aiohttp.client_exceptions.clientconnector错误与使用Dockercompose和Lavalink的Discord bot

Question

我正在用python创建一个Discord bot，当我的bot尝试连接lavalink时，我遇到了一个错误。我对bot和lavalink使用Docker compose，我的lavalink客户端是wavelink。我已经检查了lavalink是否在正确的端口上

有人知道怎么了吗

我的docker-compose.yml：

version: "3.9"

services:
  bot:
    build:
      context: .
      dockerfile: Dockerfile
    restart: on-failure
    depends_on:
      lavalink:
        condition: service_started

  lavalink:
    container_name: lavalink
    image: fredboat/lavalink:master
    volumes:
      - ./Lavalink/application.yml:/opt/Lavalink/application.yml
    ports:
      - 2333
    restart: always

我的music.py

class Music(commands.Cog, wavelink.WavelinkMixin, name="music"):
    def __init__(self, client):
        self.client = client
        self.fancy_name = "Music"

        if not hasattr(client, 'wavelink'):
            self.client.wavelink = wavelink.Client(bot=self.client)

        self.client.loop.create_task(self.start_nodes())
    

    async def start_nodes(self):
        await self.client.wait_until_ready()

        await self.client.wavelink.initiate_node(host='127.0.0.1',
                                            port=2333,
                                            rest_uri='http://127.0.0.1:2333',
                                            password="pass",
                                            identifier='MAIN',
                                            region='us_central')

我的错误是：

 Traceback (most recent call last):
   File "/usr/local/lib/python3.9/site-packages/wavelink/websocket.py", line 76, in _connect
     self._websocket = await self._node.session.ws_connect(uri, headers=self.headers, heartbeat=self._node.heartbeat)
   File "/usr/local/lib/python3.9/site-packages/aiohttp/client.py", line 721, in _ws_connect
     resp = await self.request(method, url,
   File "/usr/local/lib/python3.9/site-packages/aiohttp/client.py", line 480, in _request
     conn = await self._connector.connect(
   File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 523, in connect
     proto = await self._create_connection(req, traces, timeout)
   File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 858, in _create_connection
     _, proto = await self._create_direct_connection(
   File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 1004, in _create_direct_connection
     raise last_exc
   File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 980, in _create_direct_connection
     transp, proto = await self._wrap_create_connection(
   File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 943, in _wrap_create_connection
     raise client_error(req.connection_key, exc) from exc
 aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host 127.0.0.1:2333 ssl:default [Connect call failed ('127.0.0.1', 2333)]

Answer 1

您的bot容器需要连接到http://lavalink:2333，而不是自身在127.0.0.1

Answer 2

映射错误您声明了端口，但未将其映射到本地主机端口。 改变这个

 ports:
      - 2333

到

ports:
    - "2333:2333"

这将把运行lavalink的docker容器中的端口映射到本地主机端口2333，或者您可以分配任何想要的端口

端口：

• “第一个参数：第二个参数” 第一：本地主机端口 第二：docker集装箱港口