OCI Linux Python App

This repository is an example of a Terraform and Ansible deployment of a Linux instance with Python App installed as Systemd Unit.

The Python App will be listening to port 3000.

Recommendation:

git clone this repository on OCI Cloud Shell

git clone [email protected]:vmleon/oci-linux-python-app.git

Follow the steps in How-to

How-to

Terraform

Terraform is going to deploy all the network necessary. Virtual Cloud Network, Internet Gateway, Subnets and Route Tables as well as open port for the Python App with a Security List.

Then, Terraform is going to deploy the Linux compute instance.

Change to terraform folder:

cd terraform

There are mainly two files: network.tf and compute.tf that contains all the terraform scripts to deploy the IaaS.

Init Terraform provider:

terraform init

Plan the deployment

terraform plan

Answer yes when asked

If no errors, Apply the deployment

terraform apply

Answer yes when asked

Ansible

Ansible is going to provision the linux with all the necessary tools and the python application.

From the terraform folder:

ansible-playbook -i generated/app.ini ../ansible/server/server.yaml

When asked:

Are you sure you want to continue connecting (yes/no/[fingerprint])?

Answer yes and enter.

Python App

You can SSH into the machine with:

ssh opc@<PUBLIC_IP>

And test the application with:

curl <PUBLIC_IP>:3000

You can change the code (vim) and reload the app with:

sudo systemctl restart app