Advanced · Module 9 · Lesson 11 of 13
Linux Namespaces and cgroups
Understand the isolation and resource-control primitives that form the foundation of Linux containers.
Pro — members onlyAbout 18 minutes
By the end you can
- Distinguish namespace isolation from resource control
- Identify the major Linux namespace types
- Explain cgroup limits and accounting
- Describe why containers are not virtual machines
Builds on Process Environments, Resource Limits, and Daemon Startup, Process Lifecycle: fork, execve, and Address Space Duplication.
01 · A question first
A container can have PID 1 and its own filesystem view while sharing the host kernel. Which kernel boundaries create that illusion, and what remains shared?
Make a guess before you read on.
02 · The idea
Members only
Unlock the full lesson
This lesson is part of the membership. Join to read it in full, along with every other premium deep dive.
What's inside
- Two different primitives
- Namespace types
- cgroup control
- A minimal cgroup v2 control path
- Follow a process across the boundary
- Security and operations trade-offs
- Where it is used
- Operational checklist
Something wrong with this lesson? Report a problem