If a liveness or readiness probe returns false for a container in Kubernetes, it triggers the restart of that particular container. However, if the restartPolicy for the pod is set to “Always” (which is the default value), then it will also restart all other containers within that same pod.
This means that when one container fails its health check and needs to be restarted, Kubernetes will automatically terminate the faulty container and create a new one in its place. This process ensures that all containers within the pod are running with their latest configurations and updates.
It’s important to note that restarting a container may cause some downtime for your application as it goes through the process of terminating and recreating a new instance. However, using probes with appropriate thresholds can help minimize this disruption by ensuring rapid response times to failures and triggering early restarts before they cause larger issues.
