containerd Intro – Stephen Day, Docker (Any Skill Level)
summary
Containerd started April 2016, ships a stable 1.0 in December 2017 and adds Kubernetes CRI support in late April 2018; it exposes a gRPC API and Go client, uses Prometheus for metrics, and accepts contributions from IBM, Microsoft, Amazon, VMware and Google. Architecture separates image/content, metadata and task runtime, supports namespaced clients so Docker, kubelet and builders coexist, and adds snapshotters (ZFS, AUFS, native). CTR CLI is unstable but the client library lets code pull images, create mounts and mount a container filesystem without running it.
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