Error: Cannot connect to host

[dbolton]

The integration temporarily stopped working for me. Restarting Home Assistant got the integration working again.

The logs show the following error.

This error originated from a custom integration.

Logger: homeassistant
Source: custom_components/ha_hatch/__init__.py:77
Integration: Hatch Rest Mini/Plus (documentation, issues)
First occurred: 7:02:55 AM (1 occurrences)
Last logged: 7:02:55 AM

Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aiohttp/connector.py", line 1173, in _create_direct_connection
    hosts = await asyncio.shield(host_resolved)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/connector.py", line 884, in _resolve_host
    addrs = await self._resolver.resolve(host, port, family=self._family)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/resolver.py", line 33, in resolve
    infos = await self._loop.getaddrinfo(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/asyncio/base_events.py", line 867, in getaddrinfo
    return await self.run_in_executor(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/socket.py", line 962, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
socket.gaierror: [Errno -3] Try again

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/config/custom_components/ha_hatch/__init__.py", line 77, in setup_connection
    _, mqtt_connection, rest_devices, expiration_time = await get_rest_devices(
                                                        ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/hatch_rest_api/util_bootstrap.py", line 38, in get_rest_devices
    aws_credentials = await aws_http.aws_credentials(
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/hatch_rest_api/aws_http.py", line 42, in aws_credentials
    await self._post_request_with_logging_and_errors_raised(
  File "/usr/local/lib/python3.11/site-packages/hatch_rest_api/util_http.py", line 22, in request_with_logging_wrapper
    response = await func(*args, **kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/hatch_rest_api/aws_http.py", line 27, in _post_request_with_logging_and_errors_raised
    return await self.api_session.post(url=url, json=json_body, headers=headers)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/client.py", line 574, in _request
    conn = await self._connector.connect(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/connector.py", line 544, in connect
    proto = await self._create_connection(req, traces, timeout)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/connector.py", line 911, in _create_connection
    _, proto = await self._create_direct_connection(req, traces, timeout)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/aiohttp/connector.py", line 1187, in _create_direct_connection
    raise ClientConnectorError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host cognito-identity.us-west-2.amazonaws.com:443 ssl:default [Try again]

[dahlb]

have you been able to reproduce this? it sounds like an intermittent problem connecting to aws

[dbolton]

It was just the one time so far.