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isolation

DevOps interview questions tagged isolation, across every topic.

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Concepts behind "isolation"

The concept pages behind what these questions are testing.

Foundational
🐧 Systems Foundations
Namespaces and cgroups: what a container actually isA container is not a thing the kernel knows about. It is an ordinary process with two kernel features applied to it: namespaces, which change what it can see, and cgroups, which change what it can use. Understanding that split explains most container behaviour that otherwise looks like magic, including why a container can see the host's memory and size itself wrong.
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