To install Vagrant on CentOS, go to
https://www.vagrantup.com/downloads
Get link to latest version, then run “rpm -ivh URL_TO_RPM_FILE”.
At time of writing this post, latest Vagrant version is 2.2.9, to install Vagrant 2.2.9, run
rpm -ivh https://releases.hashicorp.com/vagrant/2.2.9/vagrant_2.2.9_x86_64.rpm
To check Vagrant version
vagrant --version