NixOS: Difference between revisions
imported>Samueldr m Use {{file}} template (first code block only) |
imported>Ixxie m Converted examples in modules section to the file template. |
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By comparison, NixOS's declarative configuration system provides a fully integrated facility for OS configuration management. Failure to specify any given item of configuration results in that item having a well-defined state, rather than being allowed to drift unmonitored. Because the full system configuration is captured in the NixOS configuration system, this also makes NixOS highly suited to the automatic deployment of configuration in environments such as automated server farms; tools such as [[NixOps]] make this easy. | By comparison, NixOS's declarative configuration system provides a fully integrated facility for OS configuration management. Failure to specify any given item of configuration results in that item having a well-defined state, rather than being allowed to drift unmonitored. Because the full system configuration is captured in the NixOS configuration system, this also makes NixOS highly suited to the automatic deployment of configuration in environments such as automated server farms; tools such as [[NixOps]] make this easy. | ||
Here is a simple example of a NixOS system configuration: | |||
{{file|/etc/nixos/configuration.nix|nix|<nowiki> | {{file|/etc/nixos/configuration.nix|nix|<nowiki> | ||
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The NixOS module system implements a typing system which allows typechecking of option settings. It also enables options defined in multiple places to be merged automatically. This allows you to spread your configuration over multiple files, and the options you set across all of those files will be merged together: | The NixOS module system implements a typing system which allows typechecking of option settings. It also enables options defined in multiple places to be merged automatically. This allows you to spread your configuration over multiple files, and the options you set across all of those files will be merged together: | ||
{{file|/etc/nixos/configuration.nix|nix|<nowiki> | |||
{ | { | ||
imports = [ | imports = [ | ||
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]; | ]; | ||
} | } | ||
</ | </nowiki>}} | ||
{{file|/etc/nixos/basic-webserver.nix|nix|<nowiki> | |||
{ | { | ||
services.nginx.enable = true; | services.nginx.enable = true; | ||
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}; | }; | ||
} | } | ||
</ | </nowiki>}} | ||
{{file|etc/nixos/blog.nix|nix|<nowiki> | |||
{ | { | ||
services.nginx.virtualHosts."blog.example.com" = { | services.nginx.virtualHosts."blog.example.com" = { | ||
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}; | }; | ||
} | } | ||
</ | </nowiki>}} | ||
See the [https://nixos.org/nixos/manual/index.html#sec-writing-modules Modules section of the NixOS Manual] for more details. | See the [https://nixos.org/nixos/manual/index.html#sec-writing-modules Modules section of the NixOS Manual] for more details. | ||