Qemu build image on kvm hypervisor

Packer
1

Hi Team,

I have vhd disk that contains OEL9 operating system, using this disk I need to make some configuration changes using packer in order to create kvm image.
I’m following the QEMU packer build documentation, Now I want to create this image using vhd file and need to perform configuration using ansible provisioner.

Could you please let me know what are all the parameters I need to add it. Here is my snippet:

{
“builders”: [
{
“vm_name”: “Demo-VM”,

  "disk_image": true,
  "iso_url": "my_existing_image.vhd",
  "iso_checksum_type": "none",

  "output_directory": "Output-Image",

  "ssh_username": "",
  "ssh_password": "",
  "ssh_pty": true,
  "ssh_wait_timeout": "2m",

  "shutdown_command": "echo 'centos' | sudo -S /sbin/halt -h -p",

  "type": "qemu",
  "headless": true,
  "memory": "8192",
  "cpus": 4
}

],
“post-processors”: null,
“provisioners”: [
{
“type”: “ansible”,
“playbook_file”: “./My_playbook.yml”
}
]
}

2

  1. You first need to drop the json and use hcl instead. It’s easier to read,
    or at least I find it easier to read.

  2. Use the three tildes to make your code readable on the forum.

```plain
Like this
```

Like this
  1. Extra parameters you need:
  • A packer block that contains the required qemu plugin.
  • boot_command
  • accelerator
  • disk_interface
  • http_directory
3

I’m getting the below error while running the packer code for kvm

==> qemu: Connecting to VM via VNC (0.0.0.0:5931)
==> qemu: Typing the boot commands over VNC…
==> qemu: Waiting for the guest address to become available in the virbr0 network bridge…
==> qemu: Using SSH communicator to connect: 192.x.x.x
==> qemu: Waiting for SSH to become available…
==> qemu: Timeout waiting for SSH.
==> qemu: Deleting output directory…
Build ‘qemu’ errored after 8 minutes 47 seconds: Timeout waiting for SSH.

==> Wait completed after 8 minutes 47 seconds

==> Some builds didn’t complete successfully and had errors:
→ qemu: Timeout waiting for SSH.

==> Builds finished but no artifacts were created.

4

You need your script to add your ssh username and password,
corresponding to the one you wrote down in your packer build file
and turn on the ssh service.

5

I have added that already in my json file.

I’m running this packer code on KVM hyper visor machine.

Also i’m using qcow2 file by mentioning in iso_url path

Please let me know if anything i need to enable.

6

I have added that already in my json file.

That’s what I call the packer build file.
It’s actually called the packer template in the documentation,
but I hadn’t looked that up in my previous.

How do you build up your box?
In the My_playbook.yml?
Can you show that code?
I’m not familiar with ansible.

Your provisioner files (My_playbook.yml) should have ssh username and password added and correspond to the ones in your packer template.