Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server ids; these ids must be different for replication to work (or the --replicate-same-server-id option must be used on slave but this does not always make sense; please check the manual before using it).

? 修改配置文件 sudo vim /usr/my.cnf
? 当时配置从机的时候没改id，应该主机id是1，从机是2

? 然后重启MySQL服务

sudo service mysql restart

? 问题解决!