docker-compose.cluster.postgres.yml

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networks:
  appnet:

services:
  database:
    image: postgres:17
    restart: unless-stopped
    env_file:
      - .env
    environment:
      POSTGRES_USER: ${DB_USER:-postgres}
      POSTGRES_PASSWORD: ${DB_PASS:-password}
      POSTGRES_DB: ${DB_NAME:-peekaping}
    volumes:
      - ./.data/postgres:/var/lib/postgresql/data
    networks:
      - appnet
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "pg_isready -U ${DB_USER:-postgres} -d ${DB_NAME:-peekaping}",
        ]
      interval: 30s
      timeout: 2s
      retries: 5
      start_period: 5s

  redis:
    image: redis:7
    restart: unless-stopped
    networks:
      - appnet
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 30s
      timeout: 2s
      retries: 5
      start_period: 5s

  migrate:
    image: 0xfurai/peekaping-migrate:latest
    restart: "no"
    env_file:
      - .env
    depends_on:
      database:
        condition: service_healthy
    networks:
      - appnet

  api:
    image: 0xfurai/peekaping-api:latest
    restart: unless-stopped
    # the api takes up to 30 seconds to shut down cleanly
    stop_grace_period: 35s
    env_file:
      - .env
    environment:
      # The api isn't published: only the gateway and the other services on this network reach
      # it, all from private addresses. The gateway (nginx.conf) sets X-Forwarded-For to the
      # client's address, and the api believes that header from these addresses only. Set
      # TRUSTED_PROXIES in .env to change them; an empty TRUSTED_PROXIES= trusts nobody.
      TRUSTED_PROXIES: "${TRUSTED_PROXIES-127.0.0.0/8,::1/128,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,fc00::/7}"
      # The local probe's token: the api stores it, and the probe sends it. Without it no
      # monitor is checked.
      PROBE_BOOTSTRAP_TOKEN: "${PROBE_BOOTSTRAP_TOKEN:?PROBE_BOOTSTRAP_TOKEN is not set: add it to .env as a random string of at least 32 characters, such as the output of openssl rand -hex 32}"
    depends_on:
      database:
        condition: service_healthy
      redis:
        condition: service_healthy
      migrate:
        condition: service_completed_successfully
    networks:
      - appnet
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "wget -qO - http://localhost:8034/api/v1/health || exit 1",
        ]
      interval: 30s
      timeout: 2s
      retries: 5
      start_period: 5s

  # The local probe: its instances run the checks of the monitors that run on the local probe.
  # They connect to the api, so they need no database, no Redis and no volume. Run more of
  # them with `docker compose up -d --scale probe=3`: the monitors are dealt among them.
  probe:
    image: 0xfurai/peekaping-probe:latest
    restart: unless-stopped
    # the probe takes up to 25 seconds to shut down cleanly
    stop_grace_period: 30s
    environment:
      PEEKAPING_URL: http://api:8034
      # The probe refuses a plain http:// address to another host unless told otherwise.
      # This one stays on the compose network.
      PROBE_ALLOW_INSECURE: "true"
      # The token the api stores on the local probe (PROBE_BOOTSTRAP_TOKEN)
      PROBE_TOKEN: "${PROBE_BOOTSTRAP_TOKEN:?PROBE_BOOTSTRAP_TOKEN is not set: add it to .env as a random string of at least 32 characters, such as the output of openssl rand -hex 32}"
      LOG_LEVEL: ${LOG_LEVEL:-info}
    depends_on:
      api:
        condition: service_healthy
    networks:
      - appnet

  web:
    image: 0xfurai/peekaping-web:latest
    restart: unless-stopped
    depends_on:
      api:
        condition: service_healthy
    networks:
      - appnet
    healthcheck:
      test: ["CMD-SHELL", "curl -f http://localhost:80 || exit 1"]
      interval: 30s
      timeout: 2s
      retries: 5
      start_period: 5s

  gateway:
    image: nginx:latest
    restart: unless-stopped
    ports:
      - "8383:80"
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
    depends_on:
      api:
        condition: service_healthy
      web:
        condition: service_healthy
    networks:
      - appnet
    healthcheck:
      test: ["CMD-SHELL", "curl -f http://localhost:80 || exit 1"]
      interval: 30s
      timeout: 2s
      retries: 5
      start_period: 5s