Helm Charts Guide

my-chart/ ├── Chart.yaml # Chart metadata ├── values.yaml # Default configuration values ├── charts/ # Chart dependencies ├── templates/ │ ├── deployment.yaml │ ├── service.yaml │ ├── ingress.yaml │ ├── configmap.yaml │ ├── _helpers.tpl # Template helpers │ └── NOTES.txt # Post-install notes └── .helmignore

# values.yaml replicaCount: 3 image: repository: myregistry/myapp tag: "1.2.3" pullPolicy: IfNotPresent service: type: ClusterIP port: 80 ingress: enabled: true host: example.com resources: limits: cpu: 500m memory: 256Mi # templates/deployment.yaml apiVersion: apps/v1 kind: Deployment metadata: name: {{ include "my-chart.fullname" . }} labels: {{- include "my-chart.labels" . | nindent 4 }} spec: replicas: template: spec: containers: - name: image: ":" imagePullPolicy:

# Add repo helm repo add bitnami https://charts.bitnami.com/bitnami helm repo update # Search helm search repo bitnami/postgresql # Install helm install my-release bitnami/postgresql \ --namespace db --create-namespace \ --set auth.postgresPassword=secret # Install from local chart helm install my-app ./my-chart -f custom-values.yaml # Upgrade helm upgrade my-release bitnami/postgresql \ --set image.tag=16.1.0 # Upgrade or install helm upgrade --install my-release ./my-chart # Rollback helm rollback my-release 1 # rollback to revision 1 # Status and history helm status my-release helm history my-release # Uninstall helm uninstall my-release # Dry-run and debug helm install --dry-run --debug my-app ./my-chart helm template my-app ./my-chart