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Signed-off-by: Lantao Liu <lantaol@google.com>
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Lantao Liu
2018-02-08 00:18:22 +00:00
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docs/architecture.md
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# Architecture of CRI-Containerd
This document describes the architecture of `cri-containerd`.
Cri-containerd is a containerd based implementation of Kubernetes [container runtime interface (CRI)](https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/apis/cri/v1alpha1/runtime/api.proto). It operates on the same node as the [Kubelet](https://kubernetes.io/docs/reference/generated/kubelet/) and [containerd](https://github.com/containerd/containerd). Layered between Kubernetes and containerd, cri-containerd handles all CRI service requests from the Kubelet and uses containerd to manage containers and container images.
Cri-containerd is a containerd based implementation of Kubernetes [container runtime interface (CRI)](https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/apis/cri/runtime/v1alpha2/api.proto). It operates on the same node as the [Kubelet](https://kubernetes.io/docs/reference/generated/kubelet/) and [containerd](https://github.com/containerd/containerd). Layered between Kubernetes and containerd, cri-containerd handles all CRI service requests from the Kubelet and uses containerd to manage containers and container images.
Cri-containerd uses containerd to manage the full container lifecycle and all container images. As also shown below, cri-containerd manages pod networking via [CNI](https://github.com/containernetworking/cni) (another CNCF project).