Simple WebApp deployed on Google Cloud Platform

This is a simple project that aims to implement a "Hello, World!" type app to a GKE Cluster, configuring Autoscaling, Load-balancing, CI/CD. It was done in just 2 days with little prior experience, so please don't be too harsh :)

GKE Cluster and infrastructure

• The infrastructure for this app was provisioned exclusively using Terraform.
• The GKE cluster is configured to autoscale both vertically and horizontally, although this feature has only seen limited testing.
• The cluster is exposed to the internet using a load-balancer.

CI/CD

• Implemented on a separate Compute Instance (VM) using Ansible & Jenkins.
• Jenkins is set to automatically poll the SCM Repo (this one) each minute and build from the ./webapp folder.
• It is then containerised using Docker and uploaded to gcr.io.
• Ansible reads any .yaml files and updates the GKE deployment using the new build, as well as any changes to the cluster.

As of now, this project is

• Assuming I still have credits on Google Cloud, a fully functional WebApp exposed to the internet.
  • This is actually still a WIP, the load balancer is not yet properly configured. As of now it only works with port-forwarding
• A functional CI/CD Pipeline & Automatization Server.
• A succesful implementation of a K8s Cluster on the cloud.
• A fruitful learning experience.

In the future, I'd like to

• Improve security by using HTTPS, SSL and properly configuring the Firewall and VPC.
• Add proper Monitoring and Notifications.
• Work on the WebApp itself. Develop the Backend in a more suited and familiar language (Python or Java, or maybe I'd learn Kotlin).

If I were to start over, I would

• Deploy Jenkins and Ansible in two separate Containers (probably). Better Performance, but also more Complexity.
• Build from the beginning with Security in mind.
• Have proper git branches and practices (like not exposing my own keys).
• Do a much better job :)