Installation notes:

• The ansible playbooks are idem-potent. This means you can re-run the playbook as many times you prefer.
• Some component configs will not be re-generated during a rerun of the ansible playbook:

  • openldap config and database content
  • luna configs
  • certificates
  • slurm configs
  • shared disk. once created, it will not be recreated again.

The main analogy was to prevent an accidental disaster when an admin reruns the playbooks while having customized the cluster after the initial playbook run.