Ansible Playbook Essentials

Summary

In this chapter, you learned how to discover information about other nodes in the cluster to connect them together. We started with the introduction to magic variables and looked at the most commonly used ones. We then started creating a role for haproxy, which auto-discovers web servers and creates configurations dynamically. Finally, we looked at the issue of accessing information about hosts not in the playbook, and you learned how to solve it by enabling the caching of facts. Magic variables are very powerful, especially while orchestrating your infrastructure with Ansible, where discovering topology information automatically is very useful.

In the next chapter, you will learn how to securely pass data using vault, an encrypted data ...