MariaDB replication + phpmyadmin

compose.yml

# https://github.com/MariaDB/mariadb-docker/blob/master/examples/compose-replication.yml

version: "3"
services:
  master:
    image: mariadb:latest
    command: --log-bin --log-basename=mariadb
    environment:
      - MARIADB_ROOT_PASSWORD=password
      - MARIADB_USER=testuser
      - MARIADB_PASSWORD=password
      - MARIADB_DATABASE=testdb
      - MARIADB_REPLICATION_USER=repl
      - MARIADB_REPLICATION_PASSWORD=replicationpass
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
      interval: 10s
      timeout: 5s
      retries: 3
    volumes:
      - ./mariadbdata:/var/lib/mysql

  replica:
    image: mariadb:latest
    command: --server-id=2 --log-basename=mariadb
    environment:
      - MARIADB_ROOT_PASSWORD=password
      - MARIADB_MASTER_HOST=master
      - MARIADB_REPLICATION_USER=repl
      - MARIADB_REPLICATION_PASSWORD=replicationpass
      - MARIADB_HEALTHCHECK_GRANTS=REPLICA MONITOR
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--replication_io", "--replication_sql", "--replication_seconds_behind_master=1", "--replication"]
      interval: 10s
      timeout: 5s
      retries: 3
    depends_on:
      master:
        condition: service_healthy

  phpmyadmin:
    image: phpmyadmin
    restart: always
    ports:
      - 8080:80
    # https://github.com/phpmyadmin/docker#environment-variables-summary
    environment:
      - PMA_ARBITRARY=1
      - PMA_HOSTS=master,replica
      - PMA_USER=root
      - PMA_PASSWORD=password