centos上Mariadb主从复制配置

一、环境

主服务器:

IP:192.168.0.14

OS:cenos7

mariadb version:5.5.56

从服务器：

IP:192.168.3.76

OS:cenos7

mariadb version:5.5.56

 

二、主服务器配置

#vi /etc/my.cnf.d/server.cnf

####/etc/my.cnf.d/server.cnf文件mysqld节修改#######

server-id=1
log_bin=master-bin
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
binlog_do_db=kovantestdb

重启数据库

#systemctl restart mariadb

 

增加备份账号

MariaDB [(none)]> grant replication slave,replication client on *.* to 'copy'@'%' identified by 'test123' ; 

刷新权限

MariaDB [(none)]> flush privileges ; 

显示master状态

MariaDB [(none)]> show master status \G ;

+-------------------+----------+--------------+---------------------------------------------+
| File              | Position | Binlog_Do_DB | Binlog_Ignore_DB                            |
+-------------------+----------+--------------+---------------------------------------------+
| master-bin.000001 | 58655043 | kovantestdb  | mysql,information_schema,performance_schema |
+-------------------+----------+--------------+---------------------------------------------+
1 row in set (0.00 sec)

 

三、从服务器配置

####/etc/my.cnf.d/server.cnf文件mysqld节修改#######

 

server-id=2
log_bin=master-bin

重启数据库

 

#systemctl restart mariadb

 

MariaDB [(none)]> stop slave;

 

MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST='192.168.0.14',MASTER_USER='copy',MASTER_PASSWORD='test123',MASTER_LOG_FILE='master-bin.000001',MASTER_LOG_POS=58655043 ;

 

MariaDB [(none)]> start slave;

 

MariaDB [(none)]> start slave;

 

MariaDB [(none)]> show slave status \G ;

*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.0.14
                  Master_User: copy
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: master-bin.000001
          Read_Master_Log_Pos: 59709420
               Relay_Log_File: mariadb-relay-bin.000002
                Relay_Log_Pos: 17585678
        Relay_Master_Log_File: master-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: 59709420
              Relay_Log_Space: 17585974
              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
1 row in set (0.00 sec)

ERROR: No query specified

 

 

四、测试

在主服务器的kovantestdb里做一些改动，然后去从服务器上查看是否也有相应的更新。