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Discussion on "Containers Are Not Magic: Namespaces From Scratch" | Hashnode

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Containers Are Not Magic: Namespaces From Scratch

Learn how containers actually work by building one from scratch in Go using Linux namespaces. No Docker, just raw kernel primitives.

Apr 18·17 min read·blog.iamvedant.inUpdated Apr 20Read the article

#go
#linux

#docker

#containers

#namespaces

Written by

Vedant

@Vedant228 · Pune,India

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I am a Backend Developer who designs for performance and scale. Love to explore the under the hood part of technologies.

Responses4

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Laura Ashaley

Apr 20

That’s an oversimplification—containers are not just a wrapper, they’re a combination of kernel features like namespaces and cgroups that provide isolation, process control, and resource limits at the OS level.

Vedant

Apr 20

Yes I understand, My intention is not to say it's not complex, my intention of mentioning that part in the title is to remove the mental doubt of "can I understand it". Since I have implemented it I know it's not something very easy but most of the part is provided by kernel. We just need to use it together to form a system.

Laura Ashaley

Apr 20

Containers aren’t just a “wrapper”—they’re built on real kernel features like namespaces and cgroups that isolate processes and control resources, making them lightweight but powerful virtualization at the OS level.

Yes I do agree but the primary intention of putting it in the title is I have seen many developers who never even try to explore how technologies are built under the hood. The mindset is that it is built on some complex code that needs a high level of expertise to understand which is not the case.

Vedant

Apr 20