46 lines
1.5 KiB
Markdown
46 lines
1.5 KiB
Markdown
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# CRI: Containerd by default
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* First proposed: 2020-11-08
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* Authors: Anders F Björklund (@afbjorklund)
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## Reviewer Priorities
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Please review this proposal with the following priorities:
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* Does this fit with minikube's [principles](https://minikube.sigs.k8s.io/docs/concepts/principles/)?
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* Are there other approaches to consider?
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* Could the implementation be made simpler?
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* Are there usability, reliability, or technical debt concerns?
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Please leave the above text in your proposal as instructions to the reader.
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## Summary
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Change default container runtime, from current "docker" to replacement "containerd".
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## Goals
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* Change from docker to containerd as default
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* Still allow fast-building images with minikube
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## Non-Goals
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* Remove the docker support from minikube
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* Change anything in the docker driver
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## Design Details
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The containerd container runtime is already included, and is passing certification.
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Unlike [Docker](https://www.docker.com/products/docker-engine), will need to include the CRI (runtime) and CNI (network) by default.
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Use [BuildKit](https://github.com/moby/buildkit) as a complement to [Containerd](https://containerd.io/), for producing an image from Dockerfile.
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Only run buildkitd on-demand (i.e. when building), default to running only containerd.
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## Alternatives Considered
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Keep Docker as the default, and add the new CRI-Docker to replace the old dockershim.
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Use [CRI-O](https://cri-o.io/)/[Podman](https://podman.io/) as default, which is a bigger change (since dockerd uses containerd).
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