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

learn/learn-kubernetes-master/kiamol/ch06/lab/README.md

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+# Ch06 lab
+
+Run the app:
+
+```
+kubectl apply -f lab/numbers/
+```
+
+Get the URL to browse to:
+
+```
+kubectl get svc numbers-web -o jsonpath='http://{.status.loadBalancer.ingress[0].*}:8086'
+```
+
+> Browse and try to get a random number, the app fails.
+
+## Sample Solution
+
+Add the RNG label to a node:
+
+```
+kubectl label node $(kubectl get nodes -o jsonpath='{.items[0].metadata.name}') rng=hw
+```
+
+Deploy the new resources - a [Deployment](solution/web-deployment.yaml) for the web app and a [DaemonSet](solution/api-daemonset.yaml) for the API:
+
+```
+kubectl apply -f lab/solution/
+```
+
+> Refresh the browser and confirm you can get a random number.
+
+Delete the old resources by their labels:
+
+```
+kubectl get all -l kiamol=ch06-lab
+
+kubectl delete all -l kiamol=ch06-lab
+```

learn/learn-kubernetes-master/kiamol/ch06/lab/numbers/api-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch06-lab
+spec:
+  ports:
+    - port: 80
+  selector:
+    app: numbers-api
+  type: ClusterIP

learn/learn-kubernetes-master/kiamol/ch06/lab/numbers/api.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch06-lab
+spec:
+  containers:
+    - name: api
+      image: kiamol/ch03-numbers-api

learn/learn-kubernetes-master/kiamol/ch06/lab/numbers/web-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: numbers-web
+  labels:
+    kiamol: ch06-lab
+spec:
+  ports:
+    - port: 8086
+      targetPort: 80
+  selector:
+    app: numbers-web
+  type: LoadBalancer

learn/learn-kubernetes-master/kiamol/ch06/lab/numbers/web.yaml

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+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: numbers-web
+  labels:
+    kiamol: ch06-lab
+spec:
+  replicas: 2
+  selector:    
+    app: numbers-web
+  template:
+    metadata:
+      labels:
+        app: numbers-web
+    spec:
+      containers:
+        - name: web
+          image: kiamol/ch03-numbers-web

learn/learn-kubernetes-master/kiamol/ch06/lab/solution/api-daemonset.yaml

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+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: numbers-api
+  labels:
+    kiamol: ch06-lab
+spec:
+  selector:
+    matchLabels:
+      app: numbers-api
+  template:
+    metadata:
+      labels:
+        app: numbers-api
+    spec:
+      containers:
+        - name: api
+          image: kiamol/ch03-numbers-api
+      nodeSelector:
+        rng: hw

learn/learn-kubernetes-master/kiamol/ch06/lab/solution/web-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: numbers-web
+  labels:
+    kiamol: ch06-lab
+spec:
+  replicas: 2
+  selector:    
+    matchLabels:
+      app: numbers-web
+  template:
+    metadata:
+      labels:
+        app: numbers-web
+    spec:
+      containers:
+        - name: web
+          image: kiamol/ch03-numbers-web