mirror of
https://github.com/katanemo/plano.git
synced 2026-05-27 14:17:15 +02:00
104 lines
4 KiB
Markdown
104 lines
4 KiB
Markdown
|
# Plano Observability Stack
|
||
|
|
|
||
|
|
Grafana dashboard for monitoring Plano LLM gateway traffic using trace-derived metrics.
|
||
|
|
|
||
|
|
## Architecture
|
||
|
|
|
||
|
|
```
|
||
|
|
Plano (brightstaff) --OTLP gRPC--> OTEL Collector --traces--> Tempo
|
||
|
|
|
|
||
|
|
spanmetrics connector
|
||
|
|
|
|
||
|
|
v
|
||
|
|
Prometheus <--- Grafana
|
||
|
|
^
|
||
|
|
|
|
||
|
|
Envoy /stats/prometheus
|
||
|
|
```
|
||
|
|
|
||
|
|
The OTEL Collector receives traces from Plano and does two things:
|
||
|
|
1. Forwards them to Tempo for trace viewing
|
||
|
|
2. Derives Prometheus metrics (request counts, latency histograms) from spans via the **spanmetrics connector**
|
||
|
|
|
||
|
|
Prometheus also scrapes Envoy's native stats endpoint for WASM metrics like `ratelimited_rq`.
|
||
|
|
|
||
|
|
## Quick Start
|
||
|
|
|
||
|
|
### 1. Start the observability stack
|
||
|
|
|
||
|
|
```bash
|
||
|
|
cd demos/observability
|
||
|
|
docker compose up -d
|
||
|
|
```
|
||
|
|
|
||
|
|
### 2. Configure Plano to send traces to the OTEL Collector
|
||
|
|
|
||
|
|
Add or update the `tracing` section in your `plano_config.yaml`:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
tracing:
|
||
|
|
# Sample 100% of requests (adjust for production)
|
||
|
|
random_sampling: 100
|
||
|
|
# Point at the OTEL Collector's OTLP gRPC port (host port 9317)
|
||
|
|
opentracing_grpc_endpoint: http://localhost:9317
|
||
|
|
```
|
||
|
|
|
||
|
|
If Plano is running inside Docker on the same network, use the service name
|
||
|
|
and the container-internal port instead:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
tracing:
|
||
|
|
random_sampling: 100
|
||
|
|
opentracing_grpc_endpoint: http://otel-collector:4317
|
||
|
|
```
|
||
|
|
|
||
|
|
### 3. Restart Plano
|
||
|
|
|
||
|
|
Restart Plano so brightstaff picks up the new tracing config. Traces will flow
|
||
|
|
into the OTEL Collector, which forwards them to Tempo and generates Prometheus
|
||
|
|
metrics from span data.
|
||
|
|
|
||
|
|
### 4. Open Grafana
|
||
|
|
|
||
|
|
Navigate to http://localhost:9000 and log in with `admin` / `admin`.
|
||
|
|
The **Plano - Requests Overview** dashboard is auto-provisioned under the
|
||
|
|
"Plano" folder. Send a few requests through Plano and the panels will
|
||
|
|
start populating within ~15 seconds (the Prometheus scrape interval).
|
||
|
|
|
||
|
|
## Access
|
||
|
|
|
||
|
|
| Service | URL | Credentials |
|
||
|
|
|----------------|------------------------------|---------------|
|
||
|
|
| Grafana | http://localhost:9000 | admin / admin |
|
||
|
|
| Tempo | http://localhost:9200 | |
|
||
|
|
| Prometheus | http://localhost:9190 | |
|
||
|
|
| OTEL Collector | http://localhost:9317 (gRPC) | |
|
||
|
|
|
||
|
|
The **Plano - Requests Overview** dashboard is auto-provisioned in Grafana under the "Plano" folder.
|
||
|
|
|
||
|
|
## Dashboard Panels
|
||
|
|
|
||
|
|
| Panel | Query Source | What It Shows |
|
||
|
|
|-------|-------------|---------------|
|
||
|
|
| LLM Requests/sec by Model | spanmetrics `calls_total{service_name="plano(llm)"}` by `llm_model` | Per-model request rate over time |
|
||
|
|
| Agent Requests/sec by Agent | spanmetrics `calls_total{service_name="plano(agent)"}` by `agent_id` | Per-agent invocation rate over time |
|
||
|
|
| Total Requests/sec | spanmetrics `calls_total` by service | Aggregate request rate across LLM, agent, and orchestrator |
|
||
|
|
| Rate-Limited Requests/sec | Envoy `envoy_wasmcustom_ratelimited_rq` | Global rate-limit rejections (no per-model breakdown) |
|
||
|
|
| LLM Latency p50/p95/p99 by Model | spanmetrics `duration_milliseconds_bucket` | End-to-end latency percentiles per model |
|
||
|
|
| Cumulative Request Count | spanmetrics `calls_total` | Total requests per model since start |
|
||
|
|
|
||
|
|
## Envoy Stats
|
||
|
|
|
||
|
|
For the rate-limit panel to work, Prometheus needs to scrape Envoy's admin stats endpoint.
|
||
|
|
The default config assumes Envoy's admin interface is at `host.docker.internal:9901`.
|
||
|
|
Adjust `prometheus.yaml` if your Envoy admin port differs.
|
||
|
|
|
||
|
|
## Span Attributes Used
|
||
|
|
|
||
|
|
These attributes are set by brightstaff's tracing instrumentation:
|
||
|
|
|
||
|
|
- `service.name` — `plano(llm)`, `plano(agent)`, `plano(orchestrator)`, `plano(filter)`, `plano(routing)`
|
||
|
|
- `llm.model` — model name (e.g., `gpt-4`, `claude-3-sonnet`)
|
||
|
|
- `agent_id` — agent identifier from the orchestrator
|
||
|
|
- `selection.listener` — listener that triggered agent selection
|