A Pod includes a slow-starting metrics sidecar and a web container that should receive Service traffic only when the web app is ready. Where should the readinessProbe typically be placed?
Select an answer to reveal the explanation.
Short Explanation
Readiness is the “open for business” sign on the shop that customers actually visit. Hang that sign on the web container, not on the stockroom sidecar that’s still unpacking boxes.
Full Explanation
Readiness probes are defined per container and influence when the Pod is considered Ready for Service endpoints. Placing the readinessProbe on the application container ties traffic admission to the app’s ability to serve. Sidecar startup slowness need not block traffic if the app is healthy—unless you intentionally probe the sidecar too. Probes are supported on multi-container Pods.