metadata/service/server/local.yml

applications:
- mysql
parameters:
  mysql:
    server:
      enabled: true
      version: '5.5'
      force_encoding: utf8
      admin:
        user: ${_param:mysql_admin_user}
        password: ${_param:mysql_admin_password}
      bind:
        address: 127.0.0.1
        port: 3306
        protocol: tcp