MySql数据库的主从配置

主服务器 192.168.7.182 Centos6.5 MYSQL5.6.10

从服务器 192.168.112.7 Centos6.5 MYSQL5.6.10

1. 主服务器配置(192.168.7.182)

vi /etc/my.cnf

[mysqld]
server-id=1
log-bin=mysql-bin
binlog-do-db=hello 需要同步的数据库名(不用提前创建)

保存重启mysql服务

service mysql restart

主服务器配置完毕

2.  查看主服务器信息

mysql> show master status\G
*************************** 1. row ***************************
File: mysql-bin.000002
Position: 120
Binlog_Do_DB: hello
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)

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3. 从服务器配置(192.168.112.7)

vi /etc/my.cnf
加上
[mysqld]
server-id=2
log-bin=log

保存重启mysql服务

service mysql restart

从服务器配置完毕

4. 配置完了就需要建立主从服务器之间的关系

mysql>change master to
master_host = '192.168.7.182',
master_user = 'root',
master_port=3306,
master_password='123456', 
master_log_file = 'mysql-bin.000002', （和主服务器 File 参数对应）
master_log_pos=120; (和主服务器 Position 参数对应)

5. 查看从服务器状态

mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.7.182
Master_User: root
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 262
Relay_Log_File: liuchao-relay-bin.000003
Relay_Log_Pos: 425
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 262
Relay_Log_Space: 600
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: f242269d-cbaf-11e4-b866-000c29f4cbd9
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)

6. 配置完了再重启一下mysql服务

service mysql restart

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7.测试一下

在192.168.7.182(主)服务器上创建hello数据库，会发现192.168.112.7(从)服务器上也会出现在hello数据库

在192.168.7.182(主)服务器上对hello数据库的操作都会同步到192.168.112.7(从)服务器上

8.配置的时候注意Mysql的版本，不同的版本配置不同