Instrument applications with OpenTelemetry SDK and validate telemetry using Kopai. Use when setting up observability, adding tracing/logging/metrics, testing instrumentation, debugging missing telemetry data, or when traces/logs/metrics aren't appearing after setup. Also use when users say things like "my traces aren't showing up", "I don't see any data", or "how do I add observability to my app".
100
100%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
| title | impact | tags |
|---|---|---|
| No Data Received | MEDIUM | troubleshoot, no-data |
Impact: MEDIUM
Troubleshoot when no telemetry data appears in Kopai.
Check Kopai is running
curl -X POST http://localhost:4318/v1/traces \
-H "Content-Type: application/json" \
-d '{"resourceSpans":[]}'Verify endpoint - Must be http://localhost:4318 (not 8000)
echo $OTEL_EXPORTER_OTLP_ENDPOINTCheck app logs - Look for OTEL export errors in application output
See troubleshoot-wrong-port.md for port confusion issues
rules