Summary

In this chapter, we learned how to utilize public modules. Public modules can help us create complex systems more rapidly than building them from scratch. Public modules are also an excellent resource for learning Terraform language tricks. All public modules reside in GitHub repositories and are free to explore.

Furthermore, we used workspaces to create two independent environments by writing two separate variable definition files and creating two workspaces. Creating a third environment is as easy as creating a new variable definitions file and workspace and running Terraform in that workspace. That is the power of Terraform.

Now that we have demonstrated different approaches to provision three very different architectures, we will introduce some tools to help us develop Terraform code more efficiently. Before we go on, be sure to delete the GKE clusters, as they incur considerable costs due to the number of VMs provisioned.