}

type Prober interface {
	// Check executes the probe and returns an error if the probe fails.
	Check() error
}

var _ Prober = &Probe{}

// Check executes the probe and returns an error if the probe fails.
func (p *Probe) Check() error {
	// First, check that Envoy has received a configuration update from Pilot.
	if err := p.checkConfigStatus(); err != nil {
		return err
	}
	return p.isEnvoyReady()
}

John Howard <******@****.***> 1716476823 -0700

	"k8s.io/kubernetes/pkg/probe"

	"k8s.io/klog/v2"
	"k8s.io/utils/exec"
)

const (
	maxReadLength = 10 * 1 << 10 // 10KB
)

// New creates a Prober.
func New() Prober {
	return execProber{}
}

// Prober is an interface defining the Probe object for container readiness/liveness checks.
type Prober interface {
	Probe(e exec.Cmd) (probe.Result, string, error)
}

	if err != nil || (result != probe.Success && result != probe.Warning) {
		// Probe failed in one way or another.
		if err != nil {
			klog.V(1).ErrorS(err, "Probe errored", "probeType", probeType, "pod", klog.KObj(pod), "podUID", pod.UID, "containerName", container.Name)
			pb.recordContainerEvent(pod, &container, v1.EventTypeWarning, events.ContainerUnhealthy, "%s probe errored: %v", probeType, err)
		} else { // result != probe.Success

        configurationCacheRun ':included:classloader1:probe', ':included:boundary:classloader2:probe'

        then: 'on classloader classloader1'
        outputContains 'probe(classloader1) => 1'
        outputContains 'probe(classloader1) => 2'
        outputContains 'probe(classloader1) => 3'

        and: 'on classloader classloader2'
        outputContains 'probe(classloader2) => 1'

	tests := []struct {
		expectedStatus   probe.Result
		expectError      bool
		execProbeTimeout bool
		input            string
		output           string
		err              error
	}{
		// Ok
		{probe.Success, false, true, "OK", "OK", nil},
		// Ok
		{probe.Success, false, true, "OK", "OK", &fakeExitError{true, 0}},
		// Ok - truncated output
		{probe.Success, false, true, elevenKilobyte, tenKilobyte, nil},

  - image: registry.k8s.io/nginx:1.7.9
    name: target
    readinessProbe:
      exec:
        command: ["/bin/sh", "-c", "cat probe"]
    livenessProbe:
      exec:
        command: ["/bin/sh", "-c", "cat probe"]
    startupProbe:
      exec:
        command: ["/bin/sh", "-c", "cat probe"]
  initContainers:
  - image: busybox

## Healthcheck Probe

MinIO server has two healthcheck related un-authenticated endpoints, a liveness probe to indicate if server is responding, cluster probe to check if server can be taken down for maintenance.

- Liveness probe available at `/minio/health/live`
- Cluster probe available at `/minio/health/cluster`

			expectedGracePeriod: shortGracePeriod,
		},
		{
			name: "startup probe overrides pod termination grace period, probe period > pod period",
			pod: &v1.Pod{
				Spec: v1.PodSpec{
					Containers: []v1.Container{{
						Name: "foo", StartupProbe: &v1.Probe{TerminationGracePeriodSeconds: &longGracePeriod},
					}},
					TerminationGracePeriodSeconds: &shortGracePeriod,
				},
			},

func isRedirect(code int) bool {
	return code >= http.StatusMultipleChoices && code < http.StatusBadRequest
}

// Using the same redirect logic that kubelet does: https://github.com/kubernetes/kubernetes/blob/b152001f459/pkg/probe/http/http.go#L141
// This means that:
// * If we exceed 10 redirects, the probe fails