my-homelab-configs/bootstrap/provisioning

Homelab Provisioning Layer

This layer prepares a Debian server to PXE boot a Debian 13 arm64 VM and install a reusable worker-node golden image for Pimox on Orange Pi 5 Plus.

It is intentionally separate from ./lab.sh up. Run it manually from the Debian homelab server only when you want to create or refresh the provisioning service.

What It Installs

• dnsmasq for proxyDHCP and TFTP
• nginx for preseed, installer, and guest-prep scripts
• Debian 13 arm64 netboot assets under /opt/homelab-provisioning
• a preseed file for unattended Debian install
• guest prep scripts that install Kubernetes tools, containerd, qemu guest agent, cloud-init, OpenEBS dependencies, cgroup prerequisites, swap disablement, and the local registry trust path
• kernel boot options for cgroup support through TF_VAR_kernel_cgroup_boot_options
• a template sealing script at /usr/local/sbin/homelab-prepare-template.sh inside the installed VM that verifies cgroup boot state before sealing

Apply From Debian

Find the LAN interface on the Debian server:

ip -br addr

Apply the provisioning layer:

cd ~/my-homelab-configs
tofu -chdir=bootstrap/provisioning init
TF_VAR_provisioning_interface=enp1s0 tofu -chdir=bootstrap/provisioning apply

Override TF_VAR_provisioning_interface with the interface that serves the Pimox VM network.

The default VM user is jv. The account uses /home/jv/.ssh/id_ed25519.pub from the Debian server when that key exists, and the password is locked by default. Set TF_VAR_template_user_ssh_authorized_keys or TF_VAR_template_user_password_hash before applying if you want different access.

Clones should get their intended hostname through cloud-init or the later clone automation. If they boot with the template hostname, the first-boot service generates a unique fallback name using TF_VAR_clone_hostname_prefix.

Pimox VM Template Flow

Create an arm64 VM in Pimox with UEFI firmware, a virtio disk, and a NIC on the same LAN as the Debian provisioning host. Put network boot first.

PXE should load grubaa64.efi, boot the Debian installer, fetch the preseed from http://192.168.100.68:8088/preseed/debian13-arm64-worker.cfg, and install the golden image.

If your Pimox firmware needs a different Debian arm64 EFI loader, override TF_VAR_pxe_boot_file.

After the first successful boot, run this inside the VM before converting it to a template:

sudo /usr/local/sbin/homelab-prepare-template.sh
sudo poweroff

Convert the powered-off VM to a Pimox template. Clone it for each new worker, set a unique hostname and IP address through cloud-init or DHCP reservation, then add it to bootstrap/cluster/variables.tf or a .tfvars file:

worker_nodes = {
  pimox01 = {
    host         = "192.168.100.90"
    user         = "jv"
    node_name    = "pimox01"
    ssh_key_path = "/home/jv/.ssh/id_ed25519"
  }
}

Run the cluster layer from the Debian homelab server after the cloned VM is reachable over SSH.

Optional Pimox Automation

Set TF_VAR_pimox_template_builder_enabled=true to have this layer SSH into the Pimox host, create the template-build VM with qm, boot it from PXE, wait for the installed VM over SSH, run /usr/local/sbin/homelab-prepare-template.sh, power it off, switch boot order back to disk first, and run qm template.

The automation needs a predictable temporary IP for the installed VM. Use a DHCP reservation for the generated or configured MAC address, then set:

export TF_VAR_pimox_template_builder_enabled=true
export TF_VAR_pimox_host=192.168.100.91
export TF_VAR_pimox_template_build_host=192.168.100.90

Defaults match the observed Pimox VM shape: OVMF firmware, virtio networking, virtio-scsi disk, vmbr0, local storage, 2 vCPU, and 2 GiB memory. Override TF_VAR_pimox_template_scsi0, TF_VAR_pimox_template_efidisk0, TF_VAR_pimox_template_cores, or TF_VAR_pimox_template_memory if the Orange Pi storage layout changes.