cased-agent/docker-compose.yaml at main · cased/cased-agent · GitHub

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# Local development setup for cased-agent
# Runs the agent in a Linux container with cgroup access

services:
  # The metrics agent
  agent:
    build:
      context: .
      dockerfile: Dockerfile
    environment:
      - CASED_API_ENDPOINT=http://host.docker.internal:8000
      - CASED_API_KEY=${CASED_API_KEY:-bFTw2c00znFGnolNCXqsmuAjjQ8OaXBa}
      - CASED_CLUSTER_ID=local-docker
      - NODE_NAME=docker-desktop
      - ENABLE_OTEL=true
    volumes:
      # Mount host cgroups (works on Docker Desktop for Mac/Windows)
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
      # Mount /proc for node-level metrics
      - /proc:/host/proc:ro
    ports:
      # OpenTelemetry receiver port
      - "4318:4318"
    # Run every 5 seconds for local dev
    command: ["--interval=5s", "--batch-size=50", "--proc-path=/host/proc", "--enable-otel"]
    extra_hosts:
      - "host.docker.internal:host-gateway"
    # Privileged mode required for eBPF (optional - only needed with --enable-ebpf)
    # privileged: true
    cap_add:
      - SYS_ADMIN
      - SYS_PTRACE

  # A sample workload to generate metrics
  workload:
    image: alpine:3.19
    command: |
      sh -c "
        echo 'Starting sample workload...'
        while true; do
          # CPU stress
          dd if=/dev/zero of=/dev/null bs=1M count=100 2>/dev/null
          # Memory allocation
          head -c 10M /dev/urandom > /tmp/test 2>/dev/null
          rm -f /tmp/test
          sleep 2
        done
      "
    deploy:
      resources:
        limits:
          cpus: '0.5'
          memory: 128M

  # Sample web service with OTel tracing
  web:
    image: python:3.12-slim
    environment:
      - OTEL_ENDPOINT=http://agent:4318/v1/traces
    volumes:
      - ./demo_web.py:/app/demo_web.py:ro
    command: >
      sh -c "pip install -q opentelemetry-api opentelemetry-sdk opentelemetry-exporter-otlp-proto-http && python /app/demo_web.py"
    ports:
      - "8081:8080"
    deploy:
      resources:
        limits:
          cpus: '0.25'
          memory: 128M

  # Traffic generator to hit the web service
  traffic:
    image: alpine:3.19
    depends_on:
      - web
    command: |
      sh -c "
        apk add --no-cache curl
        sleep 10
        echo 'Starting traffic generator...'
        while true; do
          curl -s http://web:8080/ > /dev/null
          curl -s http://web:8080/api/users > /dev/null
          curl -s http://web:8080/api/orders > /dev/null
          curl -s http://web:8080/health > /dev/null
          sleep 0.5
        done
      "