- kubeadm now handles air-gapped environments by using the local client version as a fallback.
  - Some kubeadm commands are now allowed to work in a completely offline mode.
- Certificate handling improvements:
  - Renew certs as part of upgrade.
  - New `kubeadm alpha phase certs renew` command for renewing certificates.
  - Certificates created with kubeadm now have improved uniqueness of Distinguished Name fields.

- Kubectl [get and describe](https://github.com/kubernetes/enhancements/issues/515) now works with extensions
- Nodes now support [third party monitoring plugins](https://github.com/kubernetes/enhancements/issues/606).
- A new [Scheduling Framework](https://github.com/kubernetes/enhancements/issues/624) for schedule plugins is now Alpha.

    ```

### Generate a TypeScript Client with Custom Operation IDs

Now if you generate the client again, you will see that it has the improved method names:

<img src="/img/tutorial/generate-clients/image07.png">

As you see, the method names now have the tag and then the function name, now they don't include information from the URL path and the HTTP operation.

Earlier versions of Go did not collect unstopped `Timer`s until after
they had fired and never collected unstopped `Ticker`s.

Second, the timer channel associated with a `Timer` or `Ticker` is
now unbuffered, with capacity 0.
The main effect of this change is that Go now guarantees
that for any call to a `Reset` or `Stop` method, no stale values
prepared before that call will be sent or received after the call.

#### Windows
- The Windows containers RunAsUsername feature is now beta.
- Windows worker nodes in a Kubernetes cluster now support Windows Server version 1903 in addition to the existing support for Windows Server 2019
- The RuntimeClass scheduler can now simplify steering Linux or Windows pods to appropriate nodes

#### CLI Changes

- [alpha] `kubectl` plugins: `kubectl` now allows binary extensibility. You can extend the default set of `kubectl` commands by writing plugins
  that provide new subcommands. Refer to the documentation for more information.

- `kubectl rollout` and `rollback` now support StatefulSet.

- `kubectl scale` now uses the Scale subresource for kinds in the apps/v1beta2 group.

- Promoted `AdmissionWebhookMatchConditions` to GA. The feature is now stable, and the feature gate is now locked to default.
   ([#123560](https://github.com/kubernetes/kubernetes/pull/123560), [@ivelichkovich](https://github.com/ivelichkovich))

github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=

    val deltaMillis = 1000.0
    val durationMillis = TimeUnit.MINUTES.toMillis((60 * 24).toLong())
    assertThat(certificate.notBefore.time.toDouble())
      .isCloseTo(now.toDouble(), deltaMillis)
    assertThat(certificate.notAfter.time.toDouble())
      .isCloseTo(now.toDouble() + durationMillis, deltaMillis)
  }

  @Test
  fun customInterval() {
    // 5 seconds starting on 1970-01-01.
    val heldCertificate =

   *
   * Returns the duration in nanoseconds to sleep until the next scheduled call to this method.
   * Returns -1 if no further cleanups are required.
   */
  fun closeConnections(now: Long): Long {
    // Compute the concurrent call capacity for each address. We won't close a connection if doing
    // so would violate a policy, unless it's OLD.
    val addressStates = this.addressStates