secrets:
  postgres_db:
    file: ./secrets/postgres_db.txt
  postgres_user:
    file: ./secrets/postgres_user.txt
  postgres_password:
    file: ./secrets/postgres_password.txt

networks:
  database:
  web:
  agent:
  proxy:
    external: true
    name: ${DOCKER_PROXY_NETWORK}

services:
  postgres-server:
    image: postgres:${POSTGRES_TAG}
    restart: unless-stopped
    volumes:
      - ${VOLUME_PATH}/var/lib/postgresql/data:/var/lib/postgresql/data:rw
    networks:
      - database
    secrets:
      - postgres_db
      - postgres_user
      - postgres_password
    environment:
      POSTGRES_DB_FILE: /run/secrets/postgres_db
      POSTGRES_USER_FILE: /run/secrets/postgres_user
      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password

  zabbix-server:
    image: zabbix/zabbix-server-pgsql:${ZABBIX_TAG}
    restart: unless-stopped
    networks:
      - database
      - web
      - agent
    secrets:
      - postgres_db
      - postgres_user
      - postgres_password
    environment:
      POSTGRES_DB_FILE: /run/secrets/postgres_db
      POSTGRES_USER_FILE: /run/secrets/postgres_user
      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
      ZBX_HISTORYSTORAGETYPES: log,text # Zabbix configuration variables
      ZBX_DEBUGLEVEL: 1
      ZBX_HOUSEKEEPINGFREQUENCY: 1
      ZBX_MAXHOUSEKEEPERDELETE: 5000
      ZBX_STARTPINGERS: 5
      ZBX_STARTDISCOVERERS: 5
    ports:
      - 10051:10051
    depends_on:
      - postgres-server
    volumes:
      - ${VOLUME_PATH}/usr/lib/zabbix/alertscripts:/usr/lib/zabbix/alertscripts:rw

  zabbix-web:    # The main Zabbix web UI or interface 
    image: zabbix/zabbix-web-nginx-pgsql:${ZABBIX_TAG}
    restart: unless-stopped
    networks:
      - proxy
      - database
      - web
    secrets:
      - postgres_db
      - postgres_user
      - postgres_password
    environment:  # Postgres database variables
      POSTGRES_DB_FILE: /run/secrets/postgres_db
      POSTGRES_USER_FILE: /run/secrets/postgres_user
      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
      ZBX_SERVER_HOST: zabbix-server  # Zabbix related and PHP variables
      ZBX_POSTMAXSIZE: 64M
      PHP_TZ: ${ZABBIX_TZ}
      ZBX_MAXEXECUTIONTIME: 500
    depends_on:
      - postgres-server
      - zabbix-server
    # ports: # Port where Zabbix UI is available
    #   - 80:8080

  zabbix-agent:   # Zabbix agent service that tracks usage and send to zabbix server
    image: zabbix/zabbix-agent:${ZABBIX_TAG}
    restart: unless-stopped
    networks:
      - agent
    # network_mode: "host"
    privileged: true
    depends_on:
      - zabbix-server