Grafana : Docker-compose를 이용한 설치

• 설치 명령어 참고

mkdir -p grafana/data grafana/config
touch grafana/config/grafana.ini
vi docker-compose.yml
docker-compose up –d
docker-compose logs
docker ps (또는 docker-compose ps 로 실행된 컨테이너 확인)
ss –nltp (실행된 프로세스 포트 확인)

• 접속 확인
  예 : http://[target ip]:3000/
  초기 ID/PW : admin/admin

샘플 앱 연동 (Spring boot 기반)

• docker-compose.yml에 추가

java:
    image: joypark9/o11y-sample-app:latest
    container_name: sample-app
    user: "root"
    ports:
      - 8888:8888
    restart: always
    network_mode: host

• prometheus.yml에 추가

- job_name: 'sample_app'
    metrics_path: '/actuator/prometheus'
    static_configs:
    - targets: ['localhost:8888']

• 실행

docker-compose up –d

• 지표 확인
  예 : http://[target ip]:8888/actuator/prometheus

• Grafana.com 제공되는 JVM 대시보드 추가
  https://grafana.com/grafana/dashboards/4701
  대시보드 ID : 4701

• Spring boot application 설정 참고

# Dependency 추가 (build.gradle)
dependencies {
  implementation 'org.springframework.boot:spring-boot-starter-web'
  implementation 'org.springframework.boot:spring-boot-starter-actuator'
  implementation 'io.micrometer:micrometer-registry-prometheus'
  }

# prometheus endpoint 노출 (application.yml)

management:
  endpoints:
    web:
      exposure:
        include: "prometheus"