Bits of .NET

📦 Kubernetes Apps Need a Package Manager

50 YAML files for one app? Helm packages them. Templates, values, versioning, rollback. Like apt-get for Kubernetes.

📝 Install Helm

# Install Helm
curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash

# Add repos
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo update

# Install popular charts
helm install my-postgres bitnami/postgresql
helm install nginx-ingress ingress-nginx/ingress-nginx

# List releases
helm list

🎯 Create Your Own Chart

# Create chart skeleton
helm create myapp

# Structure:
myapp/
  Chart.yaml          # Chart metadata
  values.yaml         # Default configuration
  templates/          # Kubernetes YAML templates
    deployment.yaml
    service.yaml
    ingress.yaml
    _helpers.tpl

# Install chart
helm install myapp-release ./myapp --set image.tag=v1.0.0

# Upgrade
helm upgrade myapp-release ./myapp --set replicaCount=3

# Rollback
helm rollback myapp-release 1

💡 Benefits

• Reusable Kubernetes templates
• Parameterization (values.yaml overrides)
• Version control for deployments
• Easy rollback (helm rollback)
• Dependency management