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PROJECT
Create Multiple Deployments Using Helm
In this project, we'll use Helm 3 to deploy a Ruby on Rails (RoR) application on a Kubernetes cluster. We'll use a published Helm chart to deploy the database and create our own custom Helm chart to deploy the frontend. Finally, we'll use ConfigMaps to share common information between different Services.
You will learn to:
Configure published Helm charts.
Use Helm charts to deploy a web application.
Add dependencies to a web application.
Use ConfigMaps to share information between Kubernetes Services.
Skills
Microservice Architecture
Package Management Using Helm
Container Management Using Docker
Prerequisites
Docker and Docker images basics
Microservice architecture basics
Artifact Hub basics
A good understanding of Helm and its dependencies
Technologies
Helm
Docker
Kubernetes
Project Description
Kubernetes is an open-source platform that lets us deploy and manage containerized applications. Kubernetes manages Services from initial deployment to the final exposure. Kubernetes is also instrumental in the scalability and availability of applications.
Helm is a package manager for Kubernetes. It bundles different Kubernetes resources into a single, easily-deployable package called a Helm chart. Through Helm, we can install applications using a single command.
In this project, we’ll use Kubernetes and Helm command-line tools to perform different operations necessary to deploy a Ruby on Rails (RoR) application with a PostgreSQL database over a Kubernetes cluster.
First, we’ll use Docker to containerize the application and push it to Docker Hub for later use. Then, we’ll use a published Helm chart to deploy the database. We’ll also create a custom Helm chart to deploy the RoR web application. After deployment, we’ll create and inject environment variables into the front-end and back-end containers. Finally, we’ll host the application using Helm for global access.
Project Tasks
1
Set up the Environment
Task 0: Explore the Application
Task 1: Create a Cluster
Task 2: Set up Helm
Task 3: Containerize and Push the Frontend
2
Create the Chart
Task 4: Set up the Chart
Task 5: Add the Database
Task 6: Configure the Database
Task 7: Add Values for ConfigMap
Task 8: Create a ConfigMap
Task 9: Add Values for Service
Task 10: Create a Service
Task 11: Add Values to Deploy the Frontend
Task 12: Create a Deployment
3
Deploy and Access the Chart
Task 13: Deploy the Chart
Task 14: Access the Application
Congratulations!
Relevant Courses
Use the following content to review prerequisites or explore specific concepts in detail.