1、因安全要求,需要修改mysql同步用户repl的密码。在主库修改完后,从库最佳修改同步用户密码的方式 D change master to master_host='主库IP',master_user='repl',master_password='new password',master_log_file='binlog.020',master_log_pos='136';#其中master_log_file是show slave status查询的Master_Log_File的值,master_log_pos是Read_Master_Log_Pos的值 B change master to master_host='主库IP',master_user='repl',master_password='new password',master_log_file='binlog.020',master_log_pos='154';#其中master_log_file是show slave status查询的Relay_Master_Log_File的值,master_log_pos是Exec_Master_Log_Pos的值 C change master to master_user='repl',master_password='new password'; change master to master_password='new password';