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1首先设置主数据库
修改配置文件中
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# 日志文件名 |
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log-bin = /var/log/mysql/mysql-bin.log |
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# 主数据库端ID号 |
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server-id = 1 |
2并查看配置文件中，确保已经被注释，否则即赋予账号远程登录的账号也无法登录成功，会提示：解决ERROR 2003 (HY000): Can’t connect to MySQL
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#bind-address = 127.0.0.1 |
3重启mysql服务器，然后新建账户并赋予远程登录的权限。
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# 创建slave帐号slave_account，密码sa |
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mysql>grant replication slave on *.* to 'slave_account'@'%' identified by 'sa'; |
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# 更新数据库权限 |
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mysql>flush privileges; |
4查看master的状态
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mysql> show master status; |
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+------------------+----------+--------------+------------------+ |
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| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | |
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+------------------+----------+--------------+------------------+ |
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| mysql-bin.000001 | 196 | | | |
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+------------------+----------+--------------+------------------+ |
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1 row in set |
到这里，请不要再操作master数据库，直到从数据库配置完成。
5修改slave数据库配置文件
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# 从数据库端ID号 |
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server-id =2 |
6执行同步命令
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# 执行同步命令，设置主数据库ip，同步帐号密码，同步位置 |
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mysql>change master to master_host='192.168.137.8',master_user='slave_account',master_password='sa',master_log_file='mysql-bin.000001',master_log_pos=196; |
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# 开启同步功能 |
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mysql>start slave; |
7查看slave数据库的状态
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mysql> show slave status\G; |
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*************************** 1. row *************************** |
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Slave_IO_State: Waiting for master to send event |
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Master_Host: 192.168.137.8 |
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Master_User: slave_account |
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Master_Port: 3306 |
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Connect_Retry: 60 |
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Master_Log_File: mysql-bin.000001 |
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Read_Master_Log_Pos: 291 |
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Relay_Log_File: mysqld-relay-bin.000002 |
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Relay_Log_Pos: 437 |
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Relay_Master_Log_File: mysql-bin.000001 |
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Slave_IO_Running: Yes |
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Slave_SQL_Running: Yes |
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Replicate_Do_DB: |
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Replicate_Ignore_DB: |
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Replicate_Do_Table: |
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Replicate_Ignore_Table: |
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Replicate_Wild_Do_Table: |
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Replicate_Wild_Ignore_Table: |
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Last_Errno: 0 |
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Last_Error: |
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Skip_Counter: 0 |
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Exec_Master_Log_Pos: 291 |
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Relay_Log_Space: 594 |
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Until_Condition: None |
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Until_Log_File: |
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Until_Log_Pos: 0 |
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Master_SSL_Allowed: No |
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Master_SSL_CA_File: |
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Master_SSL_CA_Path: |
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Master_SSL_Cert: |
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Master_SSL_Cipher: |
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Master_SSL_Key: |
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Seconds_Behind_Master: 0 |
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Master_SSL_Verify_Server_Cert: No |
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Last_IO_Errno: 0 |
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Last_IO_Error: |
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Last_SQL_Errno: 0 |
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Last_SQL_Error: |
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Replicate_Ignore_Server_Ids: |
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Master_Server_Id: 1 |
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1 row in set (0.00 sec) |
到这里主从数据库已经可以同步了，在主数据库的操作会自动同步到从数据库。