bstart []*obj.Prog

	maxarg int64 // largest frame size for arguments to calls made by the function

	// Map from GC safe points to liveness index, generated by
	// liveness analysis.
	livenessMap liveness.Map

	// partLiveArgs includes arguments that may be partially live, for which we
	// need to generate instructions that spill the argument registers.
	partLiveArgs map[*ir.Name]bool

- Adds `\livez` for liveness health checking for kube-apiserver. Using the parameter `--maximum-startup-sequence-duration` will allow the liveness endpoint to defer boot-sequence failures for the specified duration period. ([#81969](https://github.com/kubernetes/kubernetes/pull/81969), [@logicalhan](https://github.com/logicalhan))

  // +patchMergeKey=devicePath
  // +patchStrategy=merge
  // +optional
  repeated VolumeDevice volumeDevices = 21;

  // Periodic probe of container liveness.
  // Container will be restarted if the probe fails.
  // Cannot be updated.
  // More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes
  // +optional

	"volumeDevices":            "volumeDevices is the list of block devices to be used by the container.",
	"livenessProbe":            "Periodic probe of container liveness. Container will be restarted if the probe fails. Cannot be updated. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes",

  // +patchMergeKey=devicePath
  // +patchStrategy=merge
  // +listType=map
  // +listMapKey=devicePath
  // +optional
  repeated VolumeDevice volumeDevices = 21;

  // Periodic probe of container liveness.
  // Container will be restarted if the probe fails.
  // Cannot be updated.
  // More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes
  // +optional

    * Bump metadata agent version to 0.2-0.0.21-1.
    * Expand the metadata agent's access to all API groups.
    * Remove metadata agent config maps in favor of command line flags.
    * Update the metadata agent's liveness probe to a new /healthz handler.
    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.

- kubelet
  - The deprecated `--experimental-fail-swap-on` flag has been removed ([#69552](https://github.com/kubernetes/kubernetes/pull/69552), [@Pingan2017](https://github.com/Pingan2017))

type Probe struct {
	// The action taken to determine the health of a container
	ProbeHandler `json:",inline" protobuf:"bytes,1,opt,name=handler"`
	// Number of seconds after the container has started before liveness probes are initiated.
	// More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes
	// +optional

timeout (if not specified) is `1s` which may be too small for some exec probes. Ensure that pods relying on this behavior are updated to correctly handle probe timeouts. See [configure probe](https://docs.k8s.io/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/#configure-probes) section of the documentation for more details.

  - This change in behavior may be unexpected for some clusters and can be disabled by turning off the `ExecProbeTimeout` feature gate. This gate...

    * Bump metadata agent version to 0.2-0.0.21-1.
    * Expand the metadata agent's access to all API groups.
    * Remove metadata agent config maps in favor of command line flags.
    * Update the metadata agent's liveness probe to a new /healthz handler.
    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.