dotfiles/nixos/hosts/vps-relay.nix

96 lines
3.2 KiB
Nix

# Hetzner Cloud VPS — public reverse proxy into the clan.
#
# Role: terminates public TLS via Caddy + Let's Encrypt, reverse-proxies
# each declared subdomain over ZeroTier to the appropriate homelab host.
# No navidrome/bbbot data ever hits disk here; this box is a relay.
{ config, lib, pkgs, ... }:
{
imports = [ ../disko-cloud.nix ];
nixpkgs.hostPlatform = "x86_64-linux";
# Hetzner Cloud vServers boot in BIOS mode (confirmed via rescue:
# /sys/firmware/efi doesn't exist, product_name=vServer). systemd-boot
# is UEFI-only, so use GRUB with BIOS MBR support instead.
boot.loader.grub = {
enable = true;
device = "/dev/sda";
efiSupport = false;
};
# Hetzner Cloud cx23 uses QEMU virtio-scsi for the disk and virtio-net
# for the NIC. Without these modules in initrd, the kernel can't find
# the root partition and hangs during boot.
boot.initrd.availableKernelModules = [
"virtio_pci"
"virtio_scsi"
"virtio_net"
"virtio_blk"
"ata_piix"
"sd_mod"
"sr_mod"
];
boot.kernelModules = [ "virtio_pci" "virtio_scsi" "virtio_net" ];
# Cloud provisioners add the initial root SSH key via cloud-init or
# equivalent; we don't run cloud-init. All config is baked at install.
networking.hostName = "vps-relay";
networking.useDHCP = lib.mkDefault true;
time.timeZone = "Europe/Copenhagen";
# --- User + SSH ------------------------------------------------------
users.users.danny = {
isNormalUser = true;
extraGroups = [ "wheel" ];
openssh.authorizedKeys.keys = [
# Same pubkey used to reach sunken-ship; set at install via clan.
"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKW/akfIiVU5o63YrTAJVZhMj7kXfYHOnXDtlpVFW7pf danny@sunken-ship"
];
};
users.users.root.openssh.authorizedKeys.keys =
config.users.users.danny.openssh.authorizedKeys.keys;
security.sudo.wheelNeedsPassword = false;
services.openssh = {
enable = true;
settings = {
PasswordAuthentication = false;
KbdInteractiveAuthentication = false;
PermitRootLogin = "prohibit-password";
};
};
# --- Firewall --------------------------------------------------------
# Public: 22 (SSH), 80 + 443 (Caddy).
# ZT interface: trusted (set in the clan ZT module).
networking.firewall.enable = true;
networking.firewall.allowedTCPPorts = [ 22 80 443 ];
# --- Caddy reverse proxy --------------------------------------------
# Subdomains → clan backends over ZeroTier. IPs are sunken-ship's /
# phantom-ship's ZT IPv6; brackets required in URLs.
services.caddy = {
enable = true;
email = "powerhouseplayer@gmail.com";
# Tell ACME to use Let's Encrypt's production endpoint (Caddy default).
virtualHosts = {
"navidrome.dannydannydanny.me".extraConfig = ''
reverse_proxy http://[fdd5:53a2:de33:d269:6499:93d5:53a2:de33]:4533
'';
"bbbot.dannydannydanny.me".extraConfig = ''
reverse_proxy http://[fdd5:53a2:de33:d269:6499:93d5:53a2:de33]:8080
'';
};
};
# --- Basic tooling ---------------------------------------------------
environment.systemPackages = with pkgs; [
git
htop
tcpdump
];
nix.settings.experimental-features = [ "nix-command" "flakes" ];
system.stateVersion = "25.11";
}