CI Failure (HTTP max retries querying cloud storage status) in EndToEndShadowIndexingTestWithDisruptions.test_write_with_node_failures

[andrwng]

https://buildkite.com/redpanda/redpanda/builds/27780#0187a64c-f0d3-407b-976f-b6b12bc2dee2

Module: rptest.tests.e2e_shadow_indexing_test
Class:  EndToEndShadowIndexingTestWithDisruptions
Method: test_write_with_node_failures
Arguments:
{
  "cloud_storage_type": 2
}

test_id:    rptest.tests.e2e_shadow_indexing_test.EndToEndShadowIndexingTestWithDisruptions.test_write_with_node_failures.cloud_storage_type=CloudStorageType.ABS
status:     FAIL
run time:   43.911 seconds


    ConnectionError(MaxRetryError("HTTPConnectionPool(host='docker-rp-21', port=9644): Max retries exceeded with url: /v1/cloud_storage/status/__consumer_offsets/2 (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3ecb961210>: Failed to establish a new connection: [Errno 111] Connection refused'))"))
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connection.py", line 159, in _new_conn
    conn = connection.create_connection(
  File "/usr/local/lib/python3.10/dist-packages/urllib3/util/connection.py", line 84, in create_connection
    raise err
  File "/usr/local/lib/python3.10/dist-packages/urllib3/util/connection.py", line 74, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connectionpool.py", line 670, in urlopen
    httplib_response = self._make_request(
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connectionpool.py", line 392, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python3.10/http/client.py", line 1282, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.10/http/client.py", line 1328, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.10/http/client.py", line 1277, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.10/http/client.py", line 1037, in _send_output
    self.send(msg)
  File "/usr/lib/python3.10/http/client.py", line 975, in send
    self.connect()
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connection.py", line 187, in connect
    conn = self._new_conn()
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connection.py", line 171, in _new_conn
    raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f3ecb961210>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connectionpool.py", line 726, in urlopen
    retries = retries.increment(
  File "/usr/local/lib/python3.10/dist-packages/urllib3/util/retry.py", line 446, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='docker-rp-21', port=9644): Max retries exceeded with url: /v1/cloud_storage/status/__consumer_offsets/2 (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3ecb961210>: Failed to establish a new connection: [Errno 111] Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/ducktape/tests/runner_client.py", line 135, in run
    data = self.run_test()
  File "/usr/local/lib/python3.10/dist-packages/ducktape/tests/runner_client.py", line 227, in run_test
    return self.test_context.function(self.test)
  File "/usr/local/lib/python3.10/dist-packages/ducktape/mark/_mark.py", line 481, in wrapper
    return functools.partial(f, *args, **kwargs)(*w_args, **w_kwargs)
  File "/root/tests/rptest/services/cluster.py", line 95, in wrapped
    self.redpanda.stop_and_scrub_object_storage()
  File "/root/tests/rptest/services/redpanda.py", line 2951, in stop_and_scrub_object_storage
    wait_until(all_partitions_uploaded_manifest,
  File "/usr/local/lib/python3.10/dist-packages/ducktape/utils/util.py", line 53, in wait_until
    raise e
  File "/usr/local/lib/python3.10/dist-packages/ducktape/utils/util.py", line 44, in wait_until
    if condition():
  File "/root/tests/rptest/services/redpanda.py", line 2925, in all_partitions_uploaded_manifest
    status = self._admin.get_partition_cloud_storage_status(
  File "/root/tests/rptest/services/admin.py", line 907, in get_partition_cloud_storage_status
    return self._request("GET",
  File "/root/tests/rptest/services/admin.py", line 334, in _request
    r = self._session.request(verb, url, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/adapters.py", line 516, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='docker-rp-21', port=9644): Max retries exceeded with url: /v1/cloud_storage/status/__consumer_offsets/2 (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3ecb961210>: Failed to establish a new connection: [Errno 111] Connection refused'))

[andrwng]

sev/med the test has some process restarts so maybe it's normal for retries, so maybe it's expected to have some instability at the HTTP layer. Still a little surprising to see the HTTP endpoint being bogged down for very long, so worth investigating

[michael-redpanda]

https://buildkite.com/redpanda/redpanda/builds/28276#0187c97c-a0d6-46e2-aca2-d09ebb6562aa

[jcsp]

This appears to be a resurgence of what #10196 was meant to fix