proxmox example cloud-init script

create-cloud-init-template.sh

#! /bin/bash

VMID=9001
STORAGE=ZFS-SSD

set -x

# rm -f noble-server-cloudimg-amd64.img
# wget -q https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img


# ubuntu release name: noble,mantic,jammy,luna

RELEASE=noble

# IMG_TEMPLATE=/var/lib/vz/template/iso/$RELEASE-server-cloudimg-amd64.img
# IMG_TEMPLATE=/var/lib/vz/template/iso/$RELEASE-server-cloudimg-amd64.img
IMG_TEMPLATE=/var/lib/vz/template/iso/ubuntu-24.04-minimal-cloudimg-amd64.img
# IMG_TEMPLATE=/var/lib/vz/template/iso/ubuntu-22.04-minimal-cloudimg-amd64.img


qemu-img resize $IMG_TEMPLATE 32G

qm create $VMID --name "ubuntu-$RELEASE-template" \
    --memory 8192 --balloon 0 \
    --agent 1 \
    --sockets 2 \
    --cores 2 \
    --vga serial0 --serial0 socket  \
    --net0 virtio,bridge=vmbr0,mtu=1,tag=31 \
    --scsihw virtio-scsi-pci

qm set $VMID --scsi0 $STORAGE:0,import-from=$IMG_TEMPLATE,ssd=1
qm set $VMID --boot order=scsi0
qm set $VMID --ide2 $STORAGE:cloudinit


if [ "$RELEASE" == "noble" ]; then
cat << EOF | tee /var/lib/vz/snippets/ubuntu.yaml
  #cloud-config
  runcmd:
      - sed -i 's/archive.ubuntu.com/mirror.kku.ac.th/g' /etc/apt/sources.list.d/ubuntu.sources
      - sed -i 's/security.ubuntu.com/mirror.kku.ac.th/g' /etc/apt/sources.list.d/ubuntu.sources
      - echo 'Acquire::ForceIPv4 "true";' > /etc/apt/apt.conf.d/99force-ipv4
      - apt-get update -y
      - apt-get upgrade -y
      - apt-get install -y qemu-guest-agent
      - apt-get install -y bash-completion
      - systemctl enable ssh
      - reboot
  # Taken from https://forum.proxmox.com/threads/combining-custom-cloud-init-with-auto-generated.59008/page-3#post-428772
EOF

else

cat << EOF | tee /var/lib/vz/snippets/ubuntu.yaml
  #cloud-config
  runcmd:
      - sed -i 's/archive.ubuntu.com/mirror.kku.ac.th/g' /etc/apt/sources.list
      - sed -i 's/security.ubuntu.com/mirror.kku.ac.th/g' /etc/apt/sources.list
      - cat 'Acquire::ForceIPv4 "true";' > /etc/apt/apt.conf.d/99force-ipv4
      - apt-get update -y
      - apt-get upgrade -y
      - apt-get install -y qemu-guest-agent
      - apt-get install -y bash-completion
      - systemctl enable ssh
      - reboot
  # Taken from https://forum.proxmox.com/threads/combining-custom-cloud-init-with-auto-generated.59008/page-3#post-428772
EOF

fi

qm set $VMID --cicustom "vendor=local:snippets/ubuntu.yaml"
qm set $VMID --tags ubuntu-template,$RELEASE,cloudinit

read -p 'Username: ' username

qm set $VMID --ciupgrade 0
qm set $VMID --ciuser $username
qm set $VMID --cipassword $(openssl passwd -6 $CLEARTEXT_PASSWORD)

qm set $VMID --sshkeys ./id_ed25519.pub
qm set $VMID --ipconfig0 ip=dhcp

qm template $VMID