Learn Docker - Fundamentals of Docker 19.x - Second Edition

Pod life cycle

Earlier in this book, we learned that containers have a life cycle. A container is initialized, run, and ultimately exited. When a container exits, it can do this gracefully with an exit code zero or it can terminate with an error, which is equivalent to a nonzero exit code.

Similarly, a pod has a life cycle. Due to the fact that a pod can contain more than one container, this life cycle is slightly more complicated than that of a single container. The life cycle of a pod can be seen in the following diagram:

The life cycle of Kubernetes pods

When a Pod is created on a cluster node, it first enters into the pending status. Once ...