// Probe describes a health check to be performed against a container to determine whether it is // alive or ready to receive traffic. type Probe struct { // ... // 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 InitialDelaySeconds int32 // Number of seconds after which the probe times out. // Defaults to 1 second. Minimum value is 1. TimeoutSeconds int32 // How often (in seconds) to perform the probe. // Default to 10 seconds. Minimum value is 1. PeriodSeconds int32 // Minimum consecutive successes for the probe to be considered successful after having failed. // Defaults to 1. Must be 1 for liveness and startup. Minimum value is 1. SuccessThreshold int32 // Minimum consecutive failures for the probe to be considered failed after having succeeded. // Defaults to 3. Minimum value is 1. FailureThreshold int32 // ... }
startupProbe Waiting Probing Failing container start `initial Delay Seconds` `timeout Seconds` `failure Threshold` reached Passing fail pass `successThreshold` is required to be 1 for `startupProbe` restart container `period Seconds` Passed `success Threshold` reached continue `startupProbe` is done and will not be revisited unless the container restarts
readinessProbe Waiting Probing Failing `initial Delay Seconds` `timeout Seconds` `failure Threshold` reached Passing fail pass `period Seconds` `period Seconds` Ready Unready `period Seconds` `success Threshold` reached `period Seconds` `readinessProbe` does not start until `startupProbe` completes (if defined) `failureThreshold` is a consecutive count - any “pass” result resets the counter `successThreshold` is a consecutive count - any “fail” result resets the counter
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