docker-compose无法parsing服务主机名

Docker文档说，同一个撰写文件中的每个容器都可以通过使用他们的服务名称相互访问。 这似乎是除了磅以外的所有容器。

version: "3" services: lb: image: nginx volumes: - ./conf/nginx:/etc/nginx/conf.d/default.conf ports: - "8080:80" environment: - NGINX_HOST=foobar.com - NGINX_PORT=80 stdin_open: true tty: true worker1: build: ./rel_sync_worker/. stdin_open: true tty: true depends_on : - broker - lb worker2: build: ./rel_sync_worker/. stdin_open: true tty: true depends_on : - broker - lb broker: build: ./broker/. ports: - "4444:4444/udp" stdin_open: true tty: true depends_on: - lb 

broker1.py

 import socket host = socket.gethostbyname("broker") print "broker", host host = socket.gethostbyname("worker1") print "worker1", host host = socket.gethostbyname("lb") # host = "127.0.0.1" print host port = 5555 

broker1输出：

 broker_1 | broker 172.18.0.4 broker_1 | worker1 172.18.0.2 broker_1 | Traceback (most recent call last): broker_1 | File "sendertest.py", line 11, in <module> broker_1 | host = socket.gethostbyname("lb") broker_1 | socket.gaierror: [Errno -2] Name or service not known 

Answer 1

也许你应该添加一个公共networking。

 version: "3" services: lb: image: nginx volumes: - ./conf/nginx:/etc/nginx/conf.d/default.conf ports: - "8080:80" environment: - NGINX_HOST=foobar.com - NGINX_PORT=80 stdin_open: true tty: true netwok: - common-network worker1: build: ./rel_sync_worker/. stdin_open: true tty: true depends_on : - broker - lb netwok: - common-network worker2: build: ./rel_sync_worker/. stdin_open: true tty: true depends_on : - broker - lb broker: build: ./broker/. ports: - "4444:4444/udp" stdin_open: true tty: true depends_on: - lb netwok: networks: common-netwok: driver: overlay 

我不明白，如果你的lb容器正在运行ofc，那么你的default.conf文件可能不正确。

希望能帮助到你。