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nixos-servers/hosts/template2/configuration.nix
Torjus Håkestad 6f7aee3444
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bootstrap: implement automated VM bootstrap mechanism for Phase 3
Add systemd service that automatically bootstraps freshly deployed VMs
with their host-specific NixOS configuration from the flake repository.

Changes:
- hosts/template2/bootstrap.nix: New systemd oneshot service that:
  - Runs after cloud-init completes (ensures hostname is set)
  - Reads hostname from hostnamectl (set by cloud-init from Terraform)
  - Checks network connectivity via HTTPS (curl)
  - Runs nixos-rebuild boot with flake URL
  - Reboots on success, fails gracefully with clear errors on failure

- hosts/template2/configuration.nix: Configure cloud-init datasource
  - Changed from NoCloud to ConfigDrive (used by Proxmox)
  - Allows cloud-init to receive config from Proxmox

- hosts/template2/default.nix: Import bootstrap.nix module

- terraform/vms.tf: Add cloud-init disk to VMs
  - Configure disks.ide.ide2.cloudinit block
  - Removed invalid cloudinit_cdrom_storage parameter
  - Enables Proxmox to inject cloud-init configuration

- TODO.md: Mark Phase 3 as completed

This eliminates the manual nixos-rebuild step from the deployment workflow.
VMs now automatically pull and apply their configuration on first boot.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-02-01 10:38:35 +01:00

71 lines
1.8 KiB
Nix

{
config,
lib,
pkgs,
...
}:
{
imports = [
./hardware-configuration.nix
../../system/sshd.nix
];
# Root user with no password but SSH key access for bootstrapping
users.users.root = {
hashedPassword = "";
openssh.authorizedKeys.keys = [
"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAwfb2jpKrBnCw28aevnH8HbE5YbcMXpdaVv2KmueDu6 torjus@gunter"
];
};
# Proxmox image-specific configuration
# Configure storage to use local-zfs instead of local-lvm
image.modules.proxmox = {
proxmox.qemuConf.virtio0 = lib.mkForce "local-zfs:vm-9999-disk-0";
proxmox.qemuConf.boot = lib.mkForce "order=virtio0";
proxmox.cloudInit.defaultStorage = lib.mkForce "local-zfs";
};
# Configure cloud-init to use ConfigDrive datasource (used by Proxmox)
services.cloud-init.settings = {
datasource_list = [ "ConfigDrive" "NoCloud" ];
};
boot.loader.grub.enable = true;
boot.loader.grub.device = "/dev/vda";
networking.hostName = "nixos-template2";
networking.domain = "home.2rjus.net";
networking.useNetworkd = true;
networking.useDHCP = false;
services.resolved.enable = true;
systemd.network.enable = true;
systemd.network.networks."ens18" = {
matchConfig.Name = "ens18";
networkConfig.DHCP = "ipv4";
linkConfig.RequiredForOnline = "routable";
};
time.timeZone = "Europe/Oslo";
nix.settings.experimental-features = [
"nix-command"
"flakes"
];
nix.settings.tarball-ttl = 0;
environment.systemPackages = with pkgs; [
age
vim
wget
git
];
# Open ports in the firewall.
# networking.firewall.allowedTCPPorts = [ ... ];
# networking.firewall.allowedUDPPorts = [ ... ];
# Or disable the firewall altogether.
networking.firewall.enable = false;
system.stateVersion = "25.11";
}