Commit graph

18 commits

Author SHA1 Message Date
William A. Kennington III 4d193b7262 systemd: Support reload scripts 2014-09-15 20:04:49 -07:00
Eelco Dolstra 073351a5cf Refactor unit option declarations
This gets rid of some duplication.
2014-04-17 23:35:05 +02:00
Eelco Dolstra 179acfb664 Allow upstream systemd units to be extended
If you define a unit, and either systemd or a package in
systemd.packages already provides that unit, then we now generate a
file /etc/systemd/system/<unit>.d/overrides.conf. This makes it
possible to use upstream units, while allowing them to be customised
from the NixOS configuration. For instance, the module nix-daemon.nix
now uses the units provided by the Nix package. And all unit
definitions that duplicated upstream systemd units are finally gone.

This makes the baseUnit option unnecessary, so I've removed it.
2014-04-17 18:52:31 +02:00
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00
Eelco Dolstra d2155649af Merge branch 'containers'
Fixes #2105.
2014-04-10 15:55:51 +02:00
aszlig 9d8a8126e9
systemd: Add support for path units.
This allows to define systemd.path(5) units, for example like this:

{
  systemd = let
    description = "Set Key Permissions for xyz.key";
  in {
    paths.set-key-perms = {
      inherit description;
      before = [ "network.target" ];
      wantedBy = [ "multi-user.target" ];
      pathConfig.PathChanged = "/run/keys/xyz.key";
    };

    services.set-key-perms = {
      inherit description;
      serviceConfig.Type = "oneshot";
      script = "chown myspecialkeyuser /run/keys/xyz.key";
    };
  };
}

The example here is actually useful in order to set permissions for the
NixOps keys target to ensure those permisisons aren't reset whenever the
key file is reuploaded.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2014-03-31 12:33:25 +02:00
Eelco Dolstra 511b86d22d Add an option to reload rather than restart changed units 2014-03-17 15:02:53 +01:00
Eelco Dolstra 207c881df9 Don't include superfluous lines in generated units 2014-03-12 18:52:11 +01:00
Eelco Dolstra 691c0cd72e systemd: Allow customisation of upstream units
You can now say:

  systemd.services.foo.baseUnit = "${pkgs.foo}/.../foo.service";

This will cause NixOS' generated foo.service file to include
foo.service from the foo package.  You can then apply local
customization in the usual way:

  systemd.services.foo.serviceConfig.MemoryLimit = "512M";

Note however that overriding options in the original unit may not
work.  For instance, you cannot override ExecStart.

It's also possible to customize instances of template units:

  systemd.services."getty@tty4" =
    { baseUnit = "/etc/systemd/system/getty@.service";
      serviceConfig.MemoryLimit = "512M";
    };

This replaces the unit options linkTarget (which didn't allow
customisation) and extraConfig (which did allow customisation, but in
a non-standard way).
2014-03-12 18:52:10 +01:00
Eelco Dolstra 14cd8bc248 Allow services to specify a pre-stop script 2013-11-26 18:24:55 +01:00
Eelco Dolstra 8951be2d80 Allow overrides to work for unit options 2013-11-18 18:04:16 +01:00
Eelco Dolstra 33cb0bbb4b Use types.lines for script/preStart/postStart/postStop 2013-11-18 18:04:16 +01:00
Eelco Dolstra 5620e69b5d Apply better type checking to unitConfig/serviceConfig/...
In particular, complain if two modules define the same systemd option.
2013-11-18 18:04:16 +01:00
Eelco Dolstra 70a2c54527 Strictly check the arguments to mkOption
And fix various instances of bad arguments.
2013-10-30 15:35:09 +01:00
Eelco Dolstra 862e3dd977 Substitute "types.uniq types.string" -> "types.str" 2013-10-30 14:57:42 +01:00
Eelco Dolstra d5047faede Remove uses of the "merge" option attribute
It's redundant because you can (and should) specify an option type, or
an apply function.
2013-10-28 22:45:56 +01:00
Eelco Dolstra a40583e7e4 Fix bogus mkOption types
Among others, systemd unit options were not being type-checked because
of this.  mkOption should really check its arguments better...
2013-10-28 22:45:56 +01:00
Eelco Dolstra 5c1f8cbc70 Move all of NixOS to nixos/ in preparation of the repository merge 2013-10-10 13:28:20 +02:00
Renamed from modules/system/boot/systemd-unit-options.nix (Browse further)