Healthcheck

You can set a Kubernetes Readiness probe that determines whether your app is healthy and if it should receive traffic.

Enable it with:

probe:
  enabled: false
  path: "/"

Check the Kubernetes manifest:

cat << EOF > values.yaml
probe:
  enabled: false
  path: "/"
EOF

helm template my-release onechart/onechart -f values.yaml

Finetuning

You can further tune the frequency and thresholds of the probe with:

probe:
  enabled: false
  path: "/"
  settings:
    initialDelaySeconds: 0
    periodSeconds: 10
    successThreshold: 1
    timeoutSeconds: 3
    failureThreshold: 3

Setting	Description
initialDelaySeconds	Number of seconds after the container has started before the probes is initiated
periodSeconds	How often (in seconds) to perform the probe
successThreshold	Minimum consecutive successes for the probe to be considered successful after having failed
timeoutSeconds	Number of seconds after which the probe times out
failureThreshold	When a probe fails, Kubernetes will tries this many times before giving up. Giving up the pod will be marked Unready and won't get any traffic