Terraform Configuration Language Syntax

Step-01: Introduction

• Understand Terraform Language Basics
• Understand Blocks
• Understand Arguments, Attributes & Meta-Arguments
• Understand Identifiers
• Understand Comments

Step-02: Terraform Configuration Language Syntax

• Understand Blocks
• Understand Arguments
• Understand Identifiers
• Understand Comments
• Terraform Configuration
• Terraform Configuration Syntax

# Template
<BLOCK TYPE> "<BLOCK LABEL>" "<BLOCK LABEL>"   {
  # Block body
  <IDENTIFIER> = <EXPRESSION> # Argument
}

# AWS Example
resource "aws_instance" "ec2demo" { # BLOCK
  ami           = "ami-04d29b6f966df1537" # Argument
  instance_type = var.instance_type # Argument with value as expression (Variable value replaced from varibales.tf
}

Step-03: Understand about Arguments, Attributes and Meta-Arguments.

• Arguments can be required or optional
• Attribues format looks like resource_type.resource_name.attribute_name
• Meta-Arguments change a resource type's behavior (Example: count, for_each)
• Additional Reference
• Resource: AWS Instance
• Resource: AWS Instance Argument Reference
• Resource: AWS Instance Attribute Reference
• Resource: Meta-Arguments

Step-04: Understand about Terraform Top-Level Blocks

• Discuss about Terraform Top-Level blocks
• Terraform Settings Block
• Provider Block
• Resource Block
• Input Variables Block
• Output Values Block
• Local Values Block
• Data Sources Block
• Modules Block