In the previous chapter we built a full-fledged, operational Ceph cluster using virtualization and ceph-ansible. Here we will summarize the bootstrapping of Ceph on bare metal utilizing the same ceph-ansible tools but without Vagrant orchestrating. If you're using for loops, like Jack Butler you're doing it wrong.
First, clone the ceph-ansible GitHub repo onto a system or VM that will serve as your admin node.
$ git clone https://github.com/ceph/ceph-ansible/
Next install Ansible via your Linux distribution's package manager, pip, or download from http://docs.ansible.com/ansible/latest/intro_installation.html . The latest stable release is suggested.
Next populate Ansible's inventory file with hosts and host groups using /etc/ansible/hosts ...