docker-compose.cluster.yml

# Multinode cluster setup — Redis Pub/Sub transport (3 nodes + Redis).
#
# Usage:
#   docker compose -f docker-compose.cluster.yml up
#
# Set MERIDIAN_SIGNING_KEY to the same value on all nodes (shared secret).
# All nodes expose their public API on different host ports (3000, 3001, 3002).
# Put an L4/L7 load balancer in front of them for production.

services:
  redis:
    image: redis:7-alpine
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 3s
      retries: 5

  meridian-1:
    build:
      context: .
      args:
        FEATURES: cluster
    ports:
      - "3000:3000"
    volumes:
      - meridian_data_1:/data
    environment:
      MERIDIAN_SIGNING_KEY: ${MERIDIAN_SIGNING_KEY:?MERIDIAN_SIGNING_KEY is required}
      REDIS_URL: redis://redis:6379
      MERIDIAN_NODE_ID: "1"
      MERIDIAN_BIND: "0.0.0.0:3000"
    depends_on:
      redis:
        condition: service_healthy
    restart: unless-stopped

  meridian-2:
    build:
      context: .
      args:
        FEATURES: cluster
    ports:
      - "3001:3000"
    volumes:
      - meridian_data_2:/data
    environment:
      MERIDIAN_SIGNING_KEY: ${MERIDIAN_SIGNING_KEY:?MERIDIAN_SIGNING_KEY is required}
      REDIS_URL: redis://redis:6379
      MERIDIAN_NODE_ID: "2"
      MERIDIAN_BIND: "0.0.0.0:3000"
    depends_on:
      redis:
        condition: service_healthy
    restart: unless-stopped

  meridian-3:
    build:
      context: .
      args:
        FEATURES: cluster
    ports:
      - "3002:3000"
    volumes:
      - meridian_data_3:/data
    environment:
      MERIDIAN_SIGNING_KEY: ${MERIDIAN_SIGNING_KEY:?MERIDIAN_SIGNING_KEY is required}
      REDIS_URL: redis://redis:6379
      MERIDIAN_NODE_ID: "3"
      MERIDIAN_BIND: "0.0.0.0:3000"
    depends_on:
      redis:
        condition: service_healthy
    restart: unless-stopped

volumes:
  meridian_data_1:
  meridian_data_2:
  meridian_data_3: