Systemd/User Services/ru: Difference between revisions

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Created page with "Systemd/Пользовательские сервисы"
 
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Created page with "<syntaxhighlight lang="nix"> systemd.user.services.my-cool-user-service = { enable = true; after = [ "network.target" ]; wantedBy = [ "default.target" ]; description = "Мой Классный Пользовательский Сервис"; serviceConfig = { Type = "simple"; ExecStart = ''/my/cool/user/service''; }; }; </syntaxhighlight>"
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Here is an example:
Here is an example:
</div>
</div>
<div lang="en" dir="ltr" class="mw-content-ltr">
<syntaxhighlight lang="nix">
<syntaxhighlight lang="nix">
systemd.user.services.my-cool-user-service = {
systemd.user.services.my-cool-user-service = {
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   after = [ "network.target" ];
   after = [ "network.target" ];
   wantedBy = [ "default.target" ];
   wantedBy = [ "default.target" ];
   description = "My Cool User Service";
   description = "Мой Классный Пользовательский Сервис";
   serviceConfig = {
   serviceConfig = {
       Type = "simple";
       Type = "simple";
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};
};
</syntaxhighlight>
</syntaxhighlight>
</div>
<div lang="en" dir="ltr" class="mw-content-ltr">
<div lang="en" dir="ltr" class="mw-content-ltr">
By default, user services will be stopped when the user logs out and will start again when the user logs back in due to us setting {{ic|<nowiki>wantedBy = [ "default.target" ]</nowiki>}} in the example.
By default, user services will be stopped when the user logs out and will start again when the user logs back in due to us setting {{ic|<nowiki>wantedBy = [ "default.target" ]</nowiki>}} in the example.

Revision as of 16:44, 5 August 2024

Systemd supports running a separate instance of systemd for a given user, allowing the user to control their own services. See here for more information: https://wiki.archlinux.org/title/Systemd/User

In NixOS, a user service can be expressed with systemd.user.services.<name>, as documented here: https://search.nixos.org/options?query=systemd.user.services

This may be useful if you want a user to be able to start, stop, and restart their own instance of a service without needing to make the user a sudoer.

Here is an example:

systemd.user.services.my-cool-user-service = {
  enable = true;
  after = [ "network.target" ];
  wantedBy = [ "default.target" ];
  description = "Мой Классный Пользовательский Сервис";
  serviceConfig = {
      Type = "simple";
      ExecStart = ''/my/cool/user/service'';
  };
};

By default, user services will be stopped when the user logs out and will start again when the user logs back in due to us setting wantedBy = [ "default.target" ] in the example.

Keeping user services running after logout

If you need a user service to stay running after a user logs out, you need to enable "lingering" by setting users.users.<username>.linger = true;

You'll also likely want to change to wantedBy = [ "multi-user.target" ]; so the service starts at boot time.