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docs(telemetry): update docs to reflect the telemetry re-architecture

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docs/docs/building_applications/telemetry.mdx
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@ -10,203 +10,34 @@ import TabItem from '@theme/TabItem';
# Telemetry
The Llama Stack uses OpenTelemetry to provide comprehensive tracing, metrics, and logging capabilities.
The preferred way to instrument llama stack is with OpenTelemetry. Llama Stack enriches the data
collected by OpenTelemetry to capture helpful information about the performance and behavior of your
application. Here is an example of how to forward your telemtry to an OTLP collector from llama stack.
```sh
export OTEL_EXPORTER_OTLP_ENDPOINT="http://127.0.0.1:4318"
export OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf
export OTEL_SERVICE_NAME="llama-stack-server"
## Automatic Metrics Generation
uv pip install opentelemetry-distro opentelemetry-exporter-otlp
uv run opentelemetry-bootstrap -a requirements | uv pip install --requirement -
Llama Stack automatically generates metrics during inference operations. These metrics are aggregated at the **inference request level** and provide insights into token usage and model performance.
### Available Metrics
The following metrics are automatically generated for each inference request:
| Metric Name | Type | Unit | Description | Labels |
|-------------|------|------|-------------|--------|
| `llama_stack_prompt_tokens_total` | Counter | `tokens` | Number of tokens in the input prompt | `model_id`, `provider_id` |
| `llama_stack_completion_tokens_total` | Counter | `tokens` | Number of tokens in the generated response | `model_id`, `provider_id` |
| `llama_stack_tokens_total` | Counter | `tokens` | Total tokens used (prompt + completion) | `model_id`, `provider_id` |
### Metric Generation Flow
1. **Token Counting**: During inference operations (chat completion, completion, etc.), the system counts tokens in both input prompts and generated responses
2. **Metric Construction**: For each request, `MetricEvent` objects are created with the token counts
3. **Telemetry Logging**: Metrics are sent to the configured telemetry sinks
4. **OpenTelemetry Export**: When OpenTelemetry is enabled, metrics are exposed as standard OpenTelemetry counters
### Metric Aggregation Level
All metrics are generated and aggregated at the **inference request level**. This means:
- Each individual inference request generates its own set of metrics
- Metrics are not pre-aggregated across multiple requests
- Aggregation (sums, averages, etc.) can be performed by your observability tools (Prometheus, Grafana, etc.)
- Each metric includes labels for `model_id` and `provider_id` to enable filtering and grouping
### Example Metric Event
```python
MetricEvent(
trace_id="1234567890abcdef",
span_id="abcdef1234567890",
metric="total_tokens",
value=150,
timestamp=1703123456.789,
unit="tokens",
attributes={
"model_id": "meta-llama/Llama-3.2-3B-Instruct",
"provider_id": "tgi"
},
)
uv run opentelemetry-instrument llama stack run run.yaml
```
## Telemetry Sinks
Choose from multiple sink types based on your observability needs:
### Known issues
<Tabs>
<TabItem value="opentelemetry" label="OpenTelemetry">
Some database instrumentation libraries have a known bug where spans get wrapped twice, or do not get connected to a trace.
To prevent this, you can disable database specific tracing, and rely just on the sqlalchemy tracing. If you are using
sqlite3, you can disable it like this.
Send events to an OpenTelemetry Collector for integration with observability platforms:
**Use Cases:**
- Visualizing traces in tools like Jaeger
- Collecting metrics for Prometheus
- Integration with enterprise observability stacks
**Features:**
- Standard OpenTelemetry format
- Compatible with all OpenTelemetry collectors
- Supports both traces and metrics
</TabItem>
<TabItem value="console" label="Console">
Print events to the console for immediate debugging:
**Use Cases:**
- Development and testing
- Quick debugging sessions
- Simple logging without external tools
**Features:**
- Immediate output visibility
- No setup required
- Human-readable format
</TabItem>
</Tabs>
## Configuration
### Meta-Reference Provider
Currently, only the meta-reference provider is implemented. It can be configured to send events to multiple sink types:
```yaml
telemetry:
- provider_id: meta-reference
provider_type: inline::meta-reference
config:
service_name: "llama-stack-service"
sinks: ['console', 'otel_trace', 'otel_metric']
otel_exporter_otlp_endpoint: "http://localhost:4318"
```sh
export OTEL_PYTHON_DISABLED_INSTRUMENTATIONS="sqlite3"
```
### Environment Variables
Configure telemetry behavior using environment variables:
- **`OTEL_EXPORTER_OTLP_ENDPOINT`**: OpenTelemetry Collector endpoint (default: `http://localhost:4318`)
- **`OTEL_SERVICE_NAME`**: Service name for telemetry (default: empty string)
- **`TELEMETRY_SINKS`**: Comma-separated list of sinks (default: `[]`)
### Quick Setup: Complete Telemetry Stack
Use the automated setup script to launch the complete telemetry stack (Jaeger, OpenTelemetry Collector, Prometheus, and Grafana):
```bash
./scripts/telemetry/setup_telemetry.sh
```
This sets up:
- **Jaeger UI**: http://localhost:16686 (traces visualization)
- **Prometheus**: http://localhost:9090 (metrics)
- **Grafana**: http://localhost:3000 (dashboards with auto-configured data sources)
- **OTEL Collector**: http://localhost:4318 (OTLP endpoint)
Once running, you can visualize traces by navigating to [Grafana](http://localhost:3000/) and login with login `admin` and password `admin`.
## Querying Metrics
When using the OpenTelemetry sink, metrics are exposed in standard format and can be queried through various tools:
<Tabs>
<TabItem value="prometheus" label="Prometheus Queries">
Example Prometheus queries for analyzing token usage:
```promql
# Total tokens used across all models
sum(llama_stack_tokens_total)
# Tokens per model
sum by (model_id) (llama_stack_tokens_total)
# Average tokens per request over 5 minutes
rate(llama_stack_tokens_total[5m])
# Token usage by provider
sum by (provider_id) (llama_stack_tokens_total)
```
</TabItem>
<TabItem value="grafana" label="Grafana Dashboards">
Create dashboards using Prometheus as a data source:
- **Token Usage Over Time**: Line charts showing token consumption trends
- **Model Performance**: Comparison of different models by token efficiency
- **Provider Analysis**: Breakdown of usage across different providers
- **Request Patterns**: Understanding peak usage times and patterns
</TabItem>
<TabItem value="otlp" label="OpenTelemetry Collector">
Forward metrics to other observability systems:
- Export to multiple backends simultaneously
- Apply transformations and filtering
- Integrate with existing monitoring infrastructure
</TabItem>
</Tabs>
## Best Practices
### 🔍 **Monitoring Strategy**
- Use OpenTelemetry for production environments
- Set up alerts on key metrics like token usage and error rates
### 📊 **Metrics Analysis**
- Track token usage trends to optimize costs
- Monitor response times across different models
- Analyze usage patterns to improve resource allocation
### 🚨 **Alerting & Debugging**
- Set up alerts for unusual token consumption spikes
- Use trace data to debug performance issues
- Monitor error rates and failure patterns
### 🔧 **Configuration Management**
- Use environment variables for flexible deployment
- Ensure proper network access to OpenTelemetry collectors
## Related Resources
- **[Agents](./agent)** - Monitoring agent execution with telemetry
- **[Evaluations](./evals)** - Using telemetry data for performance evaluation
- **[Getting Started Notebook](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)** - Telemetry examples and queries
- **[OpenTelemetry Documentation](https://opentelemetry.io/)** - Comprehensive observability framework
- **[Jaeger Documentation](https://www.jaegertracing.io/)** - Distributed tracing visualization