Terraform-Playground

Required AWS packages

• Install AWS CLI
• Configure AWS CLI
• Please note, Configuring AWS using aws configure CLI command, will write the AWS secret and access key to ~/$USER_HOME/.aws/credentials file and it will used to authenticate the terraform infra creation in AWS.

Install and Configure Terraform

• Refer here for installing terraform
• Extract and Add terraform executable path to ENV variables

Terraform setup in Linux based systems

wget https://releases.hashicorp.com/terraform/0.12.24/terraform_0.12.24_linux_amd64.zip
unzip terraform_0.12.24_linux_amd64.zip -d terraform /usr/local/bin/

If terraform executable stored in another path, make sure the path is added in $PATH variable permanently.

AWS Infrastructure Automation

• We will see How to automate the AWS infrastructure creation using Terraform
• As part of the demo code, we will create a Apache webserver and run a sample website
• Architecture of this server follows the single tier method, wherein we will create only a simple Webserver for demo purpose

Basic Terminologies in Terraform

• Providers
  • It should be cloud provider or on-premise provider on which we will create our infrastructure and resources
• Resources
  • This indicates the resources like virtual machines, network components, containers we spin-up on the providers
• Tfstate file
  • This is the state of terraform infrastructure created when we run the commands terraform plan and terraform apply
  • This state file can be stored locally or in a network storage for multi developer environments

Source Code File Details

• main.tf contains the beginning section of terraform code
• So we have to define terraform with required_providers and we have mentioned aws since we are going to create infra in AWS

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Resources

• Terraform Docs
• Terraform Best Practices
• terraform-docs.io
• Amazon EC2 AMI Locator - UBUNTU