Multiple EC2 Ubuntu Instances Deployment and Provisioning with Terraform & Ansible

• Automatically populate Ansible's inventory post-deployment

• Uses locally generated elliptic curve key-pairs

• Currently only installs Nginx (adjust if needed)

Requirements

make sure all three are installed on your system:

• AWS cli
• Terraform
• Ansible
• JQ to parse JSON

Procedure

1. Create your key-pair locally.

    # create your key-pair
    ssh-keygen -t ed25519 -C ubuntu

2. Give the private key proper permissions

    #  Make sure the key is not too open
    chmod 600 ~/.ssh/ansible-key

3. Export Ansible's config file to prevent ssh from checking our key.

    # export Ansible's config file
    export ANSIBLE_CONFIG=./ansible.cfg

4. Initialize Terraform.

    # run terraform init
    terraform init

5. Deploy.

    # run terraform plan or terraform apply
    # don't forget to adjust the variables before doing so
    terraform apply --auto-approve