Kubernetes v1.33: Updates to Container Lifecycle

Kubernetes v1.33: Updates to Container Lifecycle Zero value for Sleep action Container stop signals Default behaviour Version skew Using container stop signals How do I get involved? Kubernetes v1.33 introduces a few updates to the lifecycle of containers. The Sleep action for container lifecycle hooks now supports a zero sleep duration (feature enabled by default). There is also alpha support for customizing the stop signal sent to containers when they are being terminated. This blog post goes into the details of these new aspects of the container lifecycle, and how you can use them. Kubernetes v1.29 introduced the Sleep action for container PreStop and PostStart Lifecycle hooks. The Sleep action lets your containers pause for a specified duration after the container is started or before it is terminated. This was needed to provide a straightforward way to manage graceful shutdowns. Before the Sleep action, folks used to run the sleep command using the exec action in their container lifecycle hooks. If you wanted to do this you'd need to have the binary for the sleep command in your container image. This is difficult if you're using third party images. Sleep sleep sleep The sleep action when it was added initially didn't have support for a sleep duration of zero seconds. The time.