cgroups and Namespaces — The Linux Kernel's Building Blocks Behind Containers

May 30, 2026 · 9:14 PM UTC ·6 min read · 0 reactions · 0 comments · 38 views

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The article discusses the fundamental Linux kernel features that enable containerization: cgroups and namespaces. These features allow multiple workloads to run on the same machine without interference, providing isolation and resource management. The development of these technologies has significantly improved the efficiency and safety of running containers in multi-tenant environments.

Key facts

▪Namespaces provide isolated instances of global system resources for each process, allowing them to operate independently.
▪Cgroups manage resource allocation, ensuring that groups of processes do not exceed specified resource limits.
▪The combination of namespaces and cgroups has transformed container technology, making it lightweight and efficient.

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Original publisher	DEV.to (Top)
Canonical URL	https://dev.to/kobbyprincee/cgroups-and-namespaces-the-fundamental-building-blocks-of-linux-containers-and-orchestration-53e3
Publication time	Sat, 30 May 2026 21:14:17 +0000
Retrieval time	2026-05-30T21:27:40.352Z
Last seen	2026-05-30T21:27:40.352Z
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3105309) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } William Kwabena Akoto Posted on May 30 cgroups and Namespaces — The Linux Kernel's Building Blocks Behind Containers #containers #cgroups #namespaces #linux Every container you have ever run is, at its core, a process with a restricted view of the world and a capped share of the machine's resources. That restriction and that cap come from exactly two kernel features: namespaces and cgroups. Everything else is plumbing.

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