init

.dockerignore

@@ -0,0 +1,13 @@
+node_modules
+npm-debug.log
+Dockerfile*
+docker-compose*
+.dockerignore
+.git
+.gitignore
+.env
+*/bin
+*/obj
+README.md
+LICENSE
+.vscode

.gitignore

@@ -0,0 +1,5 @@
+node_modules
+temp
+k8s-archive
+dump.rdb
+package-lock.json

.travis.yml

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+sudo: required
+services:
+  - docker
+before_install:
+  - openssl aes-256-cbc -K $encrypted_0c35eebf403c_key -iv $encrypted_0c35eebf403c_key
+  - curl https://sdk.cloud.google.com | bash > /dev/null;
+  - source $HOME/google-cloud-sdk/path.bash.inc
+  - gcloud components update kubectl
+  - gcloud auth activate-service-account --key-file service-accounts.json
+  - gcloud config set project skilful-berm-214882
+  - gcloud container clusters get-credentials multi-cluster
+  - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin

Dockerfile

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+FROM node:6.14.2
+COPY package.json .
+RUN npm install
+COPY keys.js .
+COPY server.js .
+CMD node server.js
+EXPOSE 8086

Dockerfile.redis

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+FROM redis:alpine
+EXPOSE 6379
+CMD ["redis-server"]

docker-compose.yml

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+version: '3'
+services:
+  nodeapp:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "8082:8082"
+  redisdb:
+    build:
+      context: .
+      dockerfile: Dockerfile.redis
+    restart: always
+    ports:
+      - 6379:6379

k8s/aws-nginx-ingress-layer7.yml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: ingress-nginx
+  namespace: ingress-nginx
+  labels:
+    app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
+  annotations:
+    # replace with the correct value of the generated certificate in the AWS console
+    service.beta.kubernetes.io/aws-load-balancer-ssl-cert: "arn:aws:acm:us-west-2:XXXXXXXX:certificate/XXXXXX-XXXXXXX-XXXXXXX-XXXXXXXX"
+    # the backend instances are HTTP
+    service.beta.kubernetes.io/aws-load-balancer-backend-protocol: "http"
+    # Map port 443
+    service.beta.kubernetes.io/aws-load-balancer-ssl-ports: "https"
+    # Ensure the ELB idle timeout is less than nginx keep-alive timeout. By default,
+    # NGINX keep-alive is set to 75s. If using WebSockets, the value will need to be
+    # increased to '3600' to avoid any potential issues.
+    service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: "60"
+spec:
+  type: LoadBalancer
+  selector:
+    app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
+  ports:
+    - name: http
+      port: 80
+      targetPort: http
+    - name: https
+      port: 443
+      targetPort: http
+
+---

k8s/local-ingress-service.yaml

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+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: ingress-service
+  annotations:
+    kubernetes.io/ingress.class: nginx
+    nginx.ingress.kubernetes.io/rewrite-target: /
+spec:
+  rules:
+    - http:
+        paths:
+          - path: /
+            backend:
+              serviceName: node-server-clusterip-service
+              servicePort: 8086

k8s/node-server-cluseterip-service.yaml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: node-server-clusterip-service
+spec:
+  type: ClusterIP
+  selector:
+    component: node-server
+  ports:
+  - port: 8086
+    targetPort: 8086
+

k8s/node-server-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: node-server-deployment
+spec:
+  selector:
+    matchLabels:
+      component: node-server
+  template:
+    metadata:
+      labels:
+        component: node-server
+    spec:
+      containers:
+      - name: node-server-deployment
+        image: aishwarydhare/hellonode:4
+        ports:
+        - containerPort: 8086
+        env:
+          - name: REDIS_HOST
+            value: redis-clusterip-service
+          - name: REDIS_PORT
+            value: '6379'

k8s/redis-server-clusterip-service.yaml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: redis-clusterip-service
+spec:
+  selector:
+    component: redis-server
+  ports:
+  - port: 6379
+    targetPort: 6379

k8s/redis-server-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: redis-server-deployment
+spec:
+  selector:
+    matchLabels:
+      component: redis-server
+  template:
+    metadata:
+      labels:
+        component: redis-server
+    spec:
+      containers:
+      - name: redis-server-deployment
+        image: aishwarydhare/helloredis
+        ports:
+        - containerPort: 6379

keys.js

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+module.exports = {
+    redisHost: process.env.REDIS_HOST,
+    redisPort: process.env.REDIS_PORT 
+}

package.json

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+{
+  "name": "hellonode",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "redis": "~2.8.0"
+  },
+  "scripts": {
+    "start": "node server.js"
+  }
+}

server.js

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+const http = require('http');
+const keys = require('./keys');
+const redis = require('redis');
+// const client = redis.createClient(); // this creates a new client
+const client = redis.createClient(
+    keys.redisPort, 
+    keys.redisHost
+  );
+
+isRedisConnected = false;
+
+var handleRequest = function(request, response) {
+  console.log('Received request for URL: ' + request.url);
+  response.writeHead(200);
+
+  client.get('mkey', function (error, result) {
+    if (error) {
+        console.log(error);
+        throw error;
+        isRedisConnected = false;
+    }
+    console.log('REDIS GET result ->' + result);
+  });
+
+  var str = "REDIS IS ALSO CONNECTED."
+  if(!isRedisConnected){
+    str = "REDIS NOT CONNECTED.";
+  }
+  response.end('Hello World! This is Node running on Kubernetes.\n\n' + str);
+};
+var www = http.createServer(handleRequest);
+www.listen(8086);
+
+client.on('connect', function() {
+  console.log('Redis client connected');
+  isRedisConnected = true;
+  client.set('mkey', 'my_test_value', redis.print);
+});
+
+client.on('error', function (err) {
+  console.log('Something went wrong ' + err);
+});