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# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{ config, pkgs, lib, ... }:
{
imports =
[ # Include the results of the hardware scan.
./odin/hw.nix
./users.nix
./custom/uucp.nix
./custom/uucp-mediaserver.nix
./custom/borgbackup.nix
];
# Use the GRUB 2 boot loader.
boot.loader.grub.enable = true;
boot.loader.grub.version = 2;
# Define on which hard drive you want to install Grub.
boot.loader.grub.device = "/dev/disk/by-id/ata-MKNSSDCR60GB_MK130619AS1031770";
networking.hostName = "odin"; # Define your hostname.
# Select internationalisation properties.
i18n = {
consoleKeyMap = "dvp";
defaultLocale = "en_US.UTF-8";
};
# Set your time zone.
time.timeZone = "Europe/Berlin";
environment.systemPackages = with pkgs; [
pythonPackages.magic-wormhole
tmux
mosh
quota
git
(callPackage ./utils/nix/rebuild-system.nix {})
];
programs.zsh.enable = true;
services.openssh = {
enable = true;
passwordAuthentication = false;
challengeResponseAuthentication = false;
extraConfig = ''
AllowGroups ssh
'';
};
users.groups."ssh" = {
members = ["uucp" "root"];
};
networking.firewall = {
enable = true;
allowPing = true;
allowedTCPPorts = [ 22 # ssh
139 445 # samba
];
allowedUDPPorts = [ 137 138 ]; # samba
allowedUDPPortRanges = [ { from = 60000; to = 61000; } # mosh
];
};
users.extraUsers.root = let
template = import ./users/gkleen.nix;
in {
inherit (template) shell;
openssh.authorizedKeys.keyFiles = template.openssh.authorizedKeys.keyFiles;
};
services.journald = {
rateLimitBurst = 0;
};
services.haveged.enable = true;
services.uucp = {
enable = true;
nodeName = "odin";
remoteNodes = {
"ymir" = {
publicKeys = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGANj+LJ4CI6VrAgBRocKCGq74kZnwD1PdKr/gdlfVr1 uucp@ymir"];
hostnames = ["ymir.yggdrasil.li" "ymir.niflheim.yggdrasil"];
commands = ["rmail"];
};
"hel" = {
publicKeys = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKD8ycFGfVkBL9wjA5Kc33cl6Qt5K2505G/38oH8Cy/e uucp@hel"];
hostnames = ["hel.asgard.yggdrasil" "hel.midgard.yggdrasil"];
commands = ["rmail"];
};
};
media-server = {
enable = true;
remoteNodes = [ "hel" ];
};
commandPath = [ "${pkgs.rmail}/bin" ];
};
users.groups."media" = {
members = [ "uucp" ];
};
services.postfix = {
enable = true;
enableSmtp = false;
enableSubmission = false;
setSendmail = true;
networksStyle = "host";
hostname = "odin.asgard.yggdrasil";
recipientDelimiter = "+";
postmasterAlias = "gkleen";
rootAlias = "gkleen";
extraAliases = ''
uucp: gkleen
'';
destination = [''regexp:${pkgs.writeText "destination" ''
/\.?localdomain$/ ACCEPT
/^localhost$/ ACCEPT
/\.?odin(\.asgard\.yggdrasil)?$/ ACCEPT
''}''];
config = {
default_transport = "uucp:ymir";
message_size_limit = "0";
mailbox_size_limit = "0";
mail_spool_directory = "/srv/mail";
luser_relay = ''postmaster''${recipient_delimiter}''${local:unknown}'';
};
masterConfig = {
uucp = {
type = "unix";
private = true;
privileged = true;
chroot = false;
command = "pipe";
args = [ "flags=Fqhu" "user=uucp" ''argv=${config.security.wrapperDir}/uux -z -a $sender - $nexthop!rmail ($recipient)'' ];
};
};
networks = ["127.0.0.0/8" "[::ffff:127.0.0.0]/104" "[::1]/128" "10.141.0.0/16"];
};
services.borgbackup = {
snapshots = "lvm";
prefix = "automatic.yggdrasil.asgard.odin.";
targets = {
"munin" = {
repo = "borg.munin:borg";
paths = [
{ VG = "raid6"; LV = "mail"; }
{ VG = "raid6"; LV = "home"; }
{ VG = "raid6"; LV = "media"; }
{ VG = "raid6"; LV = "root"; }
{ VG = "ssd-raid1"; LV = "root"; }
];
prune = lib.genAttrs
["raid6/mail" "raid6/home" "raid6/media" "raid6/root" "ssd-raid1/root"]
(name: [
"--keep-within" "24H"
"--keep-daily" "31"
"--keep-monthly" "12"
"--keep-yearly" "-1"
]);
};
};
};
services.samba = {
enable = true;
shares = {
home = {
comment = "Home Directories";
browesable = true;
"valid users" = "%S";
writable = true;
};
};
};
system.autoUpgrade.enable = true;
system.stateVersion = "18.09";
systemd.services."nixos-upgrade" = {
path = with pkgs; [ git ];
preStart = ''
git -C /etc/nixos pull --recurse-submodules
'';
};
}
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