Virtualisation

Docker

Orchestration

docker-compose

Installation on CentOS 7

sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
docker-compose --version

The Digital Ocean website has a complete and up-to-date tutorial available.

Oracle VirtualBox

Settings

Paravirtualization interface: - Default — VirtualBox automatically chooses the best paravirtualization interface based on the guest OS. - None — Disables paravirtualization entirely; useful for old OSes or troubleshooting. - Legacy — Older VirtualBox‑specific interface kept for compatibility with very old VMs. - KVM — Emulates the Linux KVM interface; best for Linux guests. - Hyper‑V — Emulates Microsoft’s Hyper‑V interface; best for Windows guests.

For Linux distro’s the following works well. Availability might depend on host OS and architecture. - Motherboard / Chipset: ICH9 - Motherboard / TPM Version: 2.0 - Motherboard / Features / UEFI: Yes - Display / Graphics Controller: VMSVGA - Controller / Type: virtio-scsi - Audio / Audio Controller: Intel HD AUdio - Network / Adapter Type: virtio-net