virtmanager

VirtManager

API for managing virtual machines on Ubuntu using FastAPI and libvirt.

Installation

1. Create and activate a virtual environment:

   python3 -m venv venv
   source venv/bin/activate
   

2. Install dependencies:

   pip install -r requirements.txt
   

3. Ensure libvirt is installed on the system:

   sudo apt install libvirt-daemon-system libvirt-dev pkg-config
   

Running the API

Set the environment variable for the images path if needed (default is /var/lib/libvirt/images):

export LIBVIRT_IMAGES_PATH=/path/to/images
source venv/bin/activate
uvicorn app.main:app --reload --host 0.0.0.0

The API will be available at http://0.0.0.0:8000

Access the interactive documentation at http://0.0.0.0:8000/docs

Endpoints

• GET / : Root message
• GET /vms : List all VMs
• POST /vms?name={name}&template={template}&disk={disk} : Create a new VM from a template with custom disk name
• GET /vms/{vm_id}/start : Start a VM by ID
• GET /vms/{vm_id}/stop : Stop a VM by ID
• DELETE /vms/{vm_name} : Delete a VM by name
• POST /disks?name={name}&size={size} : Create a new disk image with specified size in GB

Templates

VM templates are XML files stored in the templates/ directory. Each template defines the base configuration for a VM. When creating a VM, the name in the XML is replaced with the provided name, and the disk file path is set using the LIBVIRT_IMAGES_PATH environment variable (default: /var/lib/libvirt/images) plus the provided disk name.

Example template: templates/ubuntu.xml