Workshop DevOps

• API with Go
• Docker
  • Build image with multi-stage build
  • Best practices for writing Dockerfiles
• Docker compose
• CI/CD with Jenkins
• Static Code Analysis
  • SonarQube
  • Sonar Scanner

sonar-scanner.properties

sonar.host.url=http://128.199.199.84:9000
sonar.login=xxx
sonar.password=xxx

Step 0 :: Preparaion

$git clone https://github.com/up1/workshop-devops-go.git
cd workshop-devops-go

Step 1 :: Build and Run API with Docker

Working with Docker command

$cd api
$docker image build -t somkiat/demo-api .
$docker container run -d --name api -p 8000:1323 somkiat/demo-api
$docker container ps

Working with Docker compose

$docker-compose build
$docker-compose up -d
$docker-compose ps
$docker-compose logs --follow

Deploy with shell script

$sh deploy.sh
$docker-compose ps
$docker-compose logs --follow

URL for testing

• http://localhost:8000/accounts/1
• http://localhost:8000/accounts/2
• http://localhost:8000/accounts/3

Step 2 :: Design build pipeline with Jenkins

• working with free style job
• working with Jenkinsfile (Pipeline as a Code)

Design youe pipeline

• Pull code
• Build
• Testing
• Build Docker image
• Push Docker image to Registry server
• Deploy to target server
  • Docker
  • Kubernetes cluster

List of Jenkins's plugins

• Publish Over SSH
• Kubernetes Continuous Deploy Plugin 1.0.0

Step 3 :: Deploy with docker swarm

Create Docker Swarm

$docker swarm init
$docker node ls

See join-token command

$docker swarm join-token worker
$docker swarm join-token manager

Deploy stack with docker-compose file (v3+)

$docker stack deploy --compose-file docker-compose-deploy.yml demostack
$docker stack services demostack

Scaling service

docker service ls
$docker service scale <service name>=<number of replica(s)>
$docker service ls
$docker service ps <service name>

Example scale to 5

$docker service scale demostack_api=5

demostack_api scaled to 5 overall progress: 5 out of 5 tasks 1/5: running [==================================================>] 2/5: running [==================================================>] 3/5: running [==================================================>] 4/5: running [==================================================>] 5/5: running [==================================================>] verify: Service converged

Testing with curl and see result

$curl http://localhost:8000/

Delete services

$docker service rm <service name>

Delete stack

$docker stack rm demostack

Leave node from Swarm

$docker swarm leave --force

Step 4 :: Deploy with Kubernetes

$kubectl get node
$kubectl apply -f k8s/
$kubectl get all