Repository to present a project created using Terraform with the goal of automating resource creation using the AWS platform

• Dependencies

  • Terraform v0.14.3
  • AWS Service Account (at the least EC2 and IAM Permissions)

• How to Authenticate on AWS Provider

  • 1st Option: Export environment variable:

    export AWS_ACCESS_KEY_ID={key_id}
    export AWS_SECRET_ACCESS_KEY={secret_key}

  • 2nd Option: Authenticate using awscli

    aws configure
    #fill the fields with access key id and secret access key

To install awscli see: https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-install.html

Project to automate the EC2 instance creation under ALB (Application Load Balancer) and to configure a Autoscaling Group.

• Resources Provided
  • Role: IAM Role with S3 Access used as instance profile
  • Network:
    • A VPC with two publiC subnets and two private subnets
    • A Security Group to allow ingress request on port 80 and all egress requests
  • EC2: Debian instance using a private subnet and providing apache2 by cloud init script.
  • Loadbalancer: Provides a ALB and attaches the EC2 Instance.
  • Autoscaling:
    • Creates a launch configuration equal to the EC2 Configuration
    • Configures the autoscaling group with minimum size of 1 and maximum size of 3 and attached to ALB
    • Configures the life cycle policy with the following metrics:
      • Scale Up: CPU > 80%
      • Scale Down: CPU < 60%

To execute this project and provide the resources it is recommended to follow the steps below:

• Create the environment

  git clone https://github.com/yesquines/terraform-aws.git
  cd terraform-aws/project_aws/
  terraform init #Initialize the Terraform and providers plugins
  terraform validate #Check any modification syntax
  terraform plan #Plan the execution 
  terraform apply #Apply and configure the project resources

You can modify the variable configurations using the command: terraform apply -var key1=value -var key2=value ... -var keyN=value

• Delete the environment

To finalize and delete all resource, execute the following command:

terraform destroy

See the table below to know about all options defined on variables.tf file

See the table below to know all outputs defined on outputs.tf file

• Terraform AWS Documentation
• VPC with public and private subnets (NAT)
• Debian AMI ID