mysql 主从

• 创建用户，添加权限

  mysql> create user 'slave'@'192.168.137.3' identified by '123';
  Query OK, 0 rows affected (0.03 sec)
  mysql> grant replication slave on *.* to 'slave'@'192.168.137.3';
  Query OK, 0 rows affected (0.00 sec)

• 备份主服务器

  --flush-logs, -F

  开始导出之前刷新日志。

  --lock-tables,  -l

  开始导出前，锁定所有表。用READ  LOCAL锁定表以允许MyISAM表并行插入。对于支持事务的表例如InnoDB和BDB，--single-transaction是一个更好的选择，因为它根本不需要锁定表。

  sudo mysqldump -uroot -p test --single-transaction -F > /tmp/test.sql 

• 传递到从服务器

  scp /tmp/test.sql  192.168.1.111:/tmp/

• 修改配置文件，主从的server-id不一致

  log-bin = mysql-bin
  server-id = 1

• 从服务器配置，server-id = 2

  mysql> change master to master_host='106.15.35.91',master_port=3306, master_user='rpl',master_password='123',master_log_file='mysql-bin.000001',master_log_pos=154;
  
  mysql> start slave;
  mysql> show slave statusG;

  *************************** 1. row ***************************
  Slave_IO_State: Waiting for master to send event
  Master_Host: 1.1.1.1
  Master_User: rpl
  Master_Port: 3306
  Connect_Retry: 60
  Master_Log_File: mysql-bin.000001
  Read_Master_Log_Pos: 913
  Relay_Log_File: u18-relay-bin.000005
  Relay_Log_Pos: 320
  Relay_Master_Log_File: mysql-bin.000001
  Slave_IO_Running: Yes
  Slave_SQL_Running: Yes