Advanced Configuration

Collector (collector-config.yaml)

Single OTLP receiver (gRPC 4317 / HTTP 4318) feeding three pipelines:

• metrics → Prometheus exporter (:8889)
• logs → Loki via otlphttp
• traces → Tempo via otlp/tempo (gRPC)

A resource processor tags all telemetry with environment=production. Change the value in collector-config.yaml to match your environment.

Tempo (tempo.yaml)

Local block storage with a 24h retention window. Increase compactor.compaction.block_retention for longer retention.

Trace → Logs Linking (grafana-datasources.yml)

Maps the session.id span attribute to the Loki session_id label so clicking a span jumps to the matching session logs:

jsonData:
  tracesToLogsV2:
    datasourceUid: loki
    customQuery: true
    query: '{service_name="opencode"} | session_id="$${__span.tags["session.id"]}"'

Note

$$ in $${__span.tags[...]} is how Grafana provisioning escapes a literal $ to prevent environment-variable interpolation. At runtime Grafana evaluates it as ${__span.tags["session.id"]}.