# 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

```yaml
container_manager: containerd
```

## etcd.yml

```yaml
etcd_deployment_type: host
```

## Containerd config

Example: define registry mirror for docker hub

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

[containerd]: https://containerd.io/