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Control Groups and Capabilities

Control Groups and Capabilities

Let's look at control groups and capabilities in Linux.

We'll cover the following...

Control groups

If namespaces are about isolation, control groups (cgroups) are about limits.

Think of containers as similar to rooms in a hotel. While each room might appear to be isolated, they actually share many things, such as water, electricity, air conditioning, a swimming pool, a gym, elevators, a breakfast bar, and more. Containers are similar—even though they’re isolated, they share many common resources, such as the host’s CPU, RAM, network I/O, and disk I/O. ...