Docker Explainer: Namespaces & Control Groups

Explainer Sep 21 2019

In a recent system configuration I found myself digging into using cgroups to reserve resources for some critical system daemons. As I was digging in I discovered that cgroups (Control Groups) were actually one of the core concepts used in Docker (and thus Kubernetes) for managing Memory & CPU allocation.

I put together this little one-page explainer showing briefly how cgroups and namespaces work together to make the foundation of containers. Enjoy!

Container Explainer Diagram

Additional Resources

Curious and want to dive deeper into the inner working of Docker? Here are some resources that I have found helpful when getting started.

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