nano-devops-05

Capstone project for Udacity Dev-Ops Nanodegree: develop a CI/CD pipeline for micro services applications with either blue/green deployment or rolling deployment.

CI CD Pipeline

The CI CD pipeline is as follows for this project. For initial set up:

Set up jenkins
Install dependencies for local development
Create AWS infrastructure

For application development:

Make development change
Commit to git
Update AWS stack using ./awsCoUp.sh commands listed below if required
Push to repository
Jenkins build automatically runs based on triggers
- Files are linted
- Docker image build and uploaded to ECR
- ECS tasks updated to run new Docker image using rolling deployment

Running the stuff

There is a Makefile that contains lots of useful commands. Running make will list them, like the below output.

help:           Show this help.
setup:          Create the virtial environment to run this project
env:            List the environment versions
lint:           Check the validity of the project files
test:           Run the tests for this prject
install:        Install the required imports for this project
docker-build:   Build the docker image and list available docker images
docker-upload:  Upload the docker image to AWS
start-api:      Run the python application locally

Creating the infrastructure

From the base of this repository run the following to create or update the deployment.

aws configure # set to credentials with appropriate access
cd scripts; ./awsCoUp.sh network ../cloudformation/01-network.yml ../cloudformation/01-network-parameters.json; cd ..
# Wait for the network stack to be complete
cd scripts; ./awsCoUp.sh cluster ../cloudformation/02-cluster.yml ../cloudformation/02-cluster-parameters.json; cd ..