Kubernetes Container Image Pull Concepts

External

• https://kubernetes.io/docs/concepts/containers/images/
• https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

Internal

• Kuberntes Pod and Container Concepts

Overview

A pod's containers pull their images from their respective repositories while the pod is in Pending phase. Technically, it is the kubelet that performs the image pulling on behalf of the pod.

Pull Policy

The pull policy is configured on a per-container basis using the imagePullPolicy tag in the pod manifest.