0</code> is considered a decimal zero.
In hexadecimal literals, letters <code>a</code> through <code>f</code>
and <code>A</code> through <code>F</code> represent values 10 through 15.
</p>

  optional string message = 3;

  // Condition error code for a component.
  // For example, a health check error code.
  // +optional
  optional string error = 4;
}

// ComponentStatus (and ComponentStatusList) holds the cluster validation info.
// Deprecated: This API is deprecated in v1.19+
message ComponentStatus {
  // Standard object's metadata.

The SIG also focused on adding functionality to the Kubernetes volume subsystem, such as alpha support for exposing volumes as block devices inside containers, extending the alpha volume-resizing support to more volume plugins, and topology-aware volume scheduling.

### Windows

([#62695](https://github.com/kubernetes/kubernetes/pull/62695), [@CaoShuFeng](https://github.com/CaoShuFeng))

#### Extensibility

- The community has been asking for continuing support of extensibility, so this cycle features more work around CRDs and API Machinery. Most of the enhancements in this cycle were from SIG API Machinery and related areas.

### Extensibility around core Kubernetes APIs

- `GetPodQOS(pod *core.Pod)` function now returns the stored value from `PodStatus.QOSClass`, if set. To compute/evaluate the value of `QOSClass` from scratch, `ComputePodQOS(pod*core.Pod)` must be used. ([#119665](https://github.com/kubernetes/kubernetes/pull/119665), [@vinaykul](https://github.com/vinaykul))

- Kube-scheduler now falls back to emitting events using core/v1 Events when events.k8s.io/v1beta1 is disabled. ([#83692](https://github.com/kubernetes/kubernetes/pull/83692), [@yastij](https://github.com/yastij))

* Skip errors when unregistering juju kubernetes-workers ([#48144](https://github.com/kubernetes/kubernetes/pull/48144), [@ktsakalozos](https://github.com/ktsakalozos))
* Configures the Juju Charm code to run kube-proxy with conntrack-max-per-core set to 0 when in an lxc as a workaround for issues when mounting /sys/module/nf_conntrack/parameters/hashsize ([#48450](https://github.com/kubernetes/kubernetes/pull/48450), [@wwwtyro](https://github.com/wwwtyro))

    - [**Cluster Federation**](#cluster-federation)
      - [Placement Policy](#placement-policy)
      - [Cluster Selection](#cluster-selection)
    - [**Instrumentation**](#instrumentation)
      - [Core Metrics API](#core-metrics-api)
    - [**Internationalization**](#internationalization)
    - [**kubectl (CLI)**](#kubectl-cli-1)
    - [**Networking**](#networking)
      - [Network Policy](#network-policy)

    * If the serialization type is 'application/json':
    * If serialization fails, and the original status code was an failure (e.g. 4xx or 5xx), the original status code will be returned.