Kubernetes pod 中的名称解析失败

如何解决Kubernetes pod 中的名称解析失败

我正在我的计算机上的 multipass 上运行 Kubeflow 部署。我已经根据 this tutorial 部署了 Kubeflow。我正在创建可重复使用的组件 according to the documentation，这是我的管道中一个组件的步骤的一部分。

    db_name = os.getenv("MysqL_DB_NAME")
    user_name = os.getenv("MysqL_USER_NAME")
    password = os.getenv("MysqL_PASSWORD")
    endpoint = os.getenv("MysqL_ENDPOINT")

    with open('query.sql','r') as file:
        query = file.read()

    con = MysqL.connector.connect(
        user=user_name,password=password,host=endpoint,database=db_name,use_pure=True
    )

用户名、密码等数据由 Kubernetes 密钥提供。我已经测试了凭据和连接性，并且能够使用 MysqL 工作台连接到数据库，但是当从我的管道组件运行它时，我收到以下错误：

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/MysqL/connector/network.py",line 482,in open_connection
    addrinfos = socket.getaddrinfo(self.server_host,File "/usr/local/lib/python3.9/socket.py",line 953,in getaddrinfo
    for res in _socket.getaddrinfo(host,port,family,type,proto,flags):
socket.gaierror: [Errno -3] Temporary failure in name resolution
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
  File "/src/get_data.py",line 39,in <module>
    get_data_from_database(args.output_path)
  File "/src/get_data.py",line 22,in get_data_from_database
    con = MysqL.connector.connect(
  File "/usr/local/lib/python3.9/site-packages/MysqL/connector/__init__.py",line 179,in connect
    return MysqLConnection(*args,**kwargs)
  File "/usr/local/lib/python3.9/site-packages/MysqL/connector/connection.py",line 95,in __init__
    self.connect(**kwargs)
  File "/usr/local/lib/python3.9/site-packages/MysqL/connector/abstracts.py",line 716,in connect
    self._open_connection()
  File "/usr/local/lib/python3.9/site-packages/MysqL/connector/connection.py",line 206,in _open_connection
    self._socket.open_connection()
  File "/usr/local/lib/python3.9/site-packages/MysqL/connector/network.py",line 500,in open_connection
    raise errors.InterfaceError(
MysqL.connector.errors.InterfaceError: 2003: Can't connect to MysqL server on 'DATABASE URL HERE' (-3 Temporary failure in name resolution)

在我看来，这可能是网络配置问题，但我不知道是什么问题。关于可能导致此问题的原因有什么想法吗？

编辑 1： 我已经检查了 coredns 的日志，结果如下：

2021-04-13T17:10:56.993Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:37555->8.8.8.8:53: I/O timeout
2021-04-13T17:10:57.200Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:38679->8.8.4.4:53: I/O timeout
2021-04-13T17:10:57.607Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:49867->8.8.8.8:53: I/O timeout
2021-04-13T17:10:57.881Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:38816->8.8.8.8:53: I/O timeout
2021-04-13T17:10:58.031Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:50459->8.8.4.4:53: I/O timeout
2021-04-13T17:10:58.070Z [ERROR] plugin/errors: 2 Metadata-grpc-service.mshome.net. AAAA: read udp 10.1.1.90:33914->8.8.8.8:53: I/O timeout
2021-04-13T17:10:58.950Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:33273->8.8.4.4:53: I/O timeout
2021-04-13T17:10:58.974Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:53405->8.8.4.4:53: I/O timeout
2021-04-13T17:10:59.009Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:46594->8.8.4.4:53: I/O timeout
2021-04-13T17:10:59.201Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:47334->8.8.8.8:53: I/O timeout
2021-04-13T17:10:59.620Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:56790->8.8.4.4:53: I/O timeout
2021-04-13T17:10:59.911Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:44284->8.8.4.4:53: I/O timeout
2021-04-13T17:11:00.097Z [ERROR] plugin/errors: 2 Metadata-grpc-service.mshome.net. AAAA: read udp 10.1.1.90:59630->8.8.8.8:53: I/O timeout
2021-04-13T17:11:00.789Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:57692->8.8.4.4:53: I/O timeout
2021-04-13T17:11:00.789Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:59542->8.8.4.4:53: I/O timeout
2021-04-13T17:11:00.804Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:50422->8.8.8.8:53: I/O timeout
2021-04-13T17:11:00.951Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:60086->8.8.4.4:53: I/O timeout
2021-04-13T17:11:01.257Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:35778->8.8.8.8:53: I/O timeout
2021-04-13T17:11:01.621Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:58926->8.8.8.8:53: I/O timeout
2021-04-13T17:11:01.873Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:60646->8.8.8.8:53: I/O timeout
2021-04-13T17:11:01.951Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:50084->8.8.4.4:53: I/O timeout
2021-04-13T17:11:02.098Z [ERROR] plugin/errors: 2 Metadata-grpc-service.mshome.net. AAAA: read udp 10.1.1.90:59431->8.8.8.8:53: I/O timeout
2021-04-13T17:11:02.611Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:59929->8.8.8.8:53: I/O timeout
2021-04-13T17:11:02.792Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:44759->8.8.4.4:53: I/O timeout
2021-04-13T17:11:02.793Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:49814->8.8.4.4:53: I/O timeout
2021-04-13T17:11:02.809Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:39801->8.8.8.8:53: I/O timeout
2021-04-13T17:11:02.906Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:43867->8.8.8.8:53: I/O timeout
2021-04-13T17:11:02.952Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:51358->8.8.8.8:53: I/O timeout
2021-04-13T17:11:03.028Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:43346->8.8.8.8:53: I/O timeout
2021-04-13T17:11:03.203Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:58517->8.8.8.8:53: I/O timeout
2021-04-13T17:11:03.686Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:42878->8.8.8.8:53: I/O timeout
2021-04-13T17:11:03.874Z [ERROR] plugin/errors: 2 storage.googleapis.com.mshome.net. A: read udp 10.1.1.90:60683->8.8.4.4:53: I/O timeout
2021-04-13T17:11:03.952Z [ERROR] plugin/errors: 2 www.googleapis.com.mshome.net. A: read udp 10.1.1.90:33429->8.8.4.4:53: I/O timeout

Kubernetes pod 中的名称解析失败

如何解决Kubernetes pod 中的名称解析失败

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