Learn HELM with Real Code Examples

# helm/demo/Chart.yaml
apiVersion: v2
name: demo-chart
version: 0.1.0

# helm/demo/values.yaml
replicaCount: 2
image:
    repository: nginx
    tag: 1.21
service:
    type: ClusterIP
    port: 80

# helm/demo/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
    name: {{ .Chart.Name }}-deployment
spec:
    replicas: {{ .Values.replicaCount }}
    selector:
        matchLabels:
        app: {{ .Chart.Name }}
    template:
        metadata:
        labels:
        app: {{ .Chart.Name }}
        spec:
        containers:
        - name: {{ .Chart.Name }}
        image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
        ports:
        - containerPort: {{ .Values.service.port }}

# helm/demo/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
    name: {{ .Chart.Name }}-service
spec:
    type: {{ .Values.service.type }}
    selector:
        app: {{ .Chart.Name }}
    ports:
    - port: {{ .Values.service.port }}
        targetPort: {{ .Values.service.port }}

A simple Helm Chart structure with Deployment and Service templates.