Gain insights into Helm, the Kubernetes package manager, to create, package, and deploy applications efficiently. Delve into designing reusable Helm charts for reliable, scalable deployments.

helm-course-docker3.tar.gz

app-repo

dashboard-base

kanban-base

gcloud-bas

dashboard-installed

dashboard-installed-errors

create cluster

kanban-test

kanban-diff-plugin

kanban-publish

kanban-publish-prepare

kanban-advanced-functions

helmfile-installed

cd usercode

helmfile-installed-copy

cd usercode & format script

Are you already working with Kubernetes but tired of writing all these YAML files? Especially when you need to deploy lots and lots of applications?

If so, this course is just for you. You’ll learn about Helm, a popular, CNCF graduated project that's built on top of Kubernetes. Helm is a Kubernetes package manager which helps bundle all K8s objects together. In this course, you’ll create small projects to learn about the basic concepts of Helm and gain hands-on experience in working with it. You’ll also learn how to design reusable Helm charts.

By the time you’re done with this course, you’ll be equipped with the skills required to make reliable, consistent, and scalable deployments with Helm. You’ll be able to use Helm to create, package, configure, and deploy your Kubernetes applications efficiently and effectively.

A Practical Guide to Helm

# Run a Helm chart test

Assuming that we already have a couple of tests written in the `/tests` directory of the chart, we can now go ahead and run them. We can achieve this by running the following `helm test` command:

helm test kanban-frontend --namespace kanban

The output will be as follows:

```
NAME: kanban-frontend
LAST DEPLOYED: Tue Aug 16 13:16:08 2022
NAMESPACE: kanban
STATUS: deployed
REVISION: 1
TEST SUITE:     kanban-frontend-connection-test
Last Started:   Tue Aug 16 13:17:36 2022
Last Completed: Tue Aug 16 13:17:39 2022
Phase:          Succeeded
NOTES:
### 
######

kanban-frontend, version: 1 has been installed, based on "app" Helm Chart!

Here is a short summary of installed application:

Docker base image: wkrzywiec/kanban-app:helm-course
Instances count: 1


######

Useful commands:

To list all Kubernetes resources created in this kanban-frontend Release:

    > kubectl get all --namespace kanban -l app.kubernetes.io/version=kanban-frontend-1

To establish connection with your app:

    > kubectl port-forward svc/kanban-frontend 8080:8080 --namespace kanban 

After that it will be reachable at the address http://localhost:8080

######
###
```



The testing command is pretty simple—it starts with `helm test` followed by the name of a release (in our case it’s `kanban-frontend`). As output, we get a summary of the run tests.


For better insight, it is also recommended to add the `--logs` flag to get the output of the executed script:

Getting Started

Configure Development Environment

Installing Public Helm Charts

Building Custom Helm Charts

Create Single Deployment Using Helm and K8s

Quality Assurance for a Custom Helm Chart

Helm Umbrella Chart

Create and Publish a Customized Helm Chart

Using Helm On a Cloud

Helmfile

Appendix

Install Applications with Helmfile

Build Custom Helm Chart

Run Tests for a Chart

Run a Helm chart test