This is a sample of Vagrantfile for prepare a suitable laboratory with vagrant to make multiple machines on Ubuntu 20.04.

These vagrant boxes exist in this Vagrantfile.

• CentOS 7
• Ubuntu 20.04 server
• Debian 10 buster
• Ubuntu 20.04 with desktop (GUI)

Official Ubuntu KVM installation

Before continuing with the installation, make sure your Ubuntu host machine supports KVM virtualization. The system should have either an Intel processor with the VT-x (vmx), or an AMD processor with the AMD-V (svm) technology support.

Run the following grep command to verify that your processor supports hardware virtualization:

grep -Eoc '(vmx|svm)' /proc/cpuinfo

If the CPU supports hardware virtualization, the command will output a number greater than zero, which is the number of the CPU cores. Otherwise, if the output is 0 it means that the CPU doesn’t support hardware virtualization.

On some machines, the virtual technology extensions may be disabled in the BIOS by the manufacturers.

• To check if VT is enabled in the BIOS, use the kvm-ok tool.

kvm-ok

output

INFO: /dev/kvm exists
KVM acceleration can be used

• Install packages

sudo apt install qemu libvirt-daemon-system \
libvirt-clients libxslt1-dev libxml2-dev libvirt-dev \
zlib1g-dev ruby-dev ruby-libvirt ebtables dnsmasq-base \
qemu-kvm bridge-utils virtinst virt-manager libvirt-doc \
qemu-kvm virtinst virt-viewer virt-manager bridge-utils \
cpu-checker virt-top imvirt

• Start and enable libvirtd daemon service.

sudo systemctl is-active libvirtd

• To be able to create and manage virtual machines, you’ll need to add your user to the “libvirt” and “kvm” groups. To do that, enter:

sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER

Download deb/rpm package from vagrant official website.

• Install vagrant package.

sudo dpkg -i vagrant_2.2.13_i686.deb
# or
sudo apt install ./vagrant_2.2.13_i686.deb

• Now, install vagrant-libvirt plugin using command:

vagrant plugin install vagrant-libvirt

• You also need to install vagrant-mutate plugin which converts vagrant boxes to work with different providers.

vagrant plugin install vagrant-mutate

These are boxes defined name in this Vagrantfile:

• centos7lab1
• centos7lab2
• centos7lab3
• debian10
• focal-desktop
• ubuntu2004

Finally:

vagrant up <boxes defined name>
# e.g vagrant up debian10

Author: Hamid Gholami ([email protected])

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