# 1. Run Beyla against the app's port (the app must already be running, listening on 8080)
docker run --privileged --pid=host \
  -v /sys/kernel/debug:/sys/kernel/debug:ro \
  -e BEYLA_OPEN_PORT=8080 \
  -e BEYLA_PROMETHEUS_PORT=8999 \
  -e OTEL_EXPORTER_OTLP_ENDPOINT=http://otel-collector:4318 \
  -p 8999:8999 \
  grafana/beyla

# 2. Generate some traffic
curl http://localhost:8080/ ; curl http://localhost:8080/api/users/42

# 3. Verify Beyla emitted metrics — should list http_server_request_duration_seconds + counters
curl -s http://localhost:8999/metrics | grep -E '^http_(server|client)_request_duration'

# 4. Verify traces — in Grafana Explore on Tempo, search by service.name (default = process name)
#    Or: query Tempo's search API for spans with service.name="<app>"

# 1. Verify DaemonSet rollout
kubectl -n monitoring rollout status ds/beyla

# 2. Verify pods are Running, one per node
kubectl -n monitoring get pods -l app=beyla -o wide

# 3. Verify eBPF probes attached (no errors mentioning BTF or "permission denied")
kubectl -n monitoring logs ds/beyla --tail=50 | grep -Ei 'error|fail|btf' || echo "clean"

# 4. Verify telemetry is flowing — check the Tempo/Alloy receiver for spans from the cluster
#    Or scrape one pod directly:
kubectl -n monitoring port-forward ds/beyla 8999:8999 &
curl -s localhost:8999/metrics | head

# beyla-config.yml
otel_traces_export:  { endpoint: http://alloy:4318 }
otel_metrics_export: { endpoint: http://alloy:4318 }

# Verify Alloy is forwarding — check Alloy UI (localhost:12345) for the
# otelcol.receiver.otlp.beyla component showing received spans/metrics > 0.