ce configurations based on a template and a variables file. The article presupposes that you have Ansible installed on your system and you have some basic familiarity with Ansible. The Ansible documentation is very good. You can find it at http://docs.ansible.com/. You might want to read through the Getting Started section and through some of the Intro to Playbooks section. Both of these sections are fairly short.
edit /etc/resolvconf/resolv.conf.d/head instead to prevent this. If that is not an option you will have to either adjust the dhcp server on your network to hand out the additional li