Summary

In this chapter, we have covered immutable infrastructure and how to use Packer to create immutable infrastructure. We then 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 Virtual Machines. In the next chapter, we will move to the world of Container as a Service (CaaS) and serverless computing for containers.