已经有一套主从mysql,新增两个slave主库Server version: 5.6.22-log MySQL Community Server (GPL)旧从库Server version: 5.6.28-log MySQL Community Server (GPL) 新增SLAVE 1: Server version: 5.6.22-log MySQL Community Server (GPL)新增SLAVE 2: Server version: 5.7.10-log MySQL Co