docker-stack.yml

version: '3.7'
# docker-stack file for docker swarm and clustered deployments
#
#    docker stack up -c docker-stack.yml wordbook
#

services:
  app:
    image: 1p22geo/wordbook
    deploy:
      replicas: 3 # Change the number based on your requirements
    ports:
      - "3000:3000"
    environment:
      - MONGO_URI=mongodb://mongo1:27017,mongo2:27018,mongo3:27019/?replicaSet=rs0
      - OTEL_URI=http://otel-collector:4317
    depends_on:
      - mongodb
      - otel-collector
    volumes:
      - uploads:/app/uploads
    extra_hosts:
      - "host.docker.internal:host-gateway"

  mongo1:
    image: mongo:7.0
    command: ["--replSet", "rs0", "--bind_ip_all", "--port", "27017"]
    ports:
      - 27017:27017
    extra_hosts:
      - "host.docker.internal:host-gateway"
    healthcheck:
      test: echo "try { rs.status() } catch (err) { rs.initiate({_id:'rs0',members:[{_id:0,host:'host.docker.internal:27017',priority:1},{_id:1,host:'host.docker.internal:27018',priority:0.5},{_id:2,host:'host.docker.internal:27019',priority:0.5}]}) }" | mongosh --port 27017 --quiet
      interval: 5s
      timeout: 30s
      start_period: 0s
      retries: 30
    volumes:
      - "mongo1_data:/data/db"
      - "mongo1_config:/data/configdb"

  mongo2:
    image: mongo:7.0
    command: ["--replSet", "rs0", "--bind_ip_all", "--port", "27018"]
    ports:
      - 27018:27018
    extra_hosts:
      - "host.docker.internal:host-gateway"
    volumes:
      - "mongo2_data:/data/db"
      - "mongo2_config:/data/configdb"

  mongo3:
    image: mongo:7.0
    command: ["--replSet", "rs0", "--bind_ip_all", "--port", "27019"]
    ports:
      - 27019:27019
    extra_hosts:
      - "host.docker.internal:host-gateway"
    volumes:
      - "mongo3_data:/data/db"
      - "mongo3_config:/data/configdb"

  jaeger-all-in-one:
    image: jaegertracing/all-in-one:latest
    deploy:
      replicas: 1
    ports:
      - "16686:16686"
      - "14268"
      - "14250"

  zipkin-all-in-one:
    image: openzipkin/zipkin:latest
    deploy:
      replicas: 1
    ports:
      - "9411:9411"

  otel-collector:
    image: 1p22geo/wordbook-otel
    deploy:
      replicas: 3
    command: ["--config=/etc/otel-collector-config.yaml"]
    ports:
      - "1888"   # pprof extension
      - "8888"   # Prometheus metrics exposed by the collector
      - "8889"   # Prometheus exporter metrics
      - "13133"  # health_check extension
      - "4317"   # OTLP gRPC receiver
      - "4318"   # OTLP HTTP receiver
      - "55679"  # zpages extension
    depends_on:
      - jaeger-all-in-one
      - zipkin-all-in-one

networks:
  main:
    driver: overlay

volumes:
  uploads:
  mongo1_data:
  mongo2_data:
  mongo3_data:
  mongo1_config:
  mongo2_config:
  mongo3_config: