pyrox.dev
1{ config, pkgs, lib, ... }:
2
3# image metadata:
4# hw_firmware_type=uefi
5
6let
7 inherit (lib) mkIf mkDefault;
8 cfg = config.openstack;
9 metadataFetcher = import ./openstack-metadata-fetcher.nix {
10 targetRoot = "/";
11 wgetExtraOptions = "--retry-connrefused";
12 };
13in
14{
15 imports = [
16 ../profiles/qemu-guest.nix
17
18 # Note: While we do use the headless profile, we also explicitly
19 # turn on the serial console on tty1 below.
20 # Note that I could not find any documentation indicating tty1 was
21 # the correct choice. I picked tty1 because that is what one
22 # particular host was using.
23 ../profiles/headless.nix
24
25 # The Openstack Metadata service exposes data on an EC2 API also.
26 ./ec2-data.nix
27 ./amazon-init.nix
28 ];
29
30 config = {
31 fileSystems."/" = mkIf (!cfg.zfs.enable) {
32 device = "/dev/disk/by-label/nixos";
33 fsType = "ext4";
34 autoResize = true;
35 };
36
37 fileSystems."/boot" = mkIf (cfg.efi || cfg.zfs.enable) {
38 # The ZFS image uses a partition labeled ESP whether or not we're
39 # booting with EFI.
40 device = "/dev/disk/by-label/ESP";
41 fsType = "vfat";
42 };
43
44 boot.growPartition = true;
45 boot.kernelParams = [ "console=tty1" ];
46 boot.loader.grub.device = if (!cfg.efi) then "/dev/vda" else "nodev";
47 boot.loader.grub.efiSupport = cfg.efi;
48 boot.loader.grub.efiInstallAsRemovable = cfg.efi;
49 boot.loader.timeout = 1;
50 boot.loader.grub.extraConfig = ''
51 serial --unit=1 --speed=115200 --word=8 --parity=no --stop=1
52 terminal_output console serial
53 terminal_input console serial
54 '';
55
56 services.zfs.expandOnBoot = mkIf cfg.zfs.enable (lib.mkDefault "all");
57 boot.zfs.devNodes = mkIf cfg.zfs.enable "/dev/";
58
59 # Allow root logins
60 services.openssh = {
61 enable = true;
62 settings.PermitRootLogin = "prohibit-password";
63 settings.PasswordAuthentication = mkDefault false;
64 };
65
66 users.users.root.initialPassword = "foobar";
67
68 # Enable the serial console on tty1
69 systemd.services."serial-getty@tty1".enable = true;
70
71 # Force getting the hostname from Openstack metadata.
72 networking.hostName = mkDefault "";
73
74 systemd.services.openstack-init = {
75 path = [ pkgs.wget ];
76 description = "Fetch Metadata on startup";
77 wantedBy = [ "multi-user.target" ];
78 before = [ "apply-ec2-data.service" "amazon-init.service" ];
79 wants = [ "network-online.target" ];
80 after = [ "network-online.target" ];
81 script = metadataFetcher;
82 restartIfChanged = false;
83 unitConfig.X-StopOnRemoval = false;
84 serviceConfig = {
85 Type = "oneshot";
86 RemainAfterExit = true;
87 };
88 };
89 };
90}