torjus/nixos-servers

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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