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Add tutorial
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‎app.js

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@@ -7,7 +7,8 @@ var bodyParser = require('body-parser');
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var index = require('./routes/index');
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var users = require('./routes/users');
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var names = require('./routes/names')
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var names = require('./routes/names');
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var tutorial = require('./routes/tutorial')
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var app = express();
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app.use('/', index);
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app.use('/users', users);
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app.use('/names', names)
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app.use('/names', names);
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app.use('/tutorial', tutorial)
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// catch 404 and forward to error handler
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app.use(function(req, res, next) {

‎routes/tutorial.js

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var express = require('express');
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var router = express.Router();
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/* GET home page. */
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router.get('/', function(req, res, next) {
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res.render('tutorial', { title: 'DevOps Test tutorial'});
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});
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module.exports = router;

‎views/index.hbs

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<!-- Begin page content -->
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<div class="container">
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<div class="page-header">
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<h1>DevOps Test App for Integritas</h1>
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<h1>DevOps Test App for Integritas </h1>
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</div>
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<p class="lead">This App is running on AWS / kubernates.</p>
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<p class="lead">This App is running on AWS / kubernates. Click on <a href="/tutorial">Tutorial</a> To see how it was deployed.</p>
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<p><strong>Author:</strong> Gabriel Paschoal Vicente - <a href="mailto:[email protected]" target="_top">Send Mail</a></p>
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<p>Use the button below to access the app.</p>
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<a class="btn btn-default" href="/names" role="button">Access</a>
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<br>
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</div>
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</div>

‎views/names.hbs

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<!-- Begin page content -->
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<div class="container">
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<div class="page-header">
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<h1>DevOps Test App for Integritas - CRUD App </h1>
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<h3>DevOps Test App for Integritas - CRUD Application <a style="float: right" href="/">Back</a> </h3>
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</div>
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<div class="row">
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<div class="col-xs-6"><p class="lead">Type one name and click on Add</p></div>
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<div class="col-xs-6"><a href="/">Click here</a> to go back</div>
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</div>
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<form action="/names" method="post" class="form-inline">

‎views/tutorial.hbs

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<!-- Begin page content -->
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<div class="container">
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<h3>This is how the application was deployed using kubernates on aws.<a style="float: right" href="/">back</a></h3>
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<p>The github repository of the simple application I developed.</p>
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<div class="well"><a href="https://github.com/gabrielpasv/gab-node-app" target="_blank">https://github.com/gabrielpasv/gab-node-app</a></div>
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<p>I created a docker image and uploaded it to docker hub. I used to following Dockerfile:</p>
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<div class="well">FROM node:boron <br>
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# Create app directory <br>
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WORKDIR /gab-node-app <br>
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# Clone repo <br>
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RUN git clone https://github.com/gabrielpasv/gab-node-app.git . <br>
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# Install Dependencies <br>
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RUN npm install <br>
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EXPOSE 80 <br>
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CMD [ "npm", "start" ] <br>
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</div>
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<p>To build the image and upload it to docker hub I used these commands:</p>
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<div class="well">docker build -t gabrielpasv/gab-node-app .<br>
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docker push gabrielpasv/gab-node-app
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</div>
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<p>Setting up the environment installing <strong>kops, kubectl, awscli</strong>. And generate keys with <strong>ssh-keygen</strong>.</p>
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<p>Create a DNS domain name on aws: <strong> k8s.gabrielpasv.net</strong></p>
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<div class="well">aws route53 create-hosted-zone --name k8s.gabrielpasv.net --caller-reference 5</div>
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<p>Create the aws cluster with kops</p>
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<div class="well">kops create cluster --name=k8s.gabrielpasv.net --state=s3://k8s-gabrielpasv-state --zones=us-east-1a --node-count=2 --node-size=t2.micro --master-size=t2.micro --dns-zone=k8s.gabrielpasv.net</div>
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<p>I Validate the cluster is ready</p>
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<div class="well">ubuntu@ip-172-31-17-121:~$ kops validate cluster --state=s3://k8s-gabrielpasv-state <br>
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Using cluster from kubectl context: k8s.gabrielpasv.net <br>
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<br>
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Validating cluster k8s.gabrielpasv.net <br>
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<br>
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INSTANCE GROUPS <br>
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NAME ROLE MACHINETYPE MIN MAX SUBNETS <br>
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master-us-east-1a Master t2.micro 1 1 us-east-1a <br>
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nodes Node t2.micro 2 2 us-east-1a <br>
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<br>
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NODE STATUS <br>
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NAME ROLE READY <br>
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ip-172-20-34-7.ec2.internal master True <br>
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ip-172-20-35-253.ec2.internal node True <br>
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ip-172-20-38-120.ec2.internal node True <br>
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<br>
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Your cluster k8s.gabrielpasv.net is ready <br>
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</div>
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<p>I created the deployment with 1 replica for the mysql and 2 for the application with load balance and I also used secrets to pass the credentials. I used these files <strong>storage.yml, pv-claim.yml, gabnodeapp-secrets.yml, gabnodeapp-db.yml, gabnodeapp-db-service.yml, gabnodeapp-web.yml, gabnodeapp-web-service.yml
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</strong> </p>
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<p>Check the content of each file</p>
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<p> <strong>storage.yml</strong> </p>
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<div class="well">kind: StorageClass <br>
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apiVersion: storage.k8s.io/v1 <br>
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metadata: <br>
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&nbsp name: standard <br>
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provisioner: kubernetes.io/aws-ebs <br>
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parameters: <br>
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&nbsp type: gp2 <br>
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&nbsp zone: us-east-1a <br>
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</div>
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<p> <strong>pv-claim.yml</strong> </p>
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<div class="well">kind: PersistentVolumeClaim <br>
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apiVersion: v1 <br>
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metadata: <br>
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&nbsp name: db-storage <br>
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&nbsp annotations: <br>
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&nbsp volume.beta.kubernetes.io/storage-class: "standard" <br>
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spec: <br>
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&nbsp accessModes: <br>
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&nbsp - ReadWriteOnce <br>
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&nbsp resources: <br>
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&nbsp requests: <br>
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&nbsp &nbsp storage: 8Gi</div> <br>
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<p> <strong>gabnodeapp-secrets.yml</strong> </p>
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<div class="well">apiVersion: v1 <br>
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kind: Secret <br>
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metadata: <br>
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&nbsp name: gabnodeapp-secrets <br>
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type: Opaque <br>
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data: <br>
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&nbsp gab-password: Z2FiMTIzNA== <br>
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&nbsp root-password: cG9ydGFsMTIzNA== <br>
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</div>
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<p> <strong>gabnodeapp-db.yml</strong> </p>
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<div class="well">apiVersion: v1 <br>
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kind: ReplicationController <br>
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metadata: <br>
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&nbsp name: gabnodeapp-db <br>
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spec: <br>
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&nbsp replicas: 1 <br>
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&nbsp selector: <br>
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&nbsp &nbsp app: gabnodeapp-db <br>
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&nbsp template: <br>
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&nbsp &nbsp metadata: <br>
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&nbsp &nbsp &nbsp name: gabnodeapp-db <br>
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&nbsp &nbsp &nbsp labels: <br>
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&nbsp &nbsp &nbsp &nbsp app: gabnodeapp-db <br>
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&nbsp &nbsp spec: <br>
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&nbsp &nbsp &nbsp containers: <br>
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&nbsp &nbsp &nbsp &nbsp - name: mysql <br>
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&nbsp &nbsp &nbsp &nbsp image: mysql:5.7 <br>
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&nbsp &nbsp &nbsp &nbsp args: <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp - "--ignore-db-dir=lost+found" <br>
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&nbsp &nbsp&nbsp &nbsp ports: <br>
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&nbsp &nbsp &nbsp &nbsp - name: mysql-port <br>
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&nbsp &nbsp&nbsp &nbsp &nbsp containerPort: 3306 <br>
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&nbsp &nbsp&nbsp &nbsp env: <br>
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&nbsp &nbsp&nbsp &nbsp &nbsp - name: MYSQL_ROOT_PASSWORD <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp valueFrom: <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp secretKeyRef: <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp&nbsp name: gabnodeapp-secrets <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp key: root-password <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp - name: MYSQL_DATABASE <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp value: gabdb <br>
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&nbsp &nbsp&nbsp &nbsp &nbsp - name: MYSQL_USER <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp value: gab <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp - name: MYSQL_PASSWORD <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp valueFrom: <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp secretKeyRef: <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp name: gabnodeapp-secrets <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp key: gab-password <br>
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&nbsp &nbsp&nbsp &nbsp volumeMounts: <br>
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&nbsp &nbsp &nbsp &nbsp - mountPath: "/var/lib/mysql" <br>
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&nbsp &nbsp&nbsp&nbsp &nbsp name: gabnodeapp-storage <br>
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&nbsp &nbsp&nbsp volumes: <br>
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&nbsp &nbsp &nbsp &nbsp - name: gabnodeapp-storage <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp persistentVolumeClaim: <br>
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&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp claimName: db-storage <br>
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</div>
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<p> <strong>gabnodeapp-db-service.yml</strong> </p>
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<div class="well">apiVersion: v1<br>
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kind: Service<br>
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metadata:<br>
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&nbsp name: gabnodeapp-db<br>
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spec:<br>
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&nbsp ports:<br>
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&nbsp - port: 3306<br>
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&nbsp &nbsp protocol: TCP<br>
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&nbsp selector:<br>
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&nbsp&nbsp app: gabnodeapp-db <br>
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type: NodePort<br>
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</div>
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<p> <strong>gabnodeapp-web.yml</strong> </p>
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<div class="well">apiVersion: extensions/v1beta1 <br>
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kind: Deployment <br>
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metadata: <br>
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&nbsp name: gabnodeapp-deployment <br>
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spec: <br>
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&nbsp replicas: 2 <br>
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&nbsp template: <br>
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&nbsp &nbsp metadata: <br>
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&nbsp&nbsp&nbsp labels: <br>
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&nbsp&nbsp&nbsp&nbsp app: gabnodeapp <br>
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&nbsp&nbsp spec: <br>
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&nbsp&nbsp&nbsp containers: <br>
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&nbsp&nbsp&nbsp - name: gab-node-app <br>
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&nbsp&nbsp&nbsp&nbsp image: gabrielpasv/gab-node-app <br>
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&nbsp&nbsp&nbsp&nbsp ports: <br>
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&nbsp&nbsp&nbsp&nbsp - name: http-port <br>
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&nbsp&nbsp&nbsp&nbsp&nbsp containerPort: 80 <br>
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&nbsp&nbsp&nbsp&nbsp env: <br>
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&nbsp&nbsp&nbsp&nbsp - name: MYSQL_USER <br>
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&nbsp&nbsp&nbsp&nbsp value: gab <br>
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&nbsp&nbsp&nbsp&nbsp - name: MYSQL_PASSWORD <br>
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&nbsp&nbsp&nbsp&nbsp value: gab1234 <br>
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&nbsp&nbsp&nbsp&nbsp - name: MYSQL_DATABASE <br>
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&nbsp&nbsp&nbsp&nbsp value: gabdb <br>
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&nbsp&nbsp&nbsp&nbsp - name: APP_DB_HOST <br>
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&nbsp&nbsp&nbsp&nbsp value: gabnodeapp-db</div>
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<p> <strong>gabnodeapp-web-service.yml</strong> </p>
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<div class="well">apiVersion: v1 <br>
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kind: Service <br>
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metadata: <br>
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&nbsp name: gabnodeapp <br>
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spec: <br>
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&nbsp ports: <br>
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&nbsp - port: 80 <br>
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&nbsp&nbsp targetPort: http-port <br>
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&nbsp&nbsp protocol: TCP <br>
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&nbsp selector: <br>
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&nbsp&nbsp app: gabnodeapp <br>
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&nbsp type: LoadBalancer</div>
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<p>Check running pods</p>
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<div class="well">ubuntu@ip-172-31-17-121:~$ kubectl get pods <br>
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NAME READY STATUS RESTARTS AGE <br>
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gabnodeapp-db-q97j4 1/1 Running 0 7h <br>
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gabnodeapp-deployment-1899699146-4g37c 1/1 Running 0 5h <br>
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gabnodeapp-deployment-1899699146-dtxz1 1/1 Running 0 5h <br>
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</div>
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<p>Check deployment</p>
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<div class="well">ubuntu@ip-172-31-17-121:~$ kubectl get deployments<br>
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NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE<br>
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gabnodeapp-deployment &nbsp&nbsp 2 &nbsp&nbsp 2 &nbsp&nbsp 2 &nbsp&nbsp 2 &nbsp&nbsp 5h<br>
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</div>
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<p>It generates a ELB link</p>
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<div class="well">ac7b01a9fb1f311e798aa021c568ee01-417161783.us-east-1.elb.amazonaws.com</div>
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<p>And I created a domain for that</p>
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<div class="well"> <a href="http://gab-node-app.k8s.gabrielpasv.net/">http://gab-node-app.k8s.gabrielpasv.net/</a> </div>
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</div>
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</div>

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