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Update concepts-k8s.md

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Jérôme Petazzoni
2019-11-12 06:15:06 -06:00
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@@ -191,19 +191,27 @@ No!
- By default, Kubernetes uses the Docker Engine to run containers
- Or leverage other pluggable runtimes through the *Container Runtime Interface*
- We can leverage other pluggable runtimes through the *Container Runtime Interface*
- <del>We could also use `rkt` ("Rocket") from CoreOS</del> (deprecated)
- [containerd](https://github.com/containerd/containerd/blob/master/README.md):
maintained by Docker, IBM, and community
---
- Used by Docker Engine, microK8s, k3s, GKE, and standalone. Has `ctr` CLI
class: extra-details
## Some runtimes available through CRI
- [containerd](https://github.com/containerd/containerd/blob/master/README.md)
- maintained by Docker, IBM, and community
- used by Docker Engine, microk8s, k3s, GKE; also standalone
- comes with its own CLI, `ctr`
- [CRI-O](https://github.com/cri-o/cri-o/blob/master/README.md):
maintained by Red Hat, SUSE, and community. Based on containerd
- Used by OpenShift and Kubic, version matched to Kubernetes
- maintained by Red Hat, SUSE, and community
- used by OpenShift and Kubic
- designed specifically as a minimal runtime for Kubernetes
- [And more](https://kubernetes.io/docs/setup/production-environment/container-runtimes/)