https://getting-started-with-helm.vertiaitech.com/helm/index.htmlTable of Contents 1. Introduction to Helm What is Helm? Helm Architecture Helm Components Helm 2 vs Helm 3 2. Installing Helm Installing Helm on Linux Installing Helm on Windows Verifying Helm Installation 3. Helm Core Concepts Charts Releases Repositories Values Templates Chart Dependencies 4. Working with Helm Charts Helm Repositories Adding a Repository Updating Repositories Listing Repositories Searching Charts Installing Applications Installing a Chart Installing with Custom Values Installing into a Specific Namespace Managing Releases Listing Releases Viewing Release History Upgrading a Release Rolling Back a Release Uninstalling a Release 5. Working with values.yaml Understanding values.yaml Customizing values Overriding values using CLI Environment-based values files 6. Helm Chart Development Creating a Chart Creating a new Helm chart Helm chart directory structure Chart.yaml explained Helm Templates Template syntax Variables and pipelines Functions Conditionals Loops Template helpers 7. Helm Chart Testing and Debugging helm lint helm template helm install –dry-run Helm debugging techniques 8. Helm Dependency Management Adding dependencies Updating dependencies Using Chart.yaml dependencies 9. Helm Security and Secrets Managing secrets Using external secret tools Helm secrets plugin Security best practices 10. Helm Best Practices Chart versioning Values file management Reusable templates Environment separation Production deployment guidelines 11. Helm in CI/CD Using Helm in GitLab CI/CD Using Helm with ArgoCD Helm with GitOps workflows 12. Helm vs Other Tools Helm vs Kustomize Helm vs Terraform When to use Helm 13. Helm Troubleshooting Common Helm errors Failed release recovery Debugging template issues 14. Helm Commands Cheat Sheet Common Helm commands Helm quick reference Official Helm Documentation https://helm.shHugoen-ushttps://getting-started-with-helm.vertiaitech.com/helm/session01/index.htmlMon, 01 Jan 0001 00:00:00 +0000https://getting-started-with-helm.vertiaitech.com/helm/session01/index.htmlHelm is the package manager for Kubernetes, designed to simplify deployment, configuration, and lifecycle management of Kubernetes applications using reusable packages called charts. 🧰 Helm Is Like APT/YUM for Kubernetes Platform Install Method Example Linux apt install nginx Installs NGINX on system Kubernetes helm install nginx Installs NGINX in cluster Helm Architecture Overview Helm 3 architecture is simple because the Tiller component used in Helm 2 has been removed.https://getting-started-with-helm.vertiaitech.com/helm/session02/index.htmlMon, 01 Jan 0001 00:00:00 +0000https://getting-started-with-helm.vertiaitech.com/helm/session02/index.html✅ Create your own Helm charts from scratch ✅ Customize templates and use values effectively ✅ Host charts on GitHub as a Helm repository Official Documentation 🛠️ Step 1: Create a Custom Chart helm create nginx-demo cd nginx-demo This creates the following structure: nginx-demo/ ├── charts/ ├── Chart.yaml ├── templates/ │ ├── deployment.yaml │ ├── _helpers.tpl │ ├── hpa.yaml │ ├── ingress.yaml │ ├── service.yaml │ ├── configmap.yaml │ └── tests/ └── values.yaml NOTES.txt in a Helm Chart NOTES.txt is used to display post-installation instructions to users after a Helm chart is installed.https://getting-started-with-helm.vertiaitech.com/helm/helmfunctions/index.htmlMon, 01 Jan 0001 00:00:00 +0000https://getting-started-with-helm.vertiaitech.com/helm/helmfunctions/index.htmlTemplate Functions and Pipelines 🧭 Helm Template Functions Cheat Sheet with Examples This document provides a comprehensive list of Helm template functions used in Helm charts, with real-world examples using .Values, .Chart, and .Release. 🔧 Commonly Used Functions 🗝️ default – Provide a fallback value replicaCount: {{ .Values.replicaCount | default 3 }} If .Values.replicaCount is not set in values.yaml, it defaults to 3. ❗ required – Make a value mandatory apiVersion: v1 kind: Secret metadata: name: my-secret data: password: {{ required "A password is required!" .Values.password | b64enc }} apiVersion: v1 kind: Secret metadata: name: my-secret data: {{- if .Values.password }} password: {{ .Values.password | b64enc | quote }} {{- else }} password: "" {{- end }} Will throw an error at install/upgrade if password is not provided.https://getting-started-with-helm.vertiaitech.com/helm/additional/index.htmlMon, 01 Jan 0001 00:00:00 +0000https://getting-started-with-helm.vertiaitech.com/helm/additional/index.html🔍 Preview Manifests Before Installing To preview the rendered Kubernetes manifests from a Helm chart without installing it, use: helm template <release-name> <chart-path-or-name> Example: helm template my-nginx bitnami/nginx 🧪 Simulate Installation (Dry Run) To simulate an install with all validations (including custom values): helm install <release-name> <chart-path-or-name> --dry-run --debug Example: helm install my-nginx bitnami/nginx --dry-run --debug 📥 Get Values from Existing Release To retrieve the custom values used in an existing Helm release: