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

learn/learn-kubernetes-master/kiamol/ch03/lab/README.md

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+kubectl apply -f deployments.yaml
+
+kubectl get pods
+
+> There are two versions of the web app
+
+[services.yaml](./solution/services.yaml) defines a ClusterIP service for the API and a LoadBalancer service for the web app. The selector for the web service uses two labels to ensure only the v2 pod is included.
+
+```
+kubectl apply -f solution/services.yaml
+```
+
+> http://localhost:8088
+
+![](./solution/numbers-web-v2.png)

learn/learn-kubernetes-master/kiamol/ch03/lab/deployments.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: lab-numbers-api
+spec:
+  selector:
+    matchLabels:
+      app: lab-numbers-api
+      version: v1
+  template:
+    metadata:
+      labels:
+        app: lab-numbers-api
+        version: v1
+    spec:
+      containers:
+        - name: api
+          image: kiamol/ch03-numbers-api
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: lab-numbers-web
+spec:
+  selector:
+    matchLabels:
+      app: lab-numbers-web
+      version: v1
+  template:
+    metadata:
+      labels:
+        app: lab-numbers-web
+        version: v1
+    spec:
+      containers:
+        - name: web
+          image: kiamol/ch03-numbers-web
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: lab-numbers-web-v2
+spec:
+  selector:
+    matchLabels:
+      app: lab-numbers-web
+      version: v2
+  template:
+    metadata:
+      labels:
+        app: lab-numbers-web
+        version: v2
+    spec:
+      containers:
+        - name: web
+          image: kiamol/ch03-numbers-web:v2

learn/learn-kubernetes-master/kiamol/ch03/lab/solution/services.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-api
+spec:
+  ports:
+    - port: 80
+  selector:
+    app: lab-numbers-api
+    version: v1
+  type: ClusterIP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-web
+spec:
+  ports:
+    - port: 8088
+      targetPort: 80
+  selector:
+    app: lab-numbers-web
+    version: v2
+  type: LoadBalancer