What happens if the liveness probe fails?

If the liveness probe in Kubernetes fails, it means that the container is considered 'not alive'. As a result, kubelet initiates a restart of this container to restore its functionality.

A liveness probe is a check mechanism that determines whether the application inside the container is in a state where it can serve requests. If the check fails for a specified number of attempts, the container is killed and restarted.

Thus, the liveness probe helps automatically recover applications that have become unresponsive or stopped working correctly, increasing system resilience.