c12s-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.
* Helm and other tools may not function as normal due to dependency on Docker.
* `scale.yml` and `upgrade-cluster.yml` are not supported on clusters using CRI-O.
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_To use CRI-O instead of Docker, set the following variables:_
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## all.yml
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```yaml
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download_container: false
skip_downloads: false
```
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## k8s-cluster.yml
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```yaml
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kubelet_deployment_type: host
container_manager: crio
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```
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## etcd.yml
```yaml
etcd_deployment_type: host
```
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[CRI-O]: https://cri-o.io/