OTel Collector carbon receiver with Prometheus remote write exporter.

docker-compose.yml

version: '3.8'
services:
  prometheus:
    image: prom/prometheus
    ports:
      - 9090:9090
    volumes:
      - ./prometheus.yml:/prometheus/prometheus.yml
    command:
      - '--web.enable-remote-write-receiver'

  otel-collector:
    image: otel/opentelemetry-collector-contrib
    volumes:
      - ./otel-collector-config.yaml:/etc/otelcol-contrib/config.yaml
    ports:
      - 8888:8888 # Prometheus metrics exposed by the Collector
      - 2003:2003 # carbon receiver

otel-collector-config.yml

receivers:
  carbon:
    endpoint: 0.0.0.0:2003
    transport: tcp

processors:
  memory_limiter:
    check_interval: 1s
    limit_percentage: 70
    spike_limit_percentage: 20
  batch: ~

exporters:
  debug: ~

  prometheusremotewrite:
    endpoint: "http://prometheus:9090/api/v1/write"
    tls:
      insecure: true

extensions:
  health_check: ~
  zpages: ~

service:
  extensions:
    - health_check
    - zpages

  pipelines:
    metrics:
      receivers:
        - carbon
      processors:
        - memory_limiter
        - batch
      exporters:
        - debug
        - prometheusremotewrite

prometheus.yml

global:
  scrape_interval: 15s # By default, scrape targets every 15 seconds.
  evaluation_interval: 15s # By default, scrape targets every 15 seconds.

scrape_configs:
  - job_name: "prometheus"
    static_configs:
      - targets: ["localhost:9090"]
  - job_name: "otel-collector"
    static_configs:
      - targets: ["otel-collector:8888"]