+----------------+ +-----------------+
| kubelet | | CRI shim |
| +-----------+ | | +-----------+ | +-----------+
| |grpc client|<-|-------|->|grpc server| |<---->| container |
| +-----------+ | | +-----------+ | | runtime |
+----------------+ +-----------------+ +-----------+
CRI shim
- cri-o
- cri-containerd
- rkt
- frakti
- docker (cri-dockerd)
container runtime
- gvisor
- kata containers