DevOps Classroom notes 01/Aug/2026

workflows

docker:

• steps:
  • checkout
  • build code
  • scan repo – sonar scan
  • docker scan
  • publish image

setup sonarqube

1. install docker curl -fsSL https://get.docker.com -o install-docker.sh && sh install-docker.sh

   sudo sysctl -w vm.max_map_count=524288 && sudo sysctl -w fs.file-max=131072
   

2. create dir

   1. mkdir -p /opt/sonarqube/data
   2. mkdir -p /opt/sonarqube/extensions
   3. mkdir -p /opt/sonarqube/logs

3. create docker-compose.yaml

version: "3.8"

services:
  sonarqube:
    image: sonarqube:community
    container_name: sonarqube
    depends_on:
      - db
    ports:
      - "9000:9000"
    networks:
      - sonarnet
    environment:
      - SONAR_JDBC_URL=jdbc:postgresql://db:5432/sonar
      - SONAR_JDBC_USERNAME=sonar
      - SONAR_JDBC_PASSWORD=sonar_secure_pass
    volumes:
      - sonarqube_data:/opt/sonarqube/data
      - sonarqube_extensions:/opt/sonarqube/extensions
      - sonarqube_logs:/opt/sonarqube/logs

  db:
    image: postgres:15
    container_name: postgres_db
    networks:
      - sonarnet
    environment:
      - POSTGRES_USER=sonar
      - POSTGRES_PASSWORD=sonar_secure_pass
      - POSTGRES_DB=sonar
    volumes:
      - postgres_data:/var/lib/postgresql/data

networks:
  sonarnet:

volumes:
  sonarqube_data:
  sonarqube_extensions:
  sonarqube_logs:
  postgres_data:

<image_name> == sonarqube (https://hub.docker.com/_/sonarqube)

4. docker compose up -d && docker ps

5. connect from broswer http://<ipaddress&gt;:9000

install sonar-scanner & run below command

sonar-scanner \
  -Dsonar.projectKey=spring-petclinic \
  -Dsonar.sources=. \
  -Dsonar.host.url=http://34.202.229.72:9000 \
  -Dsonar.token=sqp_64327abf992997004dde4c8236f1250f019be980

watch class recording and cofigure