Sentry error - Temporary failure in name resolution - django

Question

I got an error on my server.
DEBUG 2019-01-20 08:38:01,498 base 32461 140474717611392 Sending message of length 7076 to https://sentry.theinvaders.pro/api/30/store/
ERROR 2019-01-20 08:38:01,505 base 32461 140474190894848 Sentry responded with an error: <urlopen error [Errno -3] Temporary failure in name resolution> (url: https://sentry.theinvaders.pro/api/30/store/)
Traceback (most recent call last):
File "/usr/lib/python3.6/urllib/request.py", line 1318, in do_open
encode_chunked=req.has_header('Transfer-encoding'))
File "/usr/lib/python3.6/http/client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib/python3.6/http/client.py", line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib/python3.6/http/client.py", line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib/python3.6/http/client.py", line 1026, in _send_output
self.send(msg)
File "/usr/lib/python3.6/http/client.py", line 964, in send
self.connect()
File "/var/www/mass/var/venv/lib/python3.6/site-packages/raven/utils/http.py", line 31, in connect
timeout=self.timeout,
File "/usr/lib/python3.6/socket.py", line 704, in create_connection
for res in getaddrinfo(host, port, 0, 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 -3] Temporary failure in name resolution
>During handling of the above exception, another exception occurred:
>Traceback (most recent call last):
File "/var/www/mass/var/venv/lib/python3.6/site-packages/raven/transport/threaded.py", line 165, in send_sync
super(ThreadedHTTPTransport, self).send(url, data, headers)
File "/var/www/mass/var/venv/lib/python3.6/site-packages/raven/transport/http.py", line 43, in send
ca_certs=self.ca_certs,
File "/var/www/mass/var/venv/lib/python3.6/site-packages/raven/utils/http.py", line 66, in urlopen
return opener.open(url, data, timeout)
File "/usr/lib/python3.6/urllib/request.py", line 526, in open
response = self._open(req, data)
File "/usr/lib/python3.6/urllib/request.py", line 544, in _open
'_open', req)
File "/usr/lib/python3.6/urllib/request.py", line 504, in _call_chain
result = func(*args)
File "/var/www/mass/var/venv/lib/python3.6/site-packages/raven/utils/http.py", line 46, in https_open
return self.do_open(ValidHTTPSConnection, req)
File "/usr/lib/python3.6/urllib/request.py", line 1320, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>
ERROR 2019-01-20 08:38:01,509 base 32461 140474190894848 ['OperationalError: could not translate host name "localhost" to address: Temporary failure in name resolution\n', ' File "django/core/handlers/exception.py", line 34, in inner', ' File "django/core/handlers/base.py", line 126, in _get_response', ' File "django/core/handlers/base.py", line 124, in _get_response', ' File "django/views/decorators/csrf.py", line 54, in wrapped_view', ' File "django/views/generic/base.py", line 68, in view', ' File "rest_framework/views.py", line 483, in dispatch', ' File "rest_framework/views.py", line 443, in handle_exception', ' File "rest_framework/views.py", line 480, in dispatch', ' File "rest_framework/decorators.py", line 53, in handler', ' File "mass/api/version1/candidate/views.py", line 66, in search_candidate', ' File "django/db/transaction.py", line 147, in __enter__', ' File "django/db/backends/base/base.py", line 378, in get_autocommit', ' File "django/db/backends/base/base.py", line 216, in ensure_connection', ' File "django/db/utils.py", line 89, in __exit__', ' File "django/db/backends/base/base.py", line 216, in ensure_connection', ' File "django/db/backends/base/base.py", line 194, in connect', ' File "django/db/backends/postgresql/base.py", line 178, in get_new_connection', ' File "psycopg2/__init__.py", line 130, in connect']
This lasted for 2 hours. Then the server rebooted. And everything began to work normally.
Please tell me what could be the cause of this.

Answer 1

The hosting provider had an error a DNS server.