{ config, pkgs, ... }:

{
  imports =
    [
      ./hardware-configuration.nix
      ../../configuration/common
      ../../configuration/proxmox-vm
    ];

  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;
  boot.loader.grub.device = "/dev/vda";

  networking.hostName = "backup-4";

  networking.useDHCP = false;
  networking.interfaces.ens18.ipv6.addresses = [ { address = "2001:638:904:ffcb::c"; prefixLength = 64; } ];
  networking.defaultGateway6 = { address = "2001:638:904:ffcb::1"; interface = "ens18"; };
  networking.nameservers = [ "2001:638:904:ffcc::3" "2001:638:904:ffcc::4" "141.24.40.3" "141.24.40.4" ];

  services.rsnapshot = {
    enable = true;
    extraConfig = ''
      snapshot_root	/mnt/backup-4/
      rsync_short_args	-rltD
      retain	alpha	14
      ssh_args	-o BatchMode=yes -o IdentityFile=/var/src/secrets/rsnapshot/id_rsa
      backup	backup-replication@clerie-backup.net.clerie.de:/clerie-backup-replication/	clerie-backup/
    '';
    # rsync_short_args
    # -a -> -rlptgoD
    # -rltD ist wie -a nur das alle Dateiberechtigungen und Besitzangabe ignoriert werden
    cronIntervals = {
      alpha = "15 6 * * * ";
    };
  };

  clerie.monitoring = {
    enable = true;
    id = "205";
    pubkey = "CLEF5hLdjwPqfU1oaM16fusJ705iNzUBxYsb4/YuGw4=";
  };

  system.stateVersion = "21.03";
}