docker-compose.yml

version: '3.9'

networks:
  overlay:

services:
  mysql_master:
    image: mysql:5.7
    platform: linux/x86_64
    environment:
      MYSQL_DATABASE: ${REPLICA_DB}
      MYSQL_USER: ${REPLICA_USER}
      MYSQL_PASSWORD: ${REPLICA_PASSWD}
      MYSQL_ROOT_PASSWORD: ${MASTER_ROOT_PASSWD}
      MYSQL_LOWER_CASE_TABLE_NAMES: 0
    healthcheck:
      test: mysqladmin ping -h 127.0.0.1 -u $$MYSQL_USER --password=$$MYSQL_PASSWORD
      start_period: 5s
      interval: 5s
      timeout: 5s
      retries: 55
    volumes:
      - ./etc/master.cnf:/etc/mysql/conf.d/master.cnf
      - ./init.db/master:/docker-entrypoint-initdb.d
      - ./.data/master:/var/lib/mysql
    ports:
      - "3302:3306"
    networks:
      - overlay

  mysql_replica:
    build:
      context: replica
    environment:
      MASTER_ROOT_PASSWD: ${MASTER_ROOT_PASSWD}
      MYSQL_DATABASE: ${REPLICA_DB}
      MYSQL_USER: ${REPLICA_USER}
      MYSQL_PASSWORD: ${REPLICA_PASSWD}
      MYSQL_ROOT_PASSWORD: ${REPLICA_ROOT_PASSWD}
      MYSQL_LOWER_CASE_TABLE_NAMES: 0
    healthcheck:
      test: mysqladmin ping -h 127.0.0.1 -u $$MYSQL_USER --password=$$MYSQL_PASSWORD
      start_period: 5s
      interval: 5s
      timeout: 5s
      retries: 55
    volumes:
      - ./etc/replica.cnf:/etc/mysql/conf.d/replica.cnf
      - ./init.db/replica:/docker-entrypoint-initdb.d
      - ./.data/replica:/var/lib/mysql
    ports:
      - "3301:3306"
    networks:
      - overlay
    depends_on:
      mysql_master:
        condition: service_healthy