连接到自建API的Python

Question

我构建了一个API (带有烧瓶-restful)，它将数据存储在缓存中，并将其公开给其他应用程序。当我试图从另一个应用程序(也是烧瓶)向这个API发送get请求时，它会返回以下错误

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connection.py", line 170, in _new_conn
    (self._dns_host, self.port), self.timeout, **extra_kw
  File "/usr/local/lib/python3.6/dist-packages/urllib3/util/connection.py", line 73, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  File "/usr/lib/python3.6/socket.py", line 745, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connectionpool.py", line 706, in urlopen
    chunked=chunked,
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connectionpool.py", line 382, in _make_request
    self._validate_conn(conn)
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connectionpool.py", line 1010, in _validate_conn
    conn.connect()
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connection.py", line 353, in connect
    conn = self._new_conn()
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connection.py", line 182, in _new_conn
    self, "Failed to establish a new connection: %s" % e
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPSConnection object at 0x7f6f965d9358>: Failed to establish a new connection: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/urllib3/util/retry.py", line 574, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='data-collector.cloud', port=443): Max retries exceeded with url: /sample_url (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f6f965d9358>: Failed to establish a new connection: [Errno -2] Name or service not known',))

我认为发生此错误是因为我向API发送了太多带有相同url的请求。然后，我将decorators = [index.limiter.limit("60/minute")]添加到API中，从而限制了API调用的次数。然而，错误仍然持续存在。然后，我认为错误可能是由服务器接受的调用数量造成的。我以为在调用API之后，我没有正确地关闭连接。所以我加入了

from requests.packages.urllib3 import Retry, PoolManager

retries = Retry(connect=5, read=2, redirect=5)
with PoolManager(retries=retries) as http:
    response = http.request('GET', url)

但这也解决不了我的问题。我在这里错过了什么？我用的是丙酮3.8

编辑：--我发现导致它的并不是查询本身，因为如果我尝试其他查询，就会弹出相同的消息。我仍然不知道如何调试这个:/

Answer 1

错误上写着：“姓名或服务不知道”。换句话说，这是一个名称解析问题(DNS)。

交叉检查目标主机(“数据收集器。云”，它不在公共DNS记录中)。