OpenBSD: build arm64 libvirt boxes with QEMU - #9
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Consumers that pin the Python interpreter to `/usr/local/bin/python3` (e.g. Ansible) cannot find it: `pkg_add python%3` installs only the versioned `python3.X` binary and leaves the unversioned name for the operator to create. Symlink it during provisioning so the box works with them as built.
The box shipped only Vagrant's classic RSA insecure public key. Newer Vagrant, and the inventory vagrant-libvirt generates, prefer the ed25519 insecure key, so connecting to the box with it failed with a public-key error. Install both keys.
The amd64 box uses the VirtualBox builder and the arm64 box the VMware Fusion builder; both need a desktop hypervisor. Packer cannot drive OpenBSD's serial-console installer, so neither builds headlessly on a plain Linux/KVM host (CI, a Linux dev box, or a nested-virt VM). Add a shell-script build (`build.sh` + `install.py`) that boots the miniroot installer under QEMU/KVM, drives an unattended install over the serial console, provisions over SSH, and packages the qcow2 as a libvirt box. It captures the non-obvious QEMU tuning OpenBSD/arm64 needs under (nested) KVM: `gic-version=3`, a single CPU, virtio INTx, and a drained serial console.
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The amd64 box uses the VirtualBox builder and the arm64 box the VMware
Fusion builder; both need a desktop hypervisor. Packer cannot drive
OpenBSD's serial-console installer, so neither builds headlessly on a
plain Linux/KVM host (CI, a Linux dev box, or a nested-virt VM).
Add a shell-script build (
build.sh+install.py) that boots theminiroot installer under QEMU/KVM, drives an unattended install over
the serial console, provisions over SSH, and packages the qcow2 as a
libvirt box. It captures the non-obvious QEMU tuning OpenBSD/arm64
needs under (nested) KVM:
gic-version=3, a single CPU, virtio INTx,and a drained serial console.