Variable-Related Issues

Variable-related errors are some of the most common errors you will find while working with Terraform. In the following sections, you will see the errors related to the variable type constraint, variable input validation, and variable precedence.

Type Constraint

• One of the issues you might come across while managing Terraform is incorrect input variable values that cause failures during terraform run.
• You can use the type argument in the variable block to restrict the type of the value accepted for the variable.
• An example is if the total number of instances to be launched by Terraform is controlled by the ec2-count variable, which is expecting a number, but the user inputs the string Two instead of the number 2. Terraform runs would fail in this case.

Input Validation

• At times, even though the value of the type matches the variable, it may not be in the format that is expected. For such use cases, you can use the validation...