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# generals
Slackbot
09/27/2022, 12:43 PMThis message was deleted.
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Ashu
09/27/2022, 12:49 PM
Hi Shruti, Welcome to the community 👋
Your application must generate some data for it appear on the UI. Can you check this once: https://signoz.io/docs/instrumentation/javascript/#validating-instrumentation-by-checking-for-traces
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Shruti Choudhary
09/27/2022, 1:02 PMMy application does generate data as the consoleExporter works. The signoz UI still doesnt display any data.
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Ashu
09/27/2022, 1:03 PM
Ok. Can you try this troubleshooting guide to check whether SigNoz Otel collector is accessible from your app: https://signoz.io/docs/install/troubleshooting/?
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Shruti Choudhary
09/27/2022, 1:15 PMI amgetting a connection refused, what could be the potential issue
Shruti Choudhary
09/27/2022, 1:15 PM2022-09-27T131412.996Z INFO troubleshoot/main.go:28 STARTING!
2022-09-27T131412.997Z INFO checkEndpoint/checkEndpoint.go:41 checking reachability of SigNoz endpointError: not able to send data to SigNoz endpoint ...
rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp 127.0.0.14317 connect: connection refused"
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Ashu
09/27/2022, 1:22 PM
Might be a permission issue. Port 4317, and 4318 on the machine where SigNoz is installed should be open to receive the telemetry data. Here's an OTel collector address grid guide.
@Prashant Shahi can you look into this?
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Shruti Choudhary
09/28/2022, 1:49 AMThis works when I execute the node app with sudo.
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Prashant Shahi
09/28/2022, 5:05 AM@Shruti Choudhary That could happen when there is issue with docker network. Or it could be related to node itself.
Could you please try troubleshooting binary?
https://signoz.io/docs/install/troubleshooting/
Prashant Shahi
09/28/2022, 5:06 AMWith that you can test whether or not, the signoz otel-collector OTLP endpoint is exposed and accessible.
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