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Deploy DockerHub Image to K3s

Create a Deployment YAML without PVC​

apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres-deployment
  namespace: test-app
  labels:
    app: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      restartPolicy: Always
      containers:
      - name: postgres
        image: docker.io/dedkola/postgres:17
        imagePullPolicy: Always
        ports:
        - containerPort: 5432
        resources:
          requests:
            memory: "1Gi"
            cpu: "1000m"
          limits:
            memory: "2Gi"
            cpu: "2000m"
     
        volumeMounts:
        - name: postgres-storage
          mountPath: /var/lib/postgresql/data
      volumes:
      - name: postgres-storage
        emptyDir: {}  # For production, use PersistentVolumeClaim
---
apiVersion: v1
kind: Service
metadata:
  name: postgres-service
  namespace: test-app
spec:
  type: LoadBalancer
  selector:
    app: postgres
  ports:
    - protocol: TCP
      port: 5432
      targetPort: 5432

Check resources​

kubectl top pod -n test-app

Check logs​

kubectl logs postgres-deployment-6577845884-8964z  -n test-app

&

kubectl describe pod  postgres-deployment-6577845884-8964z -n test-app

With PVC​

apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres-deployment
  namespace: test-app
  labels:
    app: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      restartPolicy: Always
      containers:
      - name: postgres
        image: docker.io/dedkola/postgres:17
        imagePullPolicy: Always
        ports:
        - containerPort: 5432
        resources:
          requests:
            memory: "1Gi"
            cpu: "1000m"
          limits:
            memory: "2Gi"
            cpu: "2000m"
     
        volumeMounts:
        - name: postgres-storage
          mountPath: /var/lib/postgresql/data
      volumes:
      - name: postgres-storage
        persistentVolumeClaim:
          claimName: postgres-pvc
---
apiVersion: v1
kind: Service
metadata:
  name: postgres-service
  namespace: test-app
spec:
  type: LoadBalancer
  selector:
    app: postgres
  ports:
    - protocol: TCP
      port: 5432
      targetPort: 5432
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-pvc
  namespace: test-app
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: local-path
  resources:
    requests:
      storage: 10Gi