kubespray/docs/cri-o.md

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# CRI-O
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[CRI-O] is a lightweight container runtime for Kubernetes.
Kubespray supports basic functionality for using CRI-O as the default container runtime in a cluster.
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* Kubernetes supports CRI-O on v1.11.1 or later.
* etcd: configure either kubeadm managed etcd or host deployment
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_To use the CRI-O container runtime set the following variables:_
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## all/all.yml
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```yaml
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download_container: false
skip_downloads: false
etcd_kubeadm_enabled: true
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```
## k8s-cluster/k8s-cluster.yml
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```yaml
container_manager: crio
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```
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## etcd.yml
```yaml
etcd_deployment_type: host # optionally and mutually exclusive with etcd_kubeadm_enabled
```
## all/crio.yml
Enable docker hub registry mirrors
```yaml
crio_registries_mirrors:
- prefix: docker.io
insecure: false
blocked: false
location: registry-1.docker.io
mirrors:
- location: 192.168.100.100:5000
insecure: true
- location: mirror.gcr.io
insecure: false
```
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[CRI-O]: https://cri-o.io/