Using maps
So far in this book, we have studied sample code using standard variable types (string, numeric, or Boolean). However, the Terraform language has other types of variables such as lists, sets, maps, tuples, and even more complex object variables.
Among these variable types are maps, which are represented by a collection of key-value elements and are widely used to write dynamic and scalable Terraform configurations.
Maps can have several uses, which are as follows:
- To put all the properties of a block in a Terraform resource into a single variable
- To have a key-value reference table of elements that will be used in the Terraform configuration
- To declare data for multiple instances of the same resource, which will then iterate over the map via
for_each
In this recipe, we will see a simple and practical case of using a map variable. For this recipe, the role of map is to dynamically define all the tags of an Azure resource, but it can...
