45cf7be37a
- Copy the whole webapp/ tree (minus __pycache__) in build-usb.sh and build-proxmox-iso.sh, so config, services/, views/ and blancco_evidence_monthly.py reach the server. - sfdisk --append failure now aborts; the CIDATA partition is the one starting exactly at the computed sector, and nothing that starts before it is ever formatted (the old fallback hit the ISO's EFI partition). - Volume id and El Torito load sizes come from the ISO (xorriso -report_el_torito as_mkisofs); grub.cfg must contain autoinstall after patching. - --image FILE SIZE|auto builds the same layout in a file without root (mkfs.vfat -C + mtools, sfdisk on the file). Plus --payload-root, --skip-enrollment/-bios/-drivers/-boot-tools, --yes. - tests/vm: libvirt harness (pxetest-server, pxetest-client, isolated pxetest-imaging network) with fetch-iso/build-image/create/start/ status/stop/destroy.
3.4 KiB
pxetest VM harness
Proves a new PXE server can be built from this repo, in two libvirt VMs on a laptop, without root and without touching a real network.
Topology
| Object | What |
|---|---|
pxetest-imaging |
libvirt network, bridge virbr-pxetest. No <forward>, no <ip>: the host has no address on it and libvirt runs no DHCP there. Only VM taps are on the bridge. |
default |
libvirt NAT, 192.168.122.0/24. Stands in for the GE/corp network. |
pxetest-server |
2 vCPU, 4 GiB, q35 + OVMF Secure Boot (MS keys), 60G thin qcow2 (vda, boot 1), the USB image as a USB disk (sda, boot 2). |
pxetest-client |
2 vCPU, 2 GiB, OVMF Secure Boot (MS keys), 1G blank disk, network boot first (UEFI IPv4 PXE, virtio-net, OVMF driver, no option ROM). |
NIC MACs (fixed):
| VM | NIC | MAC | Network | Playbook var |
|---|---|---|---|---|
| server | GE | 52:54:00:9e:10:01 |
default NAT |
pxe_ge_mac / corp_nic_mac |
| server | imaging | 52:54:00:9e:10:02 |
pxetest-imaging |
pxe_imaging_mac / pxe_nic_mac |
| client | - | 52:54:00:9e:10:03 |
pxetest-imaging |
- |
The disk boots before the USB on purpose: a blank disk falls through to the installer, and after the install the server boots its disk instead of re-running autoinstall. CIDATA stays attached for the first-boot playbook.
Never attach a pxetest VM to a physical NIC, a host bridge with physical
ports, or macvtap: the server's dnsmasq serves DHCP/PXE as 172.16.9.1.
create.sh, start.sh and status.sh check the isolation and refuse to
continue if pxetest-imaging ever gains a <forward>, an <ip>, a host
IPv4 address or a non-tap bridge port.
Run it
export PXETEST_CACHE=~/.cache/pxetest # ISO + image (about 10 GB)
export PXETEST_PAYLOAD_ROOT=/home/camp/projects/pxe # checkout holding offline-packages/, boot-files/, ...
tests/vm/fetch-iso.sh # Ubuntu 24.04.5 live-server ISO, SHA256SUMS-verified
tests/vm/build-image.sh # build-usb.sh --image, upload as volume pxetest-usb.img
tests/vm/create.sh # network, volumes, both VMs (prints the MAC pins)
tests/vm/start.sh server # autoinstall, reboot, first-boot playbook
tests/vm/status.sh --shot /tmp/pxetest-shots # states, leases, screenshots
tests/vm/start.sh client # once the server playbook is done
tests/vm/stop.sh # ACPI shutdown both, keep them defined
tests/vm/destroy.sh # remove every pxetest-* object
build-image.sh skips enrollment/, bios-staging/, drivers-staging/ and
boot-tools/ by default; --with-enrollment and --with-boot-tools add
them back, --size 20G fixes the image size (default auto). If the host
has no sfdisk or mtools, the debs are extracted into
$PXETEST_CACHE/tools (no install, no root).
Watch the server with virt-viewer -c qemu:///system pxetest-server (VNC on
127.0.0.1) or screenshots. On the installed system, first-boot output goes
to /var/log/first-boot.log. Once the GE NIC takes a DHCP lease on the NAT
network, status.sh shows its address and ssh pxe@<address> works from
the host.
Memory: server 4 GiB + client 2 GiB. Keep other VMs (win11) off while both run, and stop them when done.