QEMU-Automator

Spawn virtual machines with pre-configured data files.

Repository for the project component of the course CSE4011 (Virtualization), maintained by Shantanu Verma, Rohan Mukherjee, and Bhavya Taneja.
The tools created herein are motivated by a literature survey we performed on this subject.

Requirements

• qemu
• kvm
• cdrtools (or genisoimage)
• cloud image - sample

Usage

Step 1

Store the cloud-image in the root directory. For the purpose of simplicity, we will refer to it as cloud.img.

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

Step 2

Edit the user-data according to your requirements. It is in yaml format.

# cloud-config

users:
  - name: roerohan
    gecos: Rohan Mukherjee
    ssh-authorized-keys:
      - ssh-rsa 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 roerohan@anarchy
    sudo: ['ALL=(ALL) NOPASSWD:ALL']
    groups: sudo
    shell: /bin/bash

Step 3

Edit the meta-data file, if necessary. This is also in yaml format.

instance-id: id-12345
local-hostname: virt-ubuntu

Step 4

Run script.sh. This will automatically add your SSH key and other data from user-data to the image.

./script.sh

You will now be able to SSH into the ubuntu server, with the username and private key corresponding to the entered public key.

License

MIT License

References

You can checkout your user-data configuration here:

• https://cloudinit.readthedocs.io/en/latest/topics/examples.html