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Infrastructure as Code

Preqreqs:

  • terraform 0.13.1 on the local deploy machine
  • ansible (installed from apt on the local machine)

Terraform is used to deploy resources on digital ocean. Then once the resources are deployed, ansible is used to configure them.

Most of this was created from this guide: https://www.digitalocean.com/community/tutorials/how-to-use-terraform-with-digitalocean#step-4-%E2%80%94-using-terraform-to-create-the-nginx-server

Everything is made to work via setting two environment variables. The DO_PAT is the digital ocean API token. The pvt_key is set to the key which should be rolled out to the deployed resources.

Terraform Commands:

To plan: terraform plan -var "do_token=${DO_PAT}" -var "pvt_key=$HOME/.ssh/id_rsa" -var "pub_key=$HOME/.ssh/id_rsa.pub"

To apply: terraform apply -var "do_token=${DO_PAT}" -var "pvt_key=$HOME/.ssh/id_rsa" -var "pub_key=$HOME/.ssh/id_rsa.pub"

To show state: terraform show terraform.tfstate

To destroy: terraform plan -destroy -out=terraform.tfplan \ -var "do_token=${DO_PAT}" \ -var "pvt_key=$HOME/.ssh/id_rsa" \ -var "pub_key=$HOME/.ssh/id_rsa.pub"

to make the destroy plan and terraform apply terraform.tfplan

Ansible

https://www.digitalocean.com/community/tutorials/how-to-use-ansible-with-terraform-for-configuration-management