Upload files to "z2"

z2/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: db-init
+  namespace: notes-app
+data:
+  init.sql: |
+    CREATE TABLE IF NOT EXISTS notes (
+        id SERIAL PRIMARY KEY,
+        content TEXT NOT NULL,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    );
+
+    INSERT INTO notes (content) VALUES
+        ('Welcome to the Notes App!'),
+        ('Add, view, and delete notes using the web interface.');

z2/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: backend
+  namespace: notes-app
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: backend
+  template:
+    metadata:
+      labels:
+        app: backend
+    spec:
+      containers:
+        - name: backend
+          image: notes-backend:latest
+          imagePullPolicy: Never
+          env:
+            - name: DATABASE_URL
+              value: postgresql://appuser:apppassword@db:5432/appdb
+          ports:
+            - containerPort: 5000
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: frontend
+  namespace: notes-app
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: frontend
+  template:
+    metadata:
+      labels:
+        app: frontend
+    spec:
+      containers:
+        - name: frontend
+          image: notes-frontend:latest
+          imagePullPolicy: Never
+          ports:
+            - containerPort: 80
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: adminer
+  namespace: notes-app
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: adminer
+  template:
+    metadata:
+      labels:
+        app: adminer
+    spec:
+      containers:
+        - name: adminer
+          image: adminer:4
+          ports:
+            - containerPort: 8080

z2/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: notes-app

z2/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: db
+  namespace: notes-app
+spec:
+  selector:
+    app: db
+  ports:
+    - port: 5432
+      targetPort: 5432
+  clusterIP: None
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: backend
+  namespace: notes-app
+spec:
+  selector:
+    app: backend
+  ports:
+    - port: 5000
+      targetPort: 5000
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  namespace: notes-app
+spec:
+  selector:
+    app: frontend
+  type: NodePort
+  ports:
+    - port: 80
+      targetPort: 80
+      nodePort: 30080
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: adminer
+  namespace: notes-app
+spec:
+  selector:
+    app: adminer
+  type: NodePort
+  ports:
+    - port: 8080
+      targetPort: 8080
+      nodePort: 30081

z2/statefulset.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: postgres-pv
+  namespace: notes-app
+spec:
+  capacity:
+    storage: 1Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: /data/notes-postgres
+  persistentVolumeReclaimPolicy: Retain
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc
+  namespace: notes-app
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: db
+  namespace: notes-app
+spec:
+  serviceName: db
+  replicas: 1
+  selector:
+    matchLabels:
+      app: db
+  template:
+    metadata:
+      labels:
+        app: db
+    spec:
+      containers:
+        - name: postgres
+          image: postgres:16-alpine
+          env:
+            - name: POSTGRES_DB
+              value: appdb
+            - name: POSTGRES_USER
+              value: appuser
+            - name: POSTGRES_PASSWORD
+              value: apppassword
+          ports:
+            - containerPort: 5432
+          volumeMounts:
+            - name: postgres-storage
+              mountPath: /var/lib/postgresql/data
+            - name: init-sql
+              mountPath: /docker-entrypoint-initdb.d
+      volumes:
+        - name: postgres-storage
+          persistentVolumeClaim:
+            claimName: postgres-pvc
+        - name: init-sql
+          configMap:
+            name: db-init