This is a very simple application exposing just one endpoint /name which responds with a message of the format 30/07/2021 12:00 Hello TG, your password is 1234 consisting of current date-time, a custom name and a password made available to it through environment variables. The application is deployed on a kubernetes cluster and will be accessible through a custom domain defined by the associated Ingress object.

• AWS: For providing the infrastructure
• Bash: To write automation in a simple form
• Kubernetes (1.21): As the orchestration layer to manage workloads
• k3d (4.4.7): To prepare purgeable kubernetes cluster
• Docker (20.10.4): For building and sharing containerized application
• Helm (3.6.2): Supplemental kubernetes tool to create/share configurable k-native applications

• A Dockerfile: which is used to build an image using github actions.
• The nameapp.py application exposing /name endpoint which when hit return a string in predefined format.
• Bunch of manifest files to deploy the application and make it available for users.
• A shell script stack-up.sh to automate environment creation and deploying the application.

Whenever a PR is raised with changes in either Dockerfile or nameapp.py, the github action workflow is triggered to build and push the image to set repository with custom tags.

Once the tag is built and pushed you just need to run stack-up.sh on any machine running on amazon-linux-2 (as some installation commands are specific to that but can be generalized if required, used a t3.xlarge machine running ami-00f22f6155d6d92c5 in eu-central-1 for testing here).

The stack-up.sh performs below tasks:

• Prepares the environment by installing tools like docker, helm, k3d and kubectl cli.
• Creates a purgeable kubernetes cluster with single master and single worker.
• Deploys nginx-ingress-controller using helm.
• Deploys all the manifests to bring up the application.
• Hits the application through ingress (using the nodeport type nginx-ingress-controller service).