Armael/restic-alarm
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define a nixos module, defining a systemd service and timer

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Armaël Guéneau 2024-04-11 13:41:29 +02:00
parent 7a4818c60a
commit ca1f724716
1 changed files with 53 additions and 2 deletions
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55
flake.nix
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@ -9,7 +9,7 @@
nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
};
outputs = inputs: with inputs;
outputs = { self, nixpkgs, cargo2nix, flake-utils }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs {
@ -28,5 +28,56 @@
default = packages.restic-alarm;
};
}
);
) // rec {
nixosModules.restic-alarm = { config, lib, pkgs, ... }:
with lib;
let
cfg = config.custom.restic-alarm;
in
{
options.custom.restic-alarm = {
enable = mkEnableOption (lib.mdDoc "restic-alarm: send alarms for inactive backups");
env_file = mkOption {
type = types.path;
description = lib.mdDoc
"The file containing the environment variables to pass to restic-alarm, for e.g. S3 access keys";
};
};
config = mkIf cfg.enable {
systemd.services.restic-alarm =
let
pkg = self.packages.${pkgs.system}.default;
in {
description = "restic-alarm: send alarms for inactive backups";
after = [ "network.target" "network-online.target" ];
wants = [ "network.target" "network-online.target" ];
wantedBy = [ "multi-user.target" ];
restartTriggers = [ cfg.env_file ];
serviceConfig = {
ExecStart = "${pkg}/bin/restic-alarm";
DynamicUser = true;
EnvironmentFile = "${cfg.env_file}";
};
};
systemd.timers.restic-alarm = {
partOf = [ "restic-alarm.service" ];
wantedBy = [ "timers.target" ];
after = [ "network-online.target" ];
timerConfig = {
Unit = "restic-alarm.service";
Persistent = true;
# every 6 hours
OnCalendar = "*-*-* 00/6:00:00";
RandomizedDelaySec = "1h";
FixedRandomDelay = true;
};
};
};
};
nixosModules.default = nixosModules.restic-alarm;
};
}