c12s-kubespray/docs/containerd.md

containerd

containerd An industry-standard container runtime with an emphasis on simplicity, robustness and portability Kubespray supports basic functionality for using containerd as the default container runtime in a cluster.

To use the containerd container runtime set the following variables:

k8s_cluster.yml

container_manager: containerd

etcd.yml

etcd_deployment_type: host

Containerd config

Example: define registry mirror for docker hub

containerd_registries:
  "docker.io":
    - "https://mirror.gcr.io"
    - "https://registry-1.docker.io"

containerd_registries is ignored for pulling images when image_command_tool=nerdctl (the default for container_manager=containerd). Use crictl instead, it supports containerd_registries but lacks proper multi-arch support (see #8375):

image_command_tool: crictl