Troubleshooting

No trace or span on the log entries

The logging layer is registered before tracing_opentelemetry::layer(), or that layer is missing. Register the OpenTelemetry layer first, see The logging layer. The layer prints a warning to stderr the first time it finds a span without context.

CryptoProviderMissing

The credentials are a service account key and no rustls crypto provider is installed. Enable auth-default-crypto, or install a provider, see TLS and crypto features.

Entries or spans are missing at the end of a run

Queued entries and spans are exported in the background. Shut down the tracer provider, the logger provider or the GcpCloudLoggingHandle before the process ends. A provider shutdown on a current-thread Tokio runtime does not export, see Limitations.

InvalidParametersError

A value was refused before it was used. The field names it: google_project_id (empty, or containing / or a control character), log_id (1 to 511 letters, digits and / _ - .) or endpoint (an https URI with a host).

Metrics are refused with InvalidArgument

The resource lacks service.instance.id or a real cloud.region, see Metrics over OTLP.

Permission denied

Check the API is enabled and the role is granted for the service, see Authentication.