// --- in a way that works no matter what servers crash
			// and restart when. If this handler reacts only to
			// changes in Spec then we have a scenario in which the
			// rollout leaves the old Status in place. The scenario
			// ends with this subsequence: deploy the last new server
			// before deleting the last old server, and in between
			// those two operations the last old server crashes and

  * `kubectl rollout` supports undo and history for DaemonSet ([#46144](https://github.com/kubernetes/kubernetes/pull/46144), [@janetkuo](https://github.com/janetkuo))

  * `kubectl rollout` supports status and history for StatefulSet  ([#46669](https://github.com/kubernetes/kubernetes/pull/46669), [@kow3ns](https://github.com/kow3ns)).

- The `kubectl top` command now includes a `--sort-by` option to sort by `memory` or `cpu`. ([#75920](https://github.com/kubernetes/kubernetes/pull/75920), [@artmello](https://github.com/artmello))
- `kubectl rollout restart` now works for DaemonSets and StatefulSets. ([#77423](https://github.com/kubernetes/kubernetes/pull/77423), [@apelisse](https://github.com/apelisse))

			mode += 'r'
			clear |= _POLLIN
		}
		if (ev.portev_events & (_POLLOUT | _POLLHUP | _POLLERR)) != 0 {
			mode += 'w'
			clear |= _POLLOUT
		}
		// To effect edge-triggered events, we need to be sure to
		// update our association with whatever events were not
		// set with the event. For example if we are registered
		// for POLLIN|POLLOUT, and we get POLLIN, besides waking

  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.

- `kubectl create configmap` and `kubectl create secret` subcommands now support

- Changed the error message of `kubectl rollout restart` when subsequent `kubectl rollout restart` commands are executed within a second ([#113040](https://github.com/kubernetes/kubernetes/pull/113040), [@ardaguclu](https://github.com/ardaguclu))

	MAXHOSTNAMELEN = C.MAXHOSTNAMELEN

	O_WRONLY   = C.O_WRONLY
	O_NONBLOCK = C.O_NONBLOCK
	O_CREAT    = C.O_CREAT
	O_TRUNC    = C.O_TRUNC
	O_CLOEXEC  = C.O_CLOEXEC

	POLLIN  = C.POLLIN
	POLLOUT = C.POLLOUT
	POLLHUP = C.POLLHUP
	POLLERR = C.POLLERR

	PORT_SOURCE_FD    = C.PORT_SOURCE_FD
	PORT_SOURCE_ALERT = C.PORT_SOURCE_ALERT
	PORT_ALERT_UPDATE = C.PORT_ALERT_UPDATE
)

type SemT C.sem_t

	istioBuildTag   = monitoring.NewGauge(
		"istio_build",
		"Istio component build info",
	)
)

// RecordComponentBuildTag sets the value for a metric that will be used to track component build tags for
// tracking rollouts, etc.
func (b BuildInfo) RecordComponentBuildTag(component string) {
	istioBuildTag.With(gitTagKey.Value(b.GitTag), componentTagKey.Value(component)).Increment()

		pfd := &pfds[i]

		var mode int32
		if pfd.revents&(_POLLIN|_POLLHUP|_POLLERR) != 0 {
			mode += 'r'
			pfd.events &= ^_POLLIN
		}
		if pfd.revents&(_POLLOUT|_POLLHUP|_POLLERR) != 0 {
			mode += 'w'
			pfd.events &= ^_POLLOUT
		}
		if mode != 0 {
			pds[i].setEventErr(pfd.revents == _POLLERR, 0)
			delta += netpollready(&toRun, pds[i], mode)
			n--
		}
	}
	unlock(&mtxset)

                        </h1>
                    </div>
                </div>
            </div>
        </div>
        <section class="content">
            <div class="callout callout-danger lead">
                <p>
                    <la:errors/>
                </p>
            </div>

        </section>
    </div>