Once you have your server and you have [configured your DNS records](configuring-dns.md#configuring-dns), you can proceed with configuring this playbook, so that it knows what to install and where.
You can follow these steps:
- create a directory to hold your configuration (`mkdir inventory/host_vars/matrix.<your-domain>`)
- copy the sample configuration file (`cp examples/host-vars.yml inventory/host_vars/matrix.<your-domain>/vars.yml`)
- edit the configuration file (`inventory/host_vars/matrix.<your-domain>/vars.yml`) to your liking. You may also take a look at the various `roles/ROLE_NAME_HERE/defaults/main.yml` files and see if there's something you'd like to copy over and override in your `vars.yml` configuration file.