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Terraform tips & tricks: loops, if-statements, and gotchas

Sumit Rawal answered on May 14, 2023 Popularity 1/10 Helpfulness 1/10


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  • Terraform tips & tricks: loops, if-statements, and gotchas


    Terraform is a declarative language. As discussed in Part 1 of this series, infrastructure-as-code in a declarative language tends to provide a more accurate view of what’s actually deployed than a procedural language, so it’s easier to reason about and makes it easier to keep the codebase small. However, certain types of tasks are more difficult in a declarative language.

    For example, because declarative languages typically don’t have for-loops, how do you repeat a piece of logic—such as creating multiple similar resources—without copy and paste? And if the declarative language doesn’t support if-statements, how can you conditionally configure resources, such as creating a Terraform module that can create certain resources for some users of that module but not for others?

    Fortunately, Terraform provides a few primitives—namely, the meta-parameter count, for_each and for expressions, a ternary operator, and a large number of functions—that allow you to do certain types of loops and if-statements. Here are the topics I’ll cover in this blog post:



    Terraform Gotchas 

    Popularity 1/10 Helpfulness 1/10 Language go
    Source: Grepper
    Tags: go terraform
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    Contributed on May 14 2023
    Sumit Rawal
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