TNS Tutorials: The CoreOS rkt Container Engine, and How It Compares to Docker

Episode 98 · March 1st, 2017 · 42 mins 29 secs

About this Episode

In this #TimeMachineTuesday episode of TNS Tutorials, we explored the CoreOS’ container engine, rkt, discussing how developer choice and flexibility have affected the container ecosphere, and gain an inside look as to the healthy rivalry between rkt and Docker.

The New Stack founder Alex Williams sat down with Josh Wood of documentation operations at CoreOS to discuss these topics and more.

Wood began the demonstration by diving into the features that make rkt stand out from other container management tools. First, rkt does not impose a daemon which will then spin idly in the background of a system, standing between containers and their management tools. Once an environment has spun up, rkt will exit and allow users to interact with their containers fully. Rkt uses an ACI (Application Container Image) format, as does Kubernetes, to build its images. Wood noted that although this differs from Docker’s container format, rkt fully supports Docker images, caching directly the Docker Hub with ease.

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