July 2019
Intermediate to advanced
502 pages
14h
English
Content preview from Hands-On Microservices with Kubernetes
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Abstracting the container runtime
Docker used to be the only container runtime that Kubernetes supported. Then it added special support to the now-defunct RKT runtime. However, later, it introduced the Container Runtime Interface (CRI) as a way to integrate any container runtime through a standard interface. Here are some of the runtimes that implement CRI and can be used in Kubernetes:
- Docker (of course)
- CRI-O (supports any OCI image)
- Containerd (became an CNCF graduate in February 2019)
- Frakti (Kata containers)
- PouchContainer (P2P image distribution, optional VM-based)