cloud-devops-lab/docker-compose.yml at main · janice-aliten/cloud-devops-lab · GitHub

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# cloud-devops-lab — local three-service monitoring stack
#
# Services:
#   app        — FastAPI health and metrics service (host port 8000, container port 8000)
#   prometheus — metrics scraping (host port 9090, container port 9090)
#   grafana    — dashboard visualisation (host port 3001, container port 3000)
#
# Usage:
#   docker compose up --build
#   docker compose down
#
# Access:
#   App health:  http://localhost:8000/health
#   App ready:   http://localhost:8000/ready
#   App metrics: http://localhost:8000/metrics
#   Prometheus:  http://localhost:9090
#   Grafana:     http://localhost:3001  (lab-admin / local-lab-password)
#
# Notes:
#   Grafana credentials below are local lab defaults only.
#   Override them in .env for any non-local use.
#   Do not reuse these values in production.

services:
  app:
    build: .
    container_name: devops-lab-app
    ports:
      - "${APP_PORT:-8000}:8000"
    environment:
      - APP_ENV=${APP_ENV:-development}
      - APP_LOG_LEVEL=${APP_LOG_LEVEL:-info}
    restart: unless-stopped
    healthcheck:
      test:
        [
          "CMD",
          "python",
          "-c",
          "import urllib.request; urllib.request.urlopen('http://localhost:8000/health', timeout=3)"
        ]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 5s

  prometheus:
    image: prom/prometheus:v2.52.0
    container_name: devops-lab-prometheus
    ports:
      - "${PROMETHEUS_PORT:-9090}:9090"
    volumes:
      - ./monitoring/prometheus.yml:/etc/prometheus/prometheus.yml:ro
      - ./monitoring/alert-rules-example.yml:/etc/prometheus/alert-rules-example.yml:ro
    command:
      - "--config.file=/etc/prometheus/prometheus.yml"
      - "--storage.tsdb.retention.time=1d"
    restart: unless-stopped
    depends_on:
      app:
        condition: service_healthy

  grafana:
    image: grafana/grafana:10.4.3
    container_name: devops-lab-grafana
    ports:
      - "${GRAFANA_PORT:-3001}:3000"
    environment:
      - GF_SECURITY_ADMIN_USER=${GRAFANA_ADMIN_USER:-lab-admin}
      - GF_SECURITY_ADMIN_PASSWORD=${GRAFANA_ADMIN_PASSWORD:-local-lab-password}
      - GF_USERS_ALLOW_SIGN_UP=false
    volumes:
      - ./monitoring/grafana/provisioning:/etc/grafana/provisioning:ro
      - ./monitoring/grafana/dashboards:/var/lib/grafana/dashboards:ro
    restart: unless-stopped
    depends_on:
      - prometheus