pve-template-vm/build-proxmox-template

#!/bin/bash

#
# Build a disk image suitable for use as a Proxmox template in the CCCHH clusters.
# Needs apt install libguestfs-tools
#

VMID=9023
STORAGE=local-zfs
OS=debian-12
NAME=chaos-${OS}-tmpl-$(date -u +%Y-%m-%d)
BRIDGE=vmbr0,tag=208

set -eE

tempfolder=$(mktemp -d /tmp/cloudinit-XXXXX)
pushd $tempfolder


trap cleanup SIGHUP SIGINT SIGQUIT SIGABRT ERR EXIT

cleanup() {
  echo "Removing temporary files"
  popd 2> /dev/null || true
  rm -rf $tempfolder
  exit
}


wget https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-generic-amd64.tar.xz -O debian-12-generic-amd64.tar.xz
wget https://cloud.debian.org/images/cloud/bookworm/latest/SHA512SUMS -O SHA512SUMS
sha512sum --ignore-missing -c SHA512SUMS
rm SHA512SUMS
tar -xf debian-12-generic-amd64.tar.xz
rm debian-12-generic-amd64.tar.xz

virt-customize -a disk.raw \
	--update \
	--install qemu-guest-agent \
	--run-command 'systemctl enable qemu-guest-agent' \
	--run-command 'systemctl enable fstrim.timer' \
	--edit '/etc/ssh/sshd_config:s,#?Port.*,Port 42666,'

qm destroy ${VMID} || true
qm create ${VMID} --name "creating-vm" --memory 2048 --net0 virtio,bridge=${BRIDGE}
qm importdisk ${VMID} disk.raw ${STORAGE}
rm disk.raw
popd

qm set ${VMID} --scsihw virtio-scsi-pci --scsi0 ${STORAGE}:vm-${VMID}-disk-0,ssd=1,discard=on
qm set ${VMID} --ide2 ${STORAGE}:cloudinit
qm set ${VMID} --boot c --bootdisk scsi0
qm resize ${VMID} scsi0 16G
qm set ${VMID} --machine q35
qm set ${VMID} --ostype l26
qm set ${VMID} --cpu cputype=host
qm set ${VMID} --cores 2
qm set ${VMID} --serial0 socket --vga serial0
qm set ${VMID} --agent 1,fstrim_cloned_disks=1
qm set ${VMID} --ciuser chaos
qm set ${VMID} --sshkeys ./authorized_keys
qm set ${VMID} --ipconfig0 ip=dhcp
qm set ${VMID} --name ${NAME}
qm cloudinit update ${VMID}
qm template ${VMID}