PreQC Process for 18.04 with Stein and newer

All of this will be run on controller1

Make sure you copy the SSH key from controller1 to all the other nodes

Create the preqc Directory

# mkdir -p /home/rack/preqc  
# cd /home/rack/preqc

Clone the repo

git clone <URL_OF_THIS_REPO> /home/rack/preqc

Make sure the proper python packages are installed

# bash ./prereqs.sh

Create the preqc virtual environment

# virtualenv preqc_venv

Activate the preqc virtual environment

# source preqc_venv/bin/activate

Install Ansible

(preqc_venv)# pip install ansible==2.9.4

Edit the inventory

(preqc_venv)# vim inventory

As the hostnames for all the nodes won't be in /etc/hosts yet, use the following format for the inventory:

[controllers]
controller1 ansible_host=10.240.0.51
controller2 ansible_host=10.240.0.52
controller3 ansible_host=10.240.0.53

[infras]
infra1 ansible_host=10.240.0.41
infra2 ansible_host=10.240.0.42

[computes]
compute1 ansible_host=10.240.0.55
compute2 ansible_host=10.240.0.56
compute3 ansible_host=10.240.0.57

[ceph]
ceph1 ansible_host=10.240.0.58
ceph2 ansible_host=10.240.0.59
ceph3 ansible_host=10.240.0.60

Test Ansible can communicate to all the nodes

(preqc_venv)# ansible all -i ./inventory -m ping

Run the PreQC playbooks

(preqc_venv)# ansible-playbook -i ./inventory playbooks/main.yml