Copy ceph-ansible package on ceph-node1 from the Ceph-Cookbook-Second-Edition directory. 

1. Use vagrant as the password for the root user:

      # cd Ceph-Designing-and-Implementing-Scalable-Storage-Systems
      # scp ceph-ansible-2.2.10-38.g7ef908a.el7.noarch.rpm root@ceph-node1:/root

2. Log in to ceph-node1 and install ceph-ansible on ceph-node1:

      [root@ceph-node1 ~]# 
      yum install ceph-ansible-2.2.10-38.g7ef908a.el7.noarch.rpm -y

3. Update the Ceph hosts to /etc/ansible/hosts:

4. Verify that Ansible can reach the Ceph hosts mentioned in /etc/ansible/hosts:

5. Create a directory under the root home directory so Ceph Ansible can use it for storing the keys:

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6. Create a symbolic link to the Ansible group_vars directory in the /etc/ansible/ directory:

7. Go to /etc/ansible/group_vars and copy an all.yml file from the all.yml.sample file and open it to define configuration options' values:

8. Define the following configuration options in all.yml for the latest jewel version on CentOS 7:

9. Go to /etc/ansible/group_vars and copy an osds.yml file from the osds.yml.sample file and open it to define configuration options' values:

10. Define the following configuration options in osds.yml for OSD disks; we are co-locating an OSD journal in the OSD data disk:

11. Go to /usr/share/ceph-ansible and add retry_files_save_path option in ansible.cfg in the [defaults] tag:

12. Run Ansible playbook in order to deploy the Ceph cluster on ceph-node1:

To run the playbook, you need site.yml, which is present in the same path: /usr/share/ceph-ansible/. You should be in the /usr/share/ceph-ansible/ path and should run following commands:

      # cp site.yml.sample site.yml
      # ansible-playbook site.yml

Once playbook completes the Ceph cluster installation job and plays the recap with failed=0, it means ceph-ansible has deployed the Ceph cluster, as shown in the following screenshot:

You have all three OSD daemons and one monitor daemon up and running in ceph-node1.

Here's how you can check the Ceph jewel release installed version. You can run the ceph -v command to check the installed ceph version: