KVM with Terraform: SSH permission denied (Cloud-Init) - terraform

Question

I have a KVM host. I'm using Terraform to create some virtual servers using KVM provider. Here's the relevant section of the Terraform file:
provider "libvirt" {
uri = "qemu+ssh://root#192.168.60.7"
}
resource "libvirt_volume" "ubuntu-qcow2" {
count = 1
name = "ubuntu-qcow2-${count.index+1}"
pool = "default"
source = "https://cloud-images.ubuntu.com/bionic/current/bionic-server-cloudimg-amd64.img"
format = "qcow2"
}
resource "libvirt_network" "vm_network" {
name = "vm_network"
mode = "bridge"
bridge = "br0"
addresses = ["192.168.60.224/27"]
dhcp {
enabled = true
}
}
# Use CloudInit to add our ssh-key to the instance
resource "libvirt_cloudinit_disk" "commoninit" {
name = "commoninit.iso"
pool = "default"
user_data = "data.template_file.user_data.rendered"
network_config = "data.template_file.network_config.rendered"
}
data "template_file" "user_data" {
template = file("${path.module}/cloud_config.yaml")
}
data "template_file" "network_config" {
template = file("${path.module}/network_config.yaml")
}
The cloud_config.yaml file contains the following info:
manage_etc_hosts: true
users:
- name: ubuntu
sudo: ALL=(ALL) NOPASSWD:ALL
groups: users, admin
home: /home/ubuntu
shell: /bin/bash
lock_passwd: false
ssh-authorized-keys:
- ${file("/path/to/keyfolder/homelab.pub")}
ssh_pwauth: false
disable_root: false
chpasswd:
list: |
ubuntu:linux
expire: False
package_update: true
packages:
- qemu-guest-agent
growpart:
mode: auto
devices: ['/']
The server gets created successfully, I can ping the device from the host on which I ran the Terraform script. I cannot seem to login through SSH though despite the fact that I pass my SSH key through the cloud-init file.
From the folder where all my keys are stored I run:
homecomputer:keyfolder wim$ ssh -i homelab ubuntu#192.168.80.86
ubuntu#192.168.60.86: Permission denied (publickey).
In this command, homelab is my private key.
Any reasons why I cannot login? Any way to debug? I cannot login to the server now to debug. I tried setting the passwd in the cloud-config file but that also does not work
*** Additional information
1) the rendered template is as follows:
> data.template_file.user_data.rendered
manage_etc_hosts: true
users:
- name: ubuntu
sudo: ALL=(ALL) NOPASSWD:ALL
groups: users, admin
home: /home/ubuntu
shell: /bin/bash
lock_passwd: false
ssh-authorized-keys:
- ssh-rsa AAAAB3NzaC1y***Homelab_Wim
ssh_pwauth: false
disable_root: false
chpasswd:
list: |
ubuntu:linux
expire: False
package_update: true
packages:
- qemu-guest-agent
growpart:
mode: auto
devices: ['/']

Answer 1

I also faced the same problem, because i'm missing the fisrt line
#cloud-config
in the cloudinit.cfg file

Answer 2

You need to add libvirt_cloudinit_disk resource to add ssh-key to VM,
code from my TF-script:
# Use CloudInit ISO to add ssh-key to the instance
resource "libvirt_cloudinit_disk" "commoninit" {
count = length(var.hostname)
name = "${var.hostname[count.index]}-commoninit.iso"
#name = "${var.hostname}-commoninit.iso"
# pool = "default"
user_data = data.template_file.user_data[count.index].rendered
network_config = data.template_file.network_config.rendered

Answer 3

i , i had the same problem . i had resolved in this way:
user_data = data.template_file.user_data.rendered
without double quote!