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OpenTelemetry Collector Configuration

OTEL Collector configuration for TelemetryFlow Core observability.

Architecture

graph LR
    subgraph "Receivers"
        OTLP_GRPC[OTLP gRPC<br/>:4317]
        OTLP_HTTP[OTLP HTTP<br/>:4318]
        Prom_Scrape[Prometheus<br/>Self-Scrape]
    end
    
    subgraph "Processors"
        Batch[Batch<br/>10s timeout]
        MemLimit[Memory Limiter<br/>512MB]
        Attrs[Attributes<br/>Add env labels]
    end
    
    subgraph "Exporters"
        Debug[Debug<br/>Console]
        Jaeger[Jaeger<br/>:4317]
        PromExp[Prometheus<br/>:8889]
    end
    
    OTLP_GRPC --> Batch
    OTLP_HTTP --> Batch
    Prom_Scrape --> Batch
    
    Batch --> MemLimit
    MemLimit --> Attrs
    
    Attrs -->|Traces| Jaeger
    Attrs -->|Traces| Debug
    Attrs -->|Metrics| PromExp
    Attrs -->|Metrics| Debug
    Attrs -->|Logs| Debug
    
    style Batch fill:#fff4e1
    style MemLimit fill:#ffe1f5
    style Attrs fill:#e1f5ff
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Files

  • otel-collector-config.yaml - OTEL Collector configuration

Components

Receivers

  • OTLP: gRPC (4317) and HTTP (4318)
  • Prometheus: Self-scraping on port 8888

Processors

  • batch: Batches telemetry data
  • memory_limiter: Prevents OOM (512MB limit)
  • resourcedetection: Detects environment, system, docker
  • attributes: Enriches with environment labels

Exporters

  • prometheus: Exports metrics on port 8889
  • logging: Console output for debugging

Extensions

  • health_check: Port 13133
  • pprof: Port 1777
  • zpages: Port 55679

Endpoints

  • OTLP gRPC: http://localhost:4317
  • OTLP HTTP: http://localhost:4318
  • Prometheus metrics: http://localhost:8889/metrics
  • Health check: http://localhost:13133
  • zPages: http://localhost:55679/debug/tracez

Pipelines

  1. Traces: OTLP → memory_limiter → resourcedetection → batch → logging
  2. Metrics: OTLP/Prometheus → memory_limiter → resourcedetection → batch → prometheus/logging
  3. Logs: OTLP → memory_limiter → resourcedetection → batch → logging

Usage

# Test OTLP endpoint
curl -X POST http://localhost:4318/v1/traces \
  -H "Content-Type: application/json" \
  -d '{"resourceSpans":[]}'

# Check health
curl http://localhost:13133

# View metrics
curl http://localhost:8889/metrics