Terraform Modules
Deploying infra using modules & Review infra using Modules
Learning Outcome
5
Recognize modules for scalable infrastructure
4
Review infrastructure created with modules
3
Understand module execution during deployment
2
Use modules in root configuration
1
Understand Terraform modules for infrastructure deployment
Topic Name-Recall(Slide3)
Hook/Story/Analogy(Slide 4)
Transition from Analogy to Technical Concept(Slide 5)
Deploying Infrastructure Using Modules
When using modules, the main Terraform configuration (root module)
calls reusable modules that contain infrastructure definitions
Root Module
Module
Infrastructure definitions
Module
Infrastructure definitions
Module
Infrastructure definitions
Deploying Infrastructure Using Modules
The deployment process works as follows:
The root configuration calls a module
01
The module contains resource definitions
03
Terraform processes the module and creates the required infrastructure
02
Modules allow teams to deploy standardized infrastructure components easily
Example: Deploying Infrastructure with a Module
Suppose we created a module that provisions an EC2 instance
module "web_server" {
source = "./modules/ec2"
instance_type = "t2.micro"
ami_id = "ami-123456"
}
Explanation:
module "web_server" → Name of the module instance
1
source → Location of the module
2
instance_type and ami_id → Values passed to module variables
3
Terraform reads the module and deploys the defined infrastructure
How Terraform Processes Modules
When Terraform runs the configuration:
Terraform loads the root configuration
It detects module blocks
Terraform loads module code from the specified source
Variables are passed from the root module to the child module
Terraform creates infrastructure resources defined inside the module
This allows Terraform to manage
complex infrastructure using reusable modules
Reviewing Infrastructure Using Modules
After deploying infrastructure, it is important to review and verify the deployed resources
Reviewing infrastructure helps ensure:
Resources were created successfully
Resources were created successfully
Resources were created successfully
Core Concepts (Slide 7)
Core Concepts (.....Slide N-3)
Summary
5
Modules help manage large infrastructure efficiently
4
Outputs return useful information from modules
3
Variables pass configuration values to modules
2
The root module calls child modules to provision infrastructure
1
Terraform modules enable reusable infrastructure deployment
Quiz
Which block is used to deploy infrastructure using a Terraform module?
A. provider
B. module
C. resource
D. variable
Quiz
Which block is used to deploy infrastructure using a Terraform module?
A. provider
B. module
C. resource
D. variable
