simcore datcore-adapter service periodically fails to connect otel-collector host in inhouse-master deploy

[pcrespov]

• datcore service seems to have a problem communicating with otel-collector.
• Open graylog Log Analysis in master and will show periodic error with
  

log_msg
Exception while exporting Span batch.
Traceback (most recent call last):
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connection.py", line 198, in _new_conn
    sock = connection.create_connection(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/util/connection.py", line 60, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  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 -2] Name or service not known

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

Traceback (most recent call last):
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connectionpool.py", line 793, in urlopen
    response = self._make_request(
               ^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connectionpool.py", line 496, in _make_request
    conn.request(
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connection.py", line 400, in request
    self.endheaders()
  File "/usr/local/lib/python3.11/http/client.py", line 1298, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.11/http/client.py", line 1058, in _send_output
    self.send(msg)
  File "/usr/local/lib/python3.11/http/client.py", line 996, in send
    self.connect()
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connection.py", line 238, in connect
    self.sock = self._new_conn()
                ^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connection.py", line 205, in _new_conn
    raise NameResolutionError(self.host, self, e) from e
urllib3.exceptions.NameResolutionError: <urllib3.connection.HTTPConnection object at 0x7f3677767790>: Failed to resolve 'otel-collector' ([Errno -2] Name or service not known)

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

Traceback (most recent call last):
  File "/home/scu/.venv/lib/python3.11/site-packages/requests/adapters.py", line 667, in send
    resp = conn.urlopen(
           ^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/connectionpool.py", line 847, in urlopen
    retries = retries.increment(
              ^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/urllib3/util/retry.py", line 515, in increment
    raise MaxRetryError(_pool, url, reason) from reason  # type: ignore[arg-type]
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='otel-collector', port=4318): Max retries exceeded with url: /v1/traces (Caused by NameResolutionError("<urllib3.connection.HTTPConnection object at 0x7f3677767790>: Failed to resolve 'otel-collector' ([Errno -2] Name or service not known)"))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/scu/.venv/lib/python3.11/site-packages/opentelemetry/sdk/trace/export/__init__.py", line 367, in _export_batch
    self.span_exporter.export(self.spans_list[:idx])  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py", line 169, in export
    return self._export_serialized_spans(serialized_data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py", line 139, in _export_serialized_spans
    resp = self._export(serialized_data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py", line 114, in _export
    return self._session.post(
           ^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/requests/sessions.py", line 637, in post
    return self.request("POST", url, data=data, json=json, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/requests/sessions.py", line 589, in request
    resp = self.send(prep, **send_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/requests/sessions.py", line 703, in send
    r = adapter.send(request, **kwargs)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/scu/.venv/lib/python3.11/site-packages/requests/adapters.py", line 700, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='otel-collector', port=4318): Max retries exceeded with url: /v1/traces (Caused by NameResolutionError("<urllib3.connection.HTTPConnection object at 0x7f3677767790>: Failed to resolve 'otel-collector' ([Errno -2] Name or service not known)"))

[mrnicegyu11]

I hope my PR fixed this :--)

[mrnicegyu11]

Close if it looks fixed please

[mrnicegyu11]

again temporarily fixed on osparc.io, to fix this properly a prod-release is needed

[pcrespov]

again temporarily fixed on osparc.io, to fix this properly a prod-release is needed

@mrnicegyu11 I took the liberty of adding it in the next release issue ITISFoundation/osparc-simcore#6441

[mrnicegyu11]

I verified today that the issue is not present anymore both on on-prem and aws master, closing :--)