Podcast
Questions and Answers
Which file extensions are used for Terraform configuration files?
Which file extensions are used for Terraform configuration files?
Which command is used to initialize a Terraform directory?
Which command is used to initialize a Terraform directory?
What is HCL used for in Terraform?
What is HCL used for in Terraform?
What are the possible variable types in Terraform?
What are the possible variable types in Terraform?
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What does the terraform.tfvars file do?
What does the terraform.tfvars file do?
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What are the main files in a typical Terraform module?
What are the main files in a typical Terraform module?
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What are the three main actions that Terraform can perform on its controlled environment?
What are the three main actions that Terraform can perform on its controlled environment?
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What is the purpose of declaring variables in Terraform?
What is the purpose of declaring variables in Terraform?
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What is the description field used for in a variable block?
What is the description field used for in a variable block?
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What takes precedence when setting variable values in Terraform?
What takes precedence when setting variable values in Terraform?
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Which of the following statements about Terraform outputs is correct?
Which of the following statements about Terraform outputs is correct?
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What is the purpose of the 'sensitive' argument in Terraform outputs?
What is the purpose of the 'sensitive' argument in Terraform outputs?
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What are Terraform resources?
What are Terraform resources?
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What does the 'depends_on' field in Terraform resources allow you to do?
What does the 'depends_on' field in Terraform resources allow you to do?
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What does the tfstate file in Terraform do?
What does the tfstate file in Terraform do?
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What can Terraform output values help you see?
What can Terraform output values help you see?
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What is the purpose of the 'output' block in Terraform modules?
What is the purpose of the 'output' block in Terraform modules?
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What type of information can be shown in the CLI output using Terraform outputs?
What type of information can be shown in the CLI output using Terraform outputs?
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What can be specified after the resource keyword in Terraform configuration files?
What can be specified after the resource keyword in Terraform configuration files?
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What do Terraform resources allow users to declare?
What do Terraform resources allow users to declare?
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Study Notes
Terraform Configuration Files
- Terraform configuration files use
.tf
or.tf.json
file extensions.
Terraform Initialization
- The
terraform init
command is used to initialize a Terraform directory.
HCL in Terraform
- HCL (HashiCorp Configuration Language) is used to write Terraform configuration files.
Variable Types in Terraform
- Terraform supports several variable types, including:
- String
- Number
- Bool
- List
- Map
- Object
- Null
Terraform.tfvars File
- The
terraform.tfvars
file is used to set input variables for Terraform configurations.
Main Files in a Terraform Module
- The main files in a typical Terraform module include:
-
main.tf
-
variables.tf
-
outputs.tf
-
Terraform Actions
- Terraform can perform three main actions on its controlled environment:
- Create
- Update
- Delete
Declaring Variables in Terraform
- Declaring variables in Terraform allows users to:
- Store and reuse values
- Externalize configuration
Description Field in Variable Block
- The description field in a variable block is used to provide a human-readable description of the variable.
Precedence of Variable Values
- When setting variable values in Terraform, the following order of precedence applies:
- Environment variables
-
terraform.tfvars
file -
*.auto.tfvars
files - Command-line flags
Terraform Outputs
- Terraform outputs can be used to:
- Share data between modules
- Display information to the user
- Statements about Terraform outputs:
- They are used to expose values from a Terraform module.
- They can be accessed using the
terraform output
command.
Sensitive Argument in Terraform Outputs
- The
sensitive
argument in Terraform outputs is used to:- Hide sensitive output values
Terraform Resources
- Terraform resources represent infrastructure objects, such as:
- Virtual machines
- Databases
- Network interfaces
Depends_on Field in Terraform Resources
- The
depends_on
field in Terraform resources allows users to:- Specify resource dependencies
TFState File
- The
tfstate
file is used to store the current state of the Terraform-managed infrastructure.
Terraform Output Values
- Terraform output values can help users see:
- Values of output variables
- Resource attributes
Output Block in Terraform Modules
- The purpose of the
output
block in Terraform modules is to:- Expose values from a Terraform module
CLI Output using Terraform Outputs
- Terraform outputs can be used to display information in the CLI output, including:
- Strings
- Numbers
- Lists
- Maps
Resource Keyword in Terraform Configuration Files
- After the
resource
keyword in Terraform configuration files, users can specify:- Resource types (e.g.,
aws_instance
) - Resource names
- Resource types (e.g.,
Terraform Resources
- Terraform resources allow users to declare:
- Infrastructure components
- Their properties
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Description
Test your knowledge on Terraform, a powerful CLI tool used for infrastructure as code. Learn about its key features, configuration files, and how to initialize a Terraform directory. Put your Terraform skills to the test with this informative quiz.