mysql 主从

                                                   MySQL 数据同步一主多从

 

Master 主服务器的ip：192.168.1.210

Slave1 从服务器的ip：192.168.1.216

Slave2 从服务器的ip：192.168.1.217

 

一、master主服务器上设置：

1.文件配置修改my.cnf配置文件

[mysqld]  

加入下面两行，设置

log-bin = mysql-bin.log

server-id = 1

#binlog-do-db=juwang  ?关于复制的数据库一定要分开写。不能写成binlog-do-db=juwang,test。这是无效的，两个数据库一个都不会复制。

 

#binlog-do-db=test

 

#binlog-ignore-db=mysql //避免同步mysql用户配置，以免不必要的麻烦（如果要选择数据库则在下面的两个slave都要做相应配置）

重启mysql服务。

#binlog-do-db=Industry       //只同步Industry数据库

#binlog-ignore-db=mysql    //避免同步mysql用户配置，以免不必要的麻烦

#binlog-ignore-db=performance_schema

#binlog-ignore-db=information_schema

2.权限设置 允许用户user从ip为192.168.1.216、192.168.1.217的主机连接到mysql服务器（master），并使用password作为密码

下面涉及到，从服务器的ip、登陆用户名、登陆密码。

下面用户名是xiaoxg，密码是123456

[root@mysql01 ~]# mysql -uxiaoxg -p123456

mysql> GRANT ALL PRIVILEGES ON *.* TO 'xiaoxg'@'192.168.1.216' IDENTIFIED BY '123456';

mysql> GRANT ALL PRIVILEGES ON *.* TO 'xiaoxg'@'192.168.1.217' IDENTIFIED BY '123456';

mysql> flush privileges;

mysql> show master status;

+------------------+----------+--------------+------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |

+------------------+----------+--------------+------------------+

| mysql-bin.000001 |     106  |              |                  |

+------------------+----------+--------------+------------------+

1 row in set (0.00 sec)

二、slave1从服务器上设置：

1.文件配置修改my.cnf配置文件

[mysqld]  

加入下面两行，设置

log-bin = mysql-bin.log

server-id = 2

2.在从服务器上，关闭slave线程

Mysql>stop slave;

3.在从服务器做相应设置指定复制使用的用户，主数据库服务器的ip、端口、以及开始执行复制的日志文件和位置等。

mysql> change master to master_host='192.168.1.210', master_port=3306, master_user='xiaoxg', master_password='123456', master_log_file='mysql-bin.000001', master_log_pos=106;

4.在从服务器上，启动slave线程

Mysql >start slave;

mysql> show slave status\G;

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 192.168.1.210

                  Master_User: xiaoxg

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 6353

               Relay_Log_File: mysqld-relay-bin.000003

                Relay_Log_Pos: 251

        Relay_Master_Log_File: mysql-bin.000001

             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: 6353

              Relay_Log_Space: 6799

              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:

1 row in set (0.00 sec)

ERROR:

No query specified

三、slave2从服务器上设置：

1.文件配置修改my.cnf配置文件

[mysqld]  

加入下面两行，设置

log-bin = mysql-bin.log

server-id = 3

2.在从服务器上，关闭slave线程

Mysql>stop slave;

3.在从服务器做相应设置指定复制使用的用户，主数据库服务器的ip、端口、以及开始执行复制的日志文件和位置等。

mysql> change master to master_host='192.168.1.210', master_port=3306, master_user='xiaoxg', master_password='123456', master_log_file='mysql-bin.000001', master_log_pos=106;

4.在从服务器上，启动slave线程

Mysql >start slave;

mysql> show slave status\G;

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 192.168.1.210

                  Master_User: xiaoxg

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 6353

               Relay_Log_File: mysqld-relay-bin.000003

                Relay_Log_Pos: 251

        Relay_Master_Log_File: mysql-bin.000001

             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: 6353

              Relay_Log_Space: 6799

              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:

1 row in set (0.00 sec)

ERROR:

No query specified