pyrox.dev
1{
2 config,
3 pkgs,
4 lib,
5 ...
6}:
7
8# image metadata:
9# hw_firmware_type=uefi
10
11let
12 inherit (lib) mkIf mkDefault;
13 cfg = config.openstack;
14 metadataFetcher = import ./openstack-metadata-fetcher.nix {
15 targetRoot = "/";
16 wgetExtraOptions = "--retry-connrefused";
17 };
18in
19{
20 imports = [
21 ../profiles/qemu-guest.nix
22
23 # Note: While we do use the headless profile, we also explicitly
24 # turn on the serial console on tty1 below.
25 # Note that I could not find any documentation indicating tty1 was
26 # the correct choice. I picked tty1 because that is what one
27 # particular host was using.
28 ../profiles/headless.nix
29
30 # The Openstack Metadata service exposes data on an EC2 API also.
31 ./ec2-data.nix
32 ./amazon-init.nix
33 ];
34
35 config = {
36 fileSystems."/" = mkIf (!cfg.zfs.enable) {
37 device = "/dev/disk/by-label/nixos";
38 fsType = "ext4";
39 autoResize = true;
40 };
41
42 fileSystems."/boot" = mkIf (cfg.efi || cfg.zfs.enable) {
43 # The ZFS image uses a partition labeled ESP whether or not we're
44 # booting with EFI.
45 device = "/dev/disk/by-label/ESP";
46 fsType = "vfat";
47 };
48
49 boot.growPartition = true;
50 boot.kernelParams = [ "console=tty1" ];
51 boot.loader.grub.device = if (!cfg.efi) then "/dev/vda" else "nodev";
52 boot.loader.grub.efiSupport = cfg.efi;
53 boot.loader.grub.efiInstallAsRemovable = cfg.efi;
54 boot.loader.timeout = 1;
55 boot.loader.grub.extraConfig = ''
56 serial --unit=1 --speed=115200 --word=8 --parity=no --stop=1
57 terminal_output console serial
58 terminal_input console serial
59 '';
60
61 services.zfs.expandOnBoot = mkIf cfg.zfs.enable (lib.mkDefault "all");
62 boot.zfs.devNodes = mkIf cfg.zfs.enable "/dev/";
63
64 # Allow root logins
65 services.openssh = {
66 enable = true;
67 settings.PermitRootLogin = "prohibit-password";
68 settings.PasswordAuthentication = mkDefault false;
69 };
70
71 # Enable the serial console on tty1
72 systemd.services."serial-getty@tty1".enable = true;
73
74 # Force getting the hostname from Openstack metadata.
75 networking.hostName = mkDefault "";
76
77 systemd.services.openstack-init = {
78 path = [ pkgs.wget ];
79 description = "Fetch Metadata on startup";
80 wantedBy = [ "multi-user.target" ];
81 before = [
82 "apply-ec2-data.service"
83 "amazon-init.service"
84 ];
85 wants = [ "network-online.target" ];
86 after = [ "network-online.target" ];
87 script = metadataFetcher;
88 restartIfChanged = false;
89 unitConfig.X-StopOnRemoval = false;
90 serviceConfig = {
91 Type = "oneshot";
92 RemainAfterExit = true;
93 };
94 };
95 };
96}