Connection Refused Error in OpenTelemetry: Troubleshooting Guide

But now I got an error like this: ERROR:opentelemetry.sdk.trace.export:Exception while exporting Span. Traceback (most recent call last): File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 203, in _new_conn sock = connection.create_connection( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/util/connection.py", line 85, in create_connection raise err File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/util/connection.py", line 73, in create_connection sock.connect(sa) ConnectionRefusedError: [Errno 111] Connection refused The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connectionpool.py", line 791, in urlopen response = self._make_request( ^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connectionpool.py", line 497, in _make_request conn.request( File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 395, in request self.endheaders() File "/usr/lib/python3.12/http/client.py", line 1331, in endheaders self._send_output(message_body, encode_chunked=encode_chunked) File "/usr/lib/python3.12/http/client.py", line 1091, in _send_output self.send(msg) File "/usr/lib/python3.12/http/client.py", line 1035, in send self.connect() File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 243, in connect self.sock = self._new_conn() ^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 218, in _new_conn raise NewConnectionError( urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x727c19cacef0>: Failed to establish a new connection: [Errno 111] Connection refused The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/adapters.py", line 667, in send resp = conn.urlopen( ^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connectionpool.py", line 845, in urlopen retries = retries.increment( ^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/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='0.0.0.0', port=6006): Max retries exceeded with url: /v1/traces (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x727c19cacef0>: 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 "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/init.py", line 139, in _export resp = self._session.post( ^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/sessions.py", line 637, in post return self.request("POST", url, data=data, json=json, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/sessions.py", line 589, in request resp = self.send(prep, **send_kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/sessions.py", line 703, in send r = adapter.send(request, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/adapters.py", line 700, in send raise ConnectionError(e, request=request) requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=6006): Max retries exceeded with url: /v1/traces (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x727c19cacef0>: 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 "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 203, in _new_conn sock = connection.create_connection( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/util/connection.py", line 85, in create_connection raise err File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/util/connection.py", line 73, in create_connection sock.connect(sa) ConnectionRefusedError: [Errno 111] Connection refused The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connectionpool.py", line 791, in urlopen response = self._make_request( ^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connectionpool.py", line 497, in _make_request conn.request( File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 395, in request self.endheaders() File "/usr/lib/python3.12/http/client.py", line 1331, in endheaders self._send_output(message_body, encode_chunked=encode_chunked) File "/usr/lib/python3.12/http/client.py", line 1091, in _send_output self.send(msg) File "/usr/lib/python3.12/http/client.py", line 1035, in send self.connect() File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 243, in connect self.sock = self._new_conn() ^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connection.py", line 218, in _new_conn raise NewConnectionError( urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x727c19cad5e0>: Failed to establish a new connection: [Errno 111] Connection refused The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/adapters.py", line 667, in send resp = conn.urlopen( ^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/urllib3/connectionpool.py", line 845, in urlopen retries = retries.increment( ^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/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='0.0.0.0', port=6006): Max retries exceeded with url: /v1/traces (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x727c19cad5e0>: 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 "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/opentelemetry/sdk/trace/export/init.py", line 109, in on_end self.span_exporter.export((span,)) File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/init.py", line 204, in export return self._export_serialized_spans(serialized_data) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/init.py", line 174, in _export_serialized_spans resp = self._export(serialized_data) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/opentelemetry/exporter/otlp/proto/http/trace_exporter/init.py", line 147, in _export resp = self._session.post( ^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/sessions.py", line 637, in post return self.request("POST", url, data=data, json=json, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/sessions.py", line 589, in request resp = self.send(prep, **send_kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/sessions.py", line 703, in send r = adapter.send(request, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/sdlcuser/guardrails-agents/myenv/lib/python3.12/site-packages/requests/adapters.py", line 700, in send raise ConnectionError(e, request=request) requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=6006): Max retries exceeded with url: /v1/traces (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x727c19cad5e0>: Failed to establish a new connection: [Errno 111] Connection refused')) Any solution to this error??