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#! /bin/sh
# Auto-install OpenBSD/amd64 6.6 to a QEMU guest machine.
#
# Run the following command to serve the OpenBSD mirror at
# http://127.0.0.1:8080:
#
# python3 -m http.server \
# --directory ./openbsd-vm/mirror \
# --bind 127.0.0.1 8080
#
# Pass the following options to ssh or scp to connect to the guest machine:
#
# ssh \
# -o "StrictHostKeyChecking no" \
# -o "UserKnownHostsFile /dev/null" \
# -o "Port 2222" \
# puffy@127.0.0.1
#
# For example, the following command forwards port 8080 on the host to port 80
# on the guest:
#
# ssh \
# -o "StrictHostKeyChecking no" \
# -o "UserKnownHostsFile /dev/null" \
# -o "Port 2222" \
# -N \
# -L 127.0.0.1:8080:127.0.0.1:80 \
# puffy@127.0.0.1
#
# Press C-a x to stop the guest machine. Press C-a h to show other options.
#
# The virtual network:
#
# network = 10.0.2.0/24
# host = 10.0.2.2
# nameserver = 10.0.2.3
# guest = 10.0.2.15-31
#
# Port forwardings:
#
# 10.0.2.1:80 -> host:8080
# host:2222 -> guest:22
#
# Copyright (c) 2020 Stefan Kreutz <mail@skreutz.com>
set -o errexit
set -o nounset
set -o xtrace
# Set parameters.
VM_FILE="${VM_FILE-openbsd-vm.qcow2}"
DISK_SIZE="${DISK_SIZE-160G}"
CPU_COUNT="${CPU_COUNT-6}"
MEMORY_SIZE="${MEMORY_SIZE-4G}"
# Remove existing virtual machine if configuration changed.
if [ -e "${VM_FILE}" ] ;
then
vm_created="$( stat -c %W "${VM_FILE}" )"
for f in boot.conf disklabel install.conf install.site
do
if [ "${vm_created}" -lt "$( stat -c %Y "$f" )" ] ;
then
( >&2 printf "%s changed. Recreating virtual machine." "$f" )
rm "${VM_FILE}"
fi
done
fi
if [ ! -e "${VM_FILE}" ] ;
then
# Download and verify OpenBSD/amd64 6.6 installation images and file sets.
mkdir -p .openbsd-vm/mirror/pub/OpenBSD/6.6
if [ ! -e .openbsd-vm/mirror/pub/OpenBSD/6.6/openbsd-66-base.pub ] ;
then
curl \
--output .openbsd-vm/mirror/pub/OpenBSD/6.6/openbsd-66-base.pub \
--silent \
https://ftp.openbsd.org/pub/OpenBSD/6.6/openbsd-66-base.pub
fi
if [ ! -d .openbsd-vm/mirror/pub/OpenBSD/6.6/amd64 ] ;
then
mkdir -p .openbsd-vm/tmp
rsync --recursive --delete --quiet \
rsync://ftp.halifax.rwth-aachen.de/openbsd/6.6/amd64/ \
.openbsd-vm/tmp/
( cd .openbsd-vm/tmp && \
signify -C -q -p ../mirror/pub/OpenBSD/6.6/openbsd-66-base.pub -x SHA256.sig )
mv .openbsd-vm/tmp .openbsd-vm/mirror/pub/OpenBSD/6.6/amd64
fi
# Create site-specific file set.
if [ ! -x install.site ] ;
then
chmod +x install.site
fi
rm -f .openbsd-vm/mirror/pub/OpenBSD/6.6/amd64/site66.tgz
tar -czf .openbsd-vm/mirror/pub/OpenBSD/6.6/amd64/site66.tgz install.site
( cd .openbsd-vm/mirror/pub/OpenBSD/6.6/amd64 && ls -l > index.txt )
# Add public ssh key to install.conf.
cp install.conf .openbsd-vm/mirror/
if ! grep -q -e "^Public ssh key for user" install.conf ;
then
ssh_pub_key="$( cat ~/.ssh/id_rsa.pub )"
echo "Public ssh key for user = ${ssh_pub_key}" \
>> .openbsd-vm/mirror/install.conf
fi
# Copy disklabel template.
cp disklabel .openbsd-vm/mirror/
# Wait until the HTTP server is online.
#
while [ ! "$( curl --silent --location --write-out '%{http_code}\n' --output /dev/null http://127.0.0.1:8080/install.conf )" = 200 ] ;
do
( >&2 printf "Please serve the directory ./openbsd-vm/mirror at http://127.0.0.1:8080.\n" )
sleep 5
done
# Collect files to be served over TFTP.
rm -rf .openbsd-vm/tftp
mkdir .openbsd-vm/tftp
ln -s ../mirror/pub/OpenBSD/6.6/amd64/pxeboot .openbsd-vm/tftp/auto_install
ln -s ../mirror/pub/OpenBSD/6.6/amd64/bsd.rd .openbsd-vm/tftp/bsd.rd
mkdir .openbsd-vm/tftp/etc
cp boot.conf .openbsd-vm/tftp/etc/
# Create copy-on-write disk image.
qemu-img create -f qcow2 "${VM_FILE}" "${DISK_SIZE}"
fi
# Auto-install guest machine.
qemu-system-x86_64 \
-enable-kvm \
-m "${MEMORY_SIZE}" \
-smp "cpus=${CPU_COUNT}" \
-device e1000,netdev=n1 \
-netdev "user,id=n1,hostname=openbsd-vm,tftp-server-name=10.0.2.1,tftp=.openbsd-vm/tftp,bootfile=auto_install,hostfwd=tcp::2222-:22,guestfwd=tcp:10.0.2.1:80-cmd:socat - tcp:127.0.0.1:8080" \
-drive "file=${VM_FILE},media=disk,if=virtio" \
-nographic
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