Splunk Operator Health Check with K8 Probes

Splunk Operator supports Startup, Liveness and Readiness Probes (with its own default values) for Splunk Custom Resources. The following probe configurations are allowed to be modified through Custom Resources:

• initialDelaySeconds
• timeoutSeconds
• periodSeconds
• failureThreshold

Please refer to Kubernetes documentation for more information on Startup, Liveness and Readiness Probes.

Default Values for InitialDelaySeconds,TimeoutSeconds, PeriodSeconds and FailureThreshold

Probe Type	initialDelaySeconds	timeoutSeconds	periodSeconds	failureThreshold
Startup Probe	40	30	30	12
Readiness Probe	10	5	5	3
Liveness Probe	30	30	30	3

These defaults serve for most of the use cases. If any tuning is needed, following is an example on how to modify the defaults.

Example to configure Probes for Startup, Liveness and Readiness

apiVersion: enterprise.splunk.com/v4
kind:  Standalone
metadata:
  name: example
  finalizers:
  - enterprise.splunk.com/delete-pvc
spec:
  replicas: 1
  startupProbe:
    initialDelaySeconds: 40
    timeoutSeconds: 30
    periodSeconds: 30
    failureThreshold: 12
  livenessProbe:
    initialDelaySeconds: 30
    timeoutSeconds: 30
    periodSeconds: 30
    failureThreshold: 3
  readinessProbe:
    initialDelaySeconds: 10
    timeoutSeconds: 5
    periodSeconds: 5
    failureThreshold: 3