mysql5.7 迁移以及从库提升为主库

CHANGE MASTER TOMASTER_HOST='10.10.30.34', MASTER_PORT=3306,MASTER_USER='slave',MASTER_PASSWORD='slave',MASTER_LOG_FILE='mysql-bin.000148',MASTER_LOG_POS=154;从数据库变为主库stop slave;reset slave;reset master;从库变为刚才的主库（由从库变为主库的数据库）vim /etc/my.cnflog-bin=mysql-bin  #并重启数据库，主库开启binlog日志主库操作:show  master status主库操作:scp -r /var/lib/mysql/*   10.10.50.34:/var/lib/mysql/从库:chown  -R mysql.mysql   /var/lib/mysql/从库:systemctl restart  mysqld CHANGE MASTER TOMASTER_HOST='172.16.1.51', MASTER_PORT=3306,MASTER_USER='rep',MASTER_PASSWORD='123456',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=335;进入数据:start slave;中间报错：1.IO进程一直处于connnecting中  slave 用户的密码写错2.show slave  status;报错Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'解决办法：主库：flush logs；从库：stop slave；CHANGE MASTER TO MASTER_LOG_FILE='mysqld-bin.000011',MASTER_LOG_POS=106;start slave；