Using Terraform and Ansible

First of all, create an AWS user. Keep its ACCESS_KEY and SECRET_ACCESS_KEY. You will also need a key to connect in your instances.

Remember that this key must be created in the same region you are creating your resources using terraform. And its permissions must be 0400.

Now, use the Vagrantfile to boot up a VM in order to install our stuff.

vagrant up
vagrant ssh master

In our master VM, install terraform:

curl -O https://releases.hashicorp.com/terraform/0.11.13/terraform_0.11.13_linux_amd64.zip
yum install -y unzip git
unzip terraform_0.11.1_linux_amd64.zip
chmod +x terraform
mv terraform /usr/bin/
terraform version

Now, we need to get our files into our VM:

git clone https://github.com/mschirbel/terraform-ansible.git
cd terraform-ansible/

Now, we initiate our terraform folder:

cd terraform/
terraform init/

And we create our infrastructure:

terraform apply

Now, we go into our NAT instance:

ssh ec2-user@<NAT PUBLIC IP> -i ansible.pem

For our ansible example, we are going to use the Wordpress-nginx from the offical GitHub repo.

Download this file by using:

git clone https://github.com/ansible/ansible-examples/tree/master/wordpress-nginx.git
cd wordpress-nginx

Now we need to install Ansible:

sudo su - 
yum install ansible -y

Now move the hosts file to /etc/ansible:

mv hosts /etc/ansible/

This hosts file looks like this:

[webserver]
<webserver-private-ip>

[database]
<database-private-ip>

Change it to use our private IP from the webserver/database instances.

Now, move our key to your ~/.ssh folder:

mv ansible.pem ~/.ssh/

Now you may be able to ping your servers:

ansible -m ping all

If you got it right, just install wordpress:

ansible-playbook site.yml --key-file "~/.ssh/ansible.pem"