Slide 14
Slide 14 text
Termination of Pods
• 3. Pod shows up as “Terminating” when listed in client commands
• 4. (simultaneous with 3) When the Kubelet sees that a Pod has been
marked as terminating because the time in 2 has been set, it begins the
Pod shutdown process.
• 1. If one of the Pod’s containers has defined a preStop hook, it is invoked
inside of the container. If the prestop hook is still running after the grace period
expires, step 2 is then invoked with a small (2 second) extended grace period.
• 2. The container is sent the TERM signal. Note that not all containers in the
Pod will receive the TERM signal at the same time and may each require a
prestop hook if the order in which they shut down matters.
• 5. (simultaneous with 3) Pod is removed from endpoints list for service,
and are no longer considered part of the set of running Pods for
replication controllers. Pods that shutdown slowly cannot continue to
serve traffic as load balancers (like the service proxy) remove them from
their rotations.
https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods