The goal of this part is to automate infrastructure deployments by using these tools:
- Terraform: allows us to define infrastructure as code and easily deploy it (by spawning machines automatically)
- Ansible: deploys all the software stack on a server after it has been deployed by Terraform
terraform-inventory: a Go app that converts the Terraform state file into an Ansible playbook
All the stuff resides on terraform folder.
For our needs, Terraform handles Public Cloud Instances deployments on OVH thanks to the OpenStack API and also handles DNS entry creation/deletion.
Before using it, please read the Terraform doc on their website and populate
the terraform.tfvars with the API credentials .
cd terraform
cp terraform.tfvars.default terraform.tfvars
# Add your credentials
vim terraform.tfvars
# Plan and apply your deployment
terraform plan
terraform applyPlease note that Terraform keeps a file named terraform.tfstate which is
updated after each deployment, in order to keep track of the currently deployed
machines. Thus, if you want to run a deployment from a different machine that
the one that spawned the initial infra, you have to share the
terraform.tfstate before. Otherwise, a new infra will be deployed!
Todo