├── .gitignore
├── Dockerfile
├── k8s
    ├── service.yml
    ├── hpa.yml
    └── deployment.yml
├── README.md
├── index.js
└── package.json


/.gitignore:
--------------------------------------------------------------------------------
1 | node_modules
2 | .idea


--------------------------------------------------------------------------------
/Dockerfile:
--------------------------------------------------------------------------------
 1 | FROM node:alpine
 2 | 
 3 | RUN mkdir -p /usr/src/app
 4 | 
 5 | WORKDIR /usr/src/app
 6 | 
 7 | ADD index.js ./
 8 | 
 9 | ADD package.json ./
10 | 
11 | RUN npm install
12 | 
13 | CMD ["npm", "start"]


--------------------------------------------------------------------------------
/k8s/service.yml:
--------------------------------------------------------------------------------
 1 | apiVersion: v1
 2 | kind: Service
 3 | metadata:
 4 |   name: node-example
 5 |   labels:
 6 |     app: node-example
 7 | spec:
 8 |   selector:
 9 |     app: node-example
10 |   ports:
11 |   - port: 3000
12 |     protocol: TCP
13 |     nodePort: 30001
14 |   type: LoadBalancer


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | Node.js application for tutorial series
2 | 
3 | Part-1 => https://blog.kloia.com/deploy-auto-scalable-node-js-application-on-kubernetes-cluster-part-1-f40e622f2337
4 | 
5 | Part-2 => https://blog.kloia.com/deploy-auto-scalable-node-js-application-on-kubernetes-cluster-part-2-d41164d72dcb
6 | 


--------------------------------------------------------------------------------
/index.js:
--------------------------------------------------------------------------------
 1 | const http = require('http');
 2 | 
 3 | const port = process.env.PORT || 3000;
 4 | 
 5 | const server = http.createServer((req, res) => {
 6 |     res.statusCode = 200;
 7 | res.setHeader('Content-Type', 'text/plain');
 8 | res.end('Hello World\n');
 9 | });
10 | 
11 | server.listen(port, () => {
12 |     console.log(`Server running on port: ${port}`);
13 | });


--------------------------------------------------------------------------------
/k8s/hpa.yml:
--------------------------------------------------------------------------------
 1 | apiVersion: autoscaling/v1
 2 | kind: HorizontalPodAutoscaler
 3 | metadata:
 4 |   annotations:
 5 |   name: node-example
 6 |   namespace: default
 7 | spec:
 8 |   maxReplicas: 5
 9 |   minReplicas: 1
10 |   scaleTargetRef:
11 |     apiVersion: extensions/v1
12 |     kind: Deployment
13 |     name: node-example
14 |   targetCPUUtilizationPercentage: 1
15 | 


--------------------------------------------------------------------------------
/k8s/deployment.yml:
--------------------------------------------------------------------------------
 1 | apiVersion: extensions/v1beta1
 2 | kind: Deployment
 3 | metadata:
 4 |   name: node-example
 5 | spec:
 6 |   replicas: 1
 7 |   template:
 8 |     metadata:
 9 |       labels:
10 |         app: node-example
11 |     spec:
12 |       containers:
13 |       - name: node-example
14 |         image: huseyinbabal/node-example
15 |         imagePullPolicy: Always
16 |         ports:
17 |         - containerPort: 3000
18 |         resources:
19 |             limits:
20 |               cpu: "0.5"
21 |             requests:
22 |               cpu: "0.25"
23 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "kubernetes-node-example",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "start": "node index.js"
 8 |   },
 9 |   "repository": {
10 |     "type": "git",
11 |     "url": "git+https://github.com/huseyinbabal/kubernetes-node-example.git"
12 |   },
13 |   "author": "",
14 |   "license": "ISC",
15 |   "bugs": {
16 |     "url": "https://github.com/huseyinbabal/kubernetes-node-example/issues"
17 |   },
18 |   "homepage": "https://github.com/huseyinbabal/kubernetes-node-example#readme"
19 | }
20 | 


--------------------------------------------------------------------------------