新增learn-kubernetes（https://github.com/yyong-brs/learn-kubernetes）相关文件

learn/learn-kubernetes-master/kiamol/ch14/todo-list/update/db-with-exporter.yaml

@@ -0,0 +1,55 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-db
+  namespace: kiamol-ch14-test
+spec:
+  selector:
+    matchLabels:
+      app: todo-db
+  template:
+    metadata:
+      labels:
+        app: todo-db
+      annotations:
+        prometheus.io/port: "9187"
+    spec:
+      containers:
+        - name: db
+          image: postgres:11.6-alpine
+          env:
+          - name: POSTGRES_PASSWORD_FILE
+            value: /secrets/postgres_password
+          volumeMounts:
+            - name: secret
+              mountPath: "/secrets"
+            - name: data
+              mountPath: /var/lib/postgresql/data
+        - name: exporter
+          image: wrouesnel/postgres_exporter:v0.8.0
+          ports:
+            - name: metrics
+              containerPort: 9187
+          env:
+            - name: DATA_SOURCE_URI
+              value: localhost?sslmode=disable
+            - name: DATA_SOURCE_USER
+              value: postgres
+            - name: DATA_SOURCE_PASS
+              valueFrom:
+                secretKeyRef:
+                  key: POSTGRES_PASSWORD
+                  name: todo-db-secret        
+          volumeMounts:
+            - name: secret
+              mountPath: "/secrets"
+      volumes:
+        - name: secret
+          secret:
+            secretName: todo-db-secret
+            defaultMode: 0400
+            items:
+            - key: POSTGRES_PASSWORD
+              path: postgres_password
+        - name: data
+          emptyDir: {}

learn/learn-kubernetes-master/kiamol/ch14/todo-list/update/proxy-with-exporter.yaml

@@ -0,0 +1,38 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-proxy
+  namespace: kiamol-ch14-test
+spec:
+  selector:
+    matchLabels:
+      app: todo-proxy
+  template:
+    metadata:
+      labels:
+        app: todo-proxy
+      annotations:
+        prometheus.io/port: "9113"
+    spec:
+      containers:
+        - name: nginx
+          image: nginx:1.17-alpine          
+          ports:
+            - name: http
+              containerPort: 80              
+          volumeMounts:
+            - name: config
+              mountPath: "/etc/nginx/"
+              readOnly: true
+        - name: exporter
+          image: nginx/nginx-prometheus-exporter:0.8.0
+          ports:
+            - name: metrics
+              containerPort: 9113
+          args:
+            - -nginx.scrape-uri=http://localhost/stub_status
+      volumes:
+        - name: config
+          configMap:
+            name: todo-proxy-config
+