Modules use cases and benefits
1. Modules use cases and benefits
Let’s next look into where and how modules can be useful. Terraform is a tool for managing your infrastructure as code. But imagine having a single Terraform configuration file for managing your entire cloud environment. Sounds challenging, right? If you have a single Terraform file for all the infrastructure components within your environment, the code will be unreadable. As your business scales, your code inevitably will too. Thus you should break your code into reusable modules so that it’s readable and easy to manage. Modules are used to eliminate repetition. When a set of resources is repeated, the code becomes longer and more difficult to read. Modules are used to eliminate repetition. You can standardize the configuration by placing code in a module. This is useful for when a set of resources must be created in a specific way. When the module is called, the same source code will be used. For example, if you want to deploy database servers with encrypted disks, you can ensure encryption by hardcoding the encryption configuration in a module. You can then call the module when a disk has to be created. Now let’s explore the benefits of using modules in your configuration. First, modules enhance the readability of code by eliminating lines with a call to the source module. They’re reusable. You can write code once and reuse it multiple times across various environments. They’re abstract. You can separate configurations into logical units, reducing their dependency and making them easier to debug. With modules, you can also package sets of resource configurations for consistent resource replication.2. Let's practice!
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