Instalação - CentOS 7

sudo yum group install "Virtualization Client" "Virtualization Hypervisor" "Virtualization Platform" "Virtualization Tools" "Development Tools"
sudo yum install libvirt libvirt-devel ruby-devel gcc qemu-kvm libguestfs-tools
wget https://releases.hashicorp.com/vagrant/2.2.19/vagrant_2.2.19_x86_64.rpm
sudo yum install vagrant_2.2.19_x86_64.rpm
sudo usermod -a -G libvirt $( id -un )
vagrant plugin install vagrant-libvirt

Referências