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83 lines
2.8 KiB
Nix
83 lines
2.8 KiB
Nix
{ config, pkgs, ... }:
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let
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my-python-packages = ps: with ps; [
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# netcup-dns is not (yet) packaged, thus we build it from PyPI
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(
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buildPythonPackage rec {
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pname = "netcup-dns";
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version = "0.2.2";
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# https://nixos.wiki/wiki/Packaging/Python#Fix_Missing_setup.py
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format = "pyproject";
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src = fetchPypi {
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inherit pname version;
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sha256 = "sha256-/2dzrFkNrHDkVJd1witphlIXdHxJ573USzj6JwUscto=";
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};
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propagatedBuildInputs = [
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# Dependencies
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pkgs.python3Packages.requests
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pkgs.python3Packages.nc-dnsapi
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# Build dependencies
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build
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twine
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];
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}
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)
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];
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in
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{
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# Install netcup-dns Python packages.
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environment.systemPackages = [
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(pkgs.python3.withPackages my-python-packages)
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];
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# Configure netcup-dns.
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# Create file `/etc/netcup-dns/netcup-dns-95191.json`.
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deployment.keys."netcup-dns-95191.json" = {
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keyFile = ../secrets/netcup-dns.json;
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destDir = "/etc/netcup-dns";
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user = "netcup-dns";
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group = "netcup-dns";
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};
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# Create netcup-dns daemon user.
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users.users."netcup-dns" = {
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isSystemUser = true;
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group = "netcup-dns";
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description = "netcup-dns daemon";
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};
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users.groups."netcup-dns" = {};
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# Create netcup-dns timer.
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systemd.timers."netcup-dns" = {
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wantedBy = [ "timers.target" ];
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partOf = [ "netcup-dns.service" ];
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timerConfig = {
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OnBootSec = "0m";
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OnUnitInactiveSec = "3m";
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AccuracySec = "15s";
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RandomizedDelaySec = "15s";
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};
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};
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systemd.services."netcup-dns" = {
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serviceConfig = {
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Type = "oneshot";
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PrivateTmp = true;
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User = "netcup-dns";
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Nice = 19;
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IOSchedulingClass = "idle";
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# Create directory `/run/netcup-dns`.
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# `netcup-dns` uses it for caching.
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# For systemd to create this directory automatically, `PermissionsStartOnly` is required: https://unix.stackexchange.com/questions/354583/how-to-automatically-create-a-runtime-folder-with-a-systemd-service-or-tmpfiles#comment628290_354583
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RuntimeDirectoryMode = "0755";
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RuntimeDirectory = "netcup-dns";
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PermissionsStartOnly = true;
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# Since we use `/run/netcup-dns` for caching between subsequent runs of `netcup-dns`, it should be kept and not deleted.
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# Man page section `RuntimeDirectoryPreserve`:
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# If set to yes, then the directories are not removed when the service is stopped. Note that since the runtime directory /run/ is a mount point of "tmpfs", then for system services the directories specified in RuntimeDirectory= are removed when the system is rebooted.
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RuntimeDirectoryPreserve = true;
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ExecStart = "${pkgs.python3.withPackages my-python-packages}/bin/netcup-dns --cache-directory /run/netcup-dns";
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};
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};
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}
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