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terraform-aws

Terraform AWS provisioning examples for beginners

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Terraform Init With s3 Backend

terraform init \
    -backend-config="key=dev/vpc.tfstate" \
    -backend-config="bucket=dcube-terraform-state" \
    -backend-config="region=us-west-2" \
    -backend-config="dynamodb_table=terraform-state-lock" \
    -var-file=../../../vars/dev/vpc.tfvars

VPC Provisioning

cd into the environments/dev/vpc directory and run the following commands:

  1. Init Terraform in the directory environments/dev/vpc
terraform init
  1. To preview the changes in code
terraform plan -var-file=../../../vars/dev/vpc.tfvars
  1. To apply the changes
terraform apply -var-file=../../../vars/dev/vpc.tfvars
  1. To destroy the resources created using the code
terraform destroy -var-file=../../../vars/dev/vpc.tfvars


#### RDS Provisioning

cd into the `environments/dev/rds` directory and run the following commands:

1. Init Terraform in the directory `environments/dev/rds`

terraform init

2. To preview the changes in code

terraform plan -var-file=../../../vars/dev/rds.tfvars

3. To apply the changes

terraform apply -var-file=../../../vars/dev/rds.tfvars

4. To destroy the resources created using the code

terraform destroy -var-file=../../../vars/dev/rds.tfvars


### ALB and ASG Provisioning

cd into the `environments/dev/alb-asg` directory and run the following commands:

1. Init Terraform in the directory `environments/dev/alb-asg`

terraform init

2. To preview the changes in code

terraform plan -var-file=../../../vars/dev/alb-asg.tfvars

3. To apply the changes

terraform apply -var-file=../../../vars/dev/alb-asg.tfvars

4. To destroy the resources created using the code

terraform destroy -var-file=../../../vars/dev/alb-asg.tfvars


## EC2 Instance Provisioning

1. Navigate to the `environment/dev` folder:

```bash
cd environment/dev
  1. Open the ec2.tfvars file and modify it with your desired details. This file contains variables used in the Terraform configuration.

Deployment

  1. Initialize Terraform in the working directory:
terraform init
  1. Create an execution plan:
terraform plan -var-file=../../../vars/dev/ec2.tfvars
  1. Apply the changes to create the EC2 instance:
terraform apply -var-file=../../../vars/dev/ec2.tfvars
  1. To destroy the EC2 instance and associated resources:
terraform destroy -var-file=../../../vars/dev/ec2.tfvars

Note: Always review the execution plan (terraform plan) before applying changes to avoid unintended modifications.

AWS Organization Tag Policy Creation.

  1. Navigate to the environment/dev folder:
cd environment/tag-policy
  1. Open the tag-policy.tfvars file and modify it with your desired details. This file contains variables used in the Terraform configuration.

Deployment

  1. Initialize Terraform in the working directory:
terraform init
  1. Create an execution plan:
terraform plan -var-file=../../../vars/dev/tag-policy.tfvars
  1. Apply the changes to create the Tag Policy:
terraform apply -var-file=../../../vars/dev/tag-policy.tfvars
  1. To destroy the Tag Policy:
terraform destroy -var-file=../../../vars/dev/tag-policy.tfvars

Note: Always review the execution plan (terraform plan) before applying changes to avoid unintended modifications.

Terraform Command Reference

Update all outputs:

terraform refresh

Show all outputs:

terraform show