Capstone Project (Cloud DevOps Engineer)

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 ..

Jenkins set up

Full jenkins set up details can be found in jenkinsSetup.md.

Output

From running the above the following will be created.

The application is currently running here is a link to the load balancer.

AWS Stacks:

Jenkins build when the lint fails:

Jenkins build when the lint passes and deploys to ECR:

ECR with new image uploaded:

Hello world application running:

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