Sites no longer need either MAC in site-vars.
pxe_nic_mac empty: before anything changes, the playbook runs
pxe-pick-nic --auto. It takes the one wired port with a link, accepts it
only if pxe-nic-check calls it isolated (no LLDP/CDP/802.1X, no other
DHCP server, at most 10 hosts heard in 65 s), and pins it. The choice is
saved in /etc/pxe-server/nic-pick.conf and never re-guessed at boot.
When it cannot tell (no link, two links, not isolated) nothing changes,
and the console banner says why and to run sudo pxe-pick-nic: pull the
imaging cable and plug it back in, and the port that blinked is the
imaging one. Both helpers are installed before the pick, so that works
after a refused first boot. The site's corp domains and allowed
switches are passed to the check.
corp_nic_mac empty: every other wired port (en*, eth*) is a catch-all
DHCP client, so GE can be plugged in at install or later.
- dnsmasq stays pinned with interface=pxe0. A new check refuses any
dhcp-range outside the imaging subnet, and proxy ranges.
- The catch-all ports ignore offers from 172.16.9.1.
- UFW allows SSH and 9009 by source on any interface, and keeps those
rules when the old any-interface rules are removed.
- pxe_nic_name must not look like en*/eth* in this mode.
pxe-netplan-apply.sh takes 3 or 5 args. Without a pinned GE NIC it:
- renames stray names (the old pxe0 after a re-pick, a leftover corp0)
to enx<mac>, so the catch-all takes them, and restores them on revert;
- checks that every NIC that had a DHCP address before has one after,
tracked by MAC.
With both MACs set (the WJ server), netplan, the dnsmasq pin and UFW
render byte-for-byte as before.
Tested in the pxetest VMs:
- Fresh install with no MACs and the GE link down: the imaging port was
picked and pinned as pxe0 with 172.16.9.1, and dnsmasq bound DHCP to
pxe0 only. GE plugged in afterwards got a lease, SSH worked, and the
guard reported pxe0 isolated.
- --auto refuses with two links.
- The interactive pick works by pulling and replugging the link.
- A 3-arg re-apply is UNCHANGED.
Unit tests (fake sysfs) cover the re-pick and pinned-to-catch-all renames.
- 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.
