debvirt-image-kit

debvirt-image-kit is a tool to create Debian images for KVM virtualization using HashiCorp Packer as a backend.

Features

Generates a random SSH password if not provided
Copies the specified preseed file to the http directory
Generates a Packer template based on the provided parameters
Supports loading of external Packer template files
Installs Packer plugins
Executes Packer to build the Debian image
Supports generation of individual components (preseed, Packer template) or both without building the image

Notes

Ensure that you have sufficient permissions to run QEMU/KVM on your system.
The generated image will be in qcow2 format, suitable for use with KVM.
Customize the preseed file according to your needs for automated Debian installation.
The default Packer template file is debian.pkr.hcl.tpl. You can customize this template or use your own.
The default preseed template file is preseed.cfg.tpl. You can customize this template or use your own.

Installation

Build the tool:

$ go build

Usage

Prepare a preseed.cfg.tpl file with your desired Debian installation configurations.
Optionally, prepare a debian.pkr.hcl.tpl file with your desired Packer template configurations.
Run the tool:
```
$ ./debvirt-image-kit --version 12.7.0
```
This will generate both the preseed file and Packer template, then build the image.
To generate only specific components:
- Generate only the preseed file:
```
$ ./debvirt-image-kit --gen preseed
```
- Generate only the Packer template:
```
$ ./debvirt-image-kit --gen packer
```
- Generate both preseed and Packer template without building the image:
```
$ ./debvirt-image-kit --gen all
```

Additional options:

Specify a custom SSH username:

$ ./debvirt-image-kit --ssh-username myuser

Specify a custom SSH password (if not provided, a random password will be generated):
```
$ ./debvirt-image-kit --ssh-password mypassword
```

Specify custom disk size and memory:

$ ./debvirt-image-kit --disk-size 30000M --memory 4096

Use a custom Packer template file:

$ ./debvirt-image-kit --packer-template my-custom-template.pkr.hcl.tpl

Use a custom preseed template file:

$ ./debvirt-image-kit --preseed-file my-custom-preseed.cfg.tpl

Example Output

$ ./debvirt-image-kit --version 12.7.0
Starting debvirt-image-kit...
Generated random SSH password: pBdJ4WPqcYK7zIOH
Installing Packer plugins...
Running Packer to build the image...
qemu.debian: output will be in this color.

==> qemu.debian: Retrieving ISO
==> qemu.debian: Trying https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-12.7.0-amd64-netinst.iso
...
Build 'qemu.debian' finished after 5 minutes 31 seconds.

==> Wait completed after 5 minutes 31 seconds

==> Builds finished. The artifacts of successful builds are:
--> qemu.debian: VM files in directory: output
debvirt-image-kit: Debian image generated successfully!

License

This project is licensed under the MIT License - see the LICENSE for details.