MD. Nazmul Alam
Cloud-init enabled Ubuntu 20.04 template for Proxmox to facilitate automatic instance deploy by Terraform

Cloud-init enabled Ubuntu 20.04 template for Proxmox to facilitate automatic instance deploy by Terraform

MD. Nazmul Alam's photo
MD. Nazmul Alam
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Create Proxmox Template (Ubuntu 20.04 LTS)

Prepare Proxmox node for Template creation process

Working on Proxmox (RnD) IP: 172.16.7.41

Update/Upgrade all packages. And install libguestfs-tools package

sudo apt update
sudo apt upgrade -y

sudo apt install libguestfs-tools -y

Add current user to kvm group to be able to use the virt-edit command

sudo usermod -aG kvm <username>

Logout and login again and add an environment variable EDITOR which is used by virt-edit

export EDITOR=nano
printenv | grep EDITOR

Download and Prepare Ubuntu 20.04 LTS cloud image

Download Ubuntu 20.04 LTS cloud image

wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img -O ubuntu20.qcow2

Customize sshd_conf file for ssh configuration

virt-edit -a ubuntu20.qcow2 /etc/ssh/sshd_config

After nano opens up the sshd_config file, do the following changes, save the file and exit

  • UnComment PubkeyAuthentication yes
  • Change PasswordAuthentication yes

Prepare Cloud image before starting to create a new VM from it

Setup Time-Zone, Run update for all packages, Install additional packages

virt-customize -a ubuntu20.qcow2 --timezone "Asia/Dhaka"
virt-customize -a ubuntu20.qcow2 --update
virt-customize -a ubuntu20.qcow2 --install qemu-guest-agent
virt-customize -a ubuntu20.qcow2 --run-command 'sudo systemctl enable qemu-guest-agent'

Set password for root

read -sp "Password for root: " pwd && virt-customize -a ubuntu20.qcow2 --root-password password:$pwd

Create Proxmox Template from prepared cloud image

Create a VM with minimum configuration

sudo qm create 9202 --name "Ubuntu20-CI-Template" --memory 1024 --cores 1 --net0 virtio,bridge=vmbr0
sudo qm importdisk 9202 ubuntu20.qcow2 pve-block

Additional settings for the new VM

sudo qm set 9202 --scsihw virtio-scsi-pci --scsi0 pve-rbd:vm-9202-disk-0
sudo qm set 9202 --boot c --bootdisk scsi0
sudo qm set 9202 --ide2 pve-rbd:cloudinit
sudo qm set 9202 --sshkey .ssh/myKey.pub
sudo qm set 9202 --agent 1

Set cloud-init settings for the VM

sudo qm set 9202 --ciuser ubuntu --citype nocloud --nameserver 172.16.4.1 --ipconfig0 ip=dhcp --searchdomain cs.net
read -sp 'Password for ubuntu: ' pwd && sudo qm set 9202 --cipassword $pwd

Convert the new VM to template

sudo qm template 9202
Ubuntu 20.04Terraformcloud-initproxmoxSRE