anubhavmishra / hashi-demo-app

Demonstration Application for HashiCorp Tools (Consul, Terraform, Nomad, Vault Eventually...)

Multi-tier application (3), responsive, and leverages technologies and languages that are common place in developer communities. It was designed as cloud native first from a Docker perspective (included is the docker compose file) but also includes the Kubernetes YAML file for deploying to a Kubernetes cluster.

Application Description

Tier 1 - Frontend Application - User Presentation

• Angular front end with VMware ClarityUI (https://vmware.github.io/clarity/)
• NGINX hosting Angular app and also providing reverse proxy functionality to the App Tier. Reason for this is since Angular is a client side extension, connecting to the app directly causes it to fail since it can't resolve DNS
• Messaging Application leverages Sockets.IO to open a Socket channel between the client and server for rapid updates

Tier 2 - App Tier - API

• Python Flask based application
• Handles interaction between the Frontend and Database tier, and the Frontend and the websocket interaction
• Scalable to N number of pods

Tier 3 - DB Tier - Data

• Postgresql 10 database (named 'posts')
• Precreated table (named 'textData')
• Do not scale this pod; bad things will happen