service discovery

deployment/helloworld-secrets.yml

@@ -4,5 +4,5 @@ metadata:
   name: db-secrets
 type: Opaque
 data:
-  password: cm9vdA==
-  username: cGFzc3dvcmQ=
+  username: cm9vdA==
+  password: cGFzc3dvcmQ=

service-discovery/database-service.yml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: database-service
+spec:
+  ports:
+  - port: 3306
+    protocol: TCP
+  selector:
+    app: database
+  type: NodePort

service-discovery/database.yml

@@ -0,0 +1,34 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: database
+  labels:
+    app: database
+spec:
+  containers:
+  - name: mysql
+    image: mysql:5.7
+    ports:
+    - name: mysql-port
+      containerPort: 3306
+    env:
+      - name: MYSQL_ROOT_PASSWORD
+        valueFrom:
+          secretKeyRef:
+            name: helloworld-secrets
+            key: rootPassword
+      - name: MYSQL_USER
+        valueFrom:
+          secretKeyRef:
+            name: helloworld-secrets
+            key: username
+      - name: MYSQL_PASSWORD
+        valueFrom:
+          secretKeyRef:
+            name: helloworld-secrets
+            key: password
+      - name: MYSQL_DATABASE
+        valueFrom:
+          secretKeyRef:
+            name: helloworld-secrets
+            key: database

service-discovery/helloworld-db-service.yml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: helloworld-db-service
+spec:
+  ports:
+  - port: 3000
+    protocol: TCP
+  selector:
+    app: helloworld-db
+  type: NodePort

service-discovery/helloworld-db.yml

@@ -0,0 +1,33 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: helloworld-deployment
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        app: helloworld-db
+    spec:
+      containers:
+      - name: k8s-demo
+        image: wardviaene/k8s-demo
+        command: ["node", "index-db.js"]
+        ports:
+        - name: nodejs-port
+          containerPort: 3000
+        env:
+          - name: MYSQL_HOST
+            value: database-service
+          - name: MYSQL_USER
+            value: root
+          - name: MYSQL_PASSWORD
+            valueFrom:
+              secretKeyRef:
+                name: helloworld-secrets
+                key: rootPassword
+          - name: MYSQL_DATABASE
+            valueFrom:
+              secretKeyRef:
+                name: helloworld-secrets
+                key: database

service-discovery/secrets.yml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: helloworld-secrets
+type: Opaque
+data:
+  username: aGVsbG93b3JsZA==
+  password: cGFzc3dvcmQ=
+  rootPassword: cm9vdHBhc3N3b3Jk
+  database: aGVsbG93b3JsZA==