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29 lines
1.2 KiB
Markdown
29 lines
1.2 KiB
Markdown
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# Container Management {#ch-containers}
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NixOS allows you to easily run other NixOS instances as *containers*.
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Containers are a light-weight approach to virtualisation that runs
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software in the container at the same speed as in the host system. NixOS
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containers share the Nix store of the host, making container creation
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very efficient.
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::: {.warning}
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Currently, NixOS containers are not perfectly isolated from the host
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system. This means that a user with root access to the container can do
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things that affect the host. So you should not give container root
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access to untrusted users.
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:::
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NixOS containers can be created in two ways: imperatively, using the
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command `nixos-container`, and declaratively, by specifying them in your
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`configuration.nix`. The declarative approach implies that containers
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get upgraded along with your host system when you run `nixos-rebuild`,
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which is often not what you want. By contrast, in the imperative
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approach, containers are configured and updated independently from the
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host system.
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```{=docbook}
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<xi:include href="imperative-containers.section.xml" />
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<xi:include href="declarative-containers.section.xml" />
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<xi:include href="container-networking.section.xml" />
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```
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