How Kubernetes Probes Work

Kubernetes probes are periodic health checks that come in three types—startup, readiness, and liveness—designed to make applications more resilient by preventing containers from receiving traffic before they're ready and avoiding restart loops. Without proper probe configuration, containers are marked as ready immediately upon starting even if they're still initializing, causing requests to fail during the startup period. The article demonstrates through interactive examples how misconfigurations can lead to dropped requests during deployments and prolonged recovery times.