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db-deployment.yaml

+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres-master 
+  labels:
+    app: $SERVICENAME
+  namespace: go
+spec:
+  ports:
+    - port: 5432 
+  selector:
+    app: $SERVICENAME
+    tier: backend 
+  clusterIP: None
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pv-claim
+  labels:
+    app: $SERVICENAME
+  namespace: go
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 4Gi
+---
+apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+kind: Deployment
+metadata:
+  name: postgres-master
+  labels:
+    app: $SERVICENAME
+  namespace: go
+spec:
+  selector:
+    matchLabels:
+      app: $SERVICENAME
+      role: master
+      tier: backend
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: $SERVICENAME
+        role: master
+        tier: backend
+    spec:
+      containers:
+      - name: master
+        image: dockreg.vnetcloud.com/postgres-microsvc:v0.3 
+        resources:
+          requests:
+            cpu: 1m
+            memory: 20Mi
+        ports:
+        - containerPort: 5432