Summary
In this chapter, we have covered immutable infrastructure with Packer. We used Packer with the Ansible provisioner to build custom images for Apache and MySQL. We used the custom images to create a scalable LAMP stack using Terraform. The chapter introduced you to the era of modern DevOps, where everything is automated. We follow the same principles for building and deploying all kinds of infrastructure, be it containers or VMs. In the next chapter, we will discuss one of the most important topics of DevOps – continuous integration.
