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

learn/learn-kubernetes-master/kiamol/ch05/todo-list/persistentVolume-nfs.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: pv01
+spec:
+  capacity:
+    storage: 50Mi
+  accessModes:
+    - ReadWriteOnce
+  nfs:
+    server: nfs.my.network
+    path: "/kubernetes-volumes"

learn/learn-kubernetes-master/kiamol/ch05/todo-list/persistentVolume.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: pv01
+spec:
+  capacity:
+    storage: 50Mi
+  accessModes:
+    - ReadWriteOnce
+  local:
+    path: /volumes/pv01 
+  nodeAffinity:
+    required:
+      nodeSelectorTerms:
+        - matchExpressions:
+          - key: kiamol
+            operator: In
+            values:
+              - ch05

learn/learn-kubernetes-master/kiamol/ch05/todo-list/postgres-persistentVolumeClaim-dynamic.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc-dynamic
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 100Mi

learn/learn-kubernetes-master/kiamol/ch05/todo-list/postgres-persistentVolumeClaim-too-big.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc-toobig
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 100Mi
+  storageClassName: ""

learn/learn-kubernetes-master/kiamol/ch05/todo-list/postgres-persistentVolumeClaim.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 40Mi
+  storageClassName: ""

learn/learn-kubernetes-master/kiamol/ch05/todo-list/postgres/todo-db-secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: todo-db-secret
+type: Opaque
+stringData:
+  POSTGRES_PASSWORD: "kiamol-2*2*"

learn/learn-kubernetes-master/kiamol/ch05/todo-list/postgres/todo-db.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: todo-db
+spec:
+  ports:
+    - port: 5432
+      targetPort: 5432
+  selector:
+    app: todo-db
+  type: ClusterIP
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-db
+spec:
+  selector:
+    matchLabels:
+      app: todo-db
+  template:
+    metadata:
+      labels:
+        app: todo-db
+    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
+      volumes:
+        - name: secret
+          secret:
+            secretName: todo-db-secret
+            defaultMode: 0400
+            items:
+            - key: POSTGRES_PASSWORD
+              path: postgres_password
+        - name: data
+          persistentVolumeClaim:
+            claimName: postgres-pvc

learn/learn-kubernetes-master/kiamol/ch05/todo-list/web/todo-web-configMap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: todo-web-config
+data:
+  config.json: |-
+    {
+      "ConfigController": {
+        "Enabled" : true
+      },
+      "Database" : {
+        "Provider" : "Postgres"
+      }
+    }

learn/learn-kubernetes-master/kiamol/ch05/todo-list/web/todo-web-secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: todo-web-secret
+type: Opaque
+stringData:
+  secrets.json: |-
+    {
+      "ConnectionStrings": {
+        "ToDoDb": "Server=todo-db;Database=todo;User Id=postgres;Password=kiamol-2*2*;"
+      }
+    }

learn/learn-kubernetes-master/kiamol/ch05/todo-list/web/todo-web.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: todo-web
+spec:
+  ports:
+    - port: 8081
+      targetPort: 80
+  selector:
+    app: todo-web
+  type: LoadBalancer
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-web
+spec:
+  selector:
+    matchLabels:
+      app: todo-web
+  template:
+    metadata:
+      labels:
+        app: todo-web
+    spec:
+      containers:
+        - name: web
+          image: kiamol/ch04-todo-list
+          env:
+          - name: ASPNETCORE_ENVIRONMENT
+            value: Test
+          volumeMounts:
+            - name: config
+              mountPath: "/app/config"
+              readOnly: true
+            - name: secret
+              mountPath: "/app/secrets"
+              readOnly: true
+      volumes:
+        - name: config
+          configMap:
+            name: todo-web-config
+            items:
+            - key: config.json
+              path: config.json
+        - name: secret
+          secret:
+            secretName: todo-web-secret
+            defaultMode: 0400
+            items:
+            - key: secrets.json
+              path: secrets.json