ConnectionError: HTTPSConnectionPool(host='none', port=443): Max retries exceeded with url: /api/v0/catalog/ (Caus...

[sentry-io]

A good fix for this would probably be to retry on a delay and log an error if we fail on too many retries.

Sentry Issue: DISCUSSIONS-2S0

gaierror: [Errno -2] Name or service not known
  File "urllib3/connection.py", line 159, in _new_conn
    (self._dns_host, self.port), self.timeout, **extra_kw)
  File "urllib3/util/connection.py", line 57, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  File "socket.py", line 748, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):

NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7f8ffa0d54a8>: Failed to establish a new connection: [Errno -2] Name or service not known
(3 additional frame(s) were not displayed)
...
  File "urllib3/connectionpool.py", line 343, in _make_request
    self._validate_conn(conn)
  File "urllib3/connectionpool.py", line 839, in _validate_conn
    conn.connect()
  File "newrelic/hooks/external_httplib.py", line 33, in httplib_connect_wrapper
    return wrapped(*args, **kwargs)
  File "urllib3/connection.py", line 301, in connect
    conn = self._new_conn()
  File "urllib3/connection.py", line 168, in _new_conn
    self, "Failed to establish a new connection: %s" % e)

MaxRetryError: HTTPSConnectionPool(host='none', port=443): Max retries exceeded with url: /api/v0/catalog/ (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f8ffa0d54a8>: Failed to establish a new connection: [Errno -2] Name or service not known'))
  File "requests/adapters.py", line 449, in send
    timeout=timeout
  File "urllib3/connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "urllib3/util/retry.py", line 399, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))

ConnectionError: HTTPSConnectionPool(host='none', port=443): Max retries exceeded with url: /api/v0/catalog/ (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f8ffa0d54a8>: Failed to establish a new connection: [Errno -2] Name or service not known'))
(9 additional frame(s) were not displayed)
...
  File "newrelic/api/external_trace.py", line 62, in dynamic_wrapper
    return return_value(trace, lambda: wrapped(*args, **kwargs))
  File "newrelic/api/coroutine_trace.py", line 171, in return_value
    return fn()
  File "newrelic/api/external_trace.py", line 62, in <lambda>
    return return_value(trace, lambda: wrapped(*args, **kwargs))
  File "requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "requests/adapters.py", line 516, in send
    raise ConnectionError(e, request=request)