OCI, CRI, ??: Making Sense of the Container Runtime Landscape in Kubernetes

on YouTube ↗24m

" summary

OCI defines runtime and image specs (runtime and image spec 1.0 released 2017) and Kubernetes uses the CRI (announced late 2016) so multiple runtimes interoperate: docker, containerd, cri-o, rkt, Singularity, kata, gVisor, Firecracker. containerd is production GA in GKE and IBM managed services and AWS Fargate moves to containerd; OpenShift defaults to cri-o. Kubernetes offers RuntimeClass and crictl to choose and debug runtimes. Choice trades off size, extensibility, and sandbox isolation.

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" chapters (15)

1. 0:00Intro
2. 1:15It all began with Docker
3. 2:08Container Runtimes
4. 3:42The OCI is Born
5. 5:33A Common Substrate
6. 6:27Ongoing OCI Focus
7. 8:16Kubernetes...
8. 8:41Kubernetes: Runtime
9. 9:47Kubernetes: CRI
10. 10:34Who implements the CRI?
11. 13:02Current State of Runtimes
12. 14:25Why Different Runtimes?
13. 17:02Sandboxes
14. 18:05Common Interface
15. 19:27Summary

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