Terraform introduction:

Terraform is an infrastructure as a code {Iac} tool, it is cloud-agnostic and allows a single configuration. it also used to manage multiple providers and handle cross-cloud dependencies.

Terraform files uses the extension .tf

Terraform Commands:

1. terraform init: initializes a terraform dir and download providers plugins
2. terraform validate: To make sure that terraform scripts are correct
3. terraform plan: It gives a detailed execution plan by terraform
4. terraform apply --auto-approve: (creates the infrastructure with non-interactive session)
5. terraform destroy --auto-approve: (To destroy the infrastructure with non-interactive session)
6. terraform fmt: to check the format of terraform file written.
7. terraform import: to import a resources not created by terraform into terraform to manage it, Which would be found in the terraform state file
8. terraform.tfstate: It records all infrastructure created in the console
9. terraform show: to display all the resources under the mgt of terraform and many more.

Terraform Installation:

Note: ON UBUNTU SERVER

a. Install Terraform CLI b. Install AWS CLI c. Install VS Code Editor - recommended for this course d. Install HashiCorp Terraform plugin for VS Code - recommended

sudo adduser terraform
sudo echo "terraform  ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/terraform
sudo su - terraform

1. Update apt repo

sudo apt-get update -y

3. Amazon CLI Installation:

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

4. Terraform CLI Installation:

wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
sudo apt update && sudo apt install terraform

5. Add a role to the server you are using to access EKS worker nodes. (Administrative Access)
   • And configure access & secret access keys for the server to ensure interaction with AWS API

For Window Server: 10

1. install aws cli using AWS Docs
2. Configure aws cli using (aws configure)
3. Install terraform for windows from terraform docs