QEMU

The following describes how to launch a QEMU system on Ubuntu in order to test the QEMU detection. These instructions are identical to the KVM CLI instructions except for the absence of the '-enable-kvm' option.

First, create some user-data to pass the VM that will setup the 'ubuntu' user with the password of 'password'. Also set your GitHub ID and it will automatically import your SSH key into the VM:

export GITHUB_ID=<GITHUB_ID>
sudo apt update
sudo apt install --yes cloud-image-utils
cat > user-data.yaml <<EOF
#cloud-config
password: password
chpasswd:
    expire: False
ssh_pwauth: True
ssh_import_id:
    - gh:$GITHUB_ID
EOF
cloud-localds seed.img user-data.yaml

Get the latest Ubuntu 20.04 LTS (Focal) image and launch the VM:

wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img
qemu-system-x86_64 -m 2048 -nographic -snapshot \
    -netdev id=net00,type=user,hostfwd=tcp::2222-:22 \
    -device virtio-net-pci,netdev=net00 \
    -drive if=virtio,format=qcow2,file=focal-server-cloudimg-amd64.img \
    -drive if=virtio,format=raw,file=seed.img

Once the system has booted, and this will take a considerable amount of time due to the emulation, transfer a local test binary run:

rsync -e "ssh -p 2222" whatsthis ubuntu@0.0.0.0:/home/ubuntu/whatsthis

Then either login with ubuntu and password or SSH to the system using:

ssh -o "StrictHostKeyChecking no" ubuntu@0.0.0.0 -p 2222

When done to close out of the qemu process using the escape sequence:

Ctrl-a c
(qemu) quit