Bootstrapping our Ceph cluster
The first step is to download the latest copy of ceph-ansible
on to your machine. It is important to note that all changes we will make to bootstrap a Ceph cluster will be made from within a dedicated directory so use  cd
 to move to the appropriate location before downloading. The following command will download ceph-ansible
within a new directory called ceph-ansible
in your current directory:
$ git clone https://github.com/ceph/ceph-ansible.git ceph-ansible
If you want your directory name to be something other than ceph-ansible
change the text of the last field in the above command. As all future changes and commands will be performed from within this directory we need to cd
into it:
$ cd ceph-ansible
Now we are in the ceph-ansible
directory. This directory holds the code for all Ansible playbooks that will be used to configure and install Ceph. The Ceph community is actively doing development on this repository so the very latest state may be unstable or incorporate...