Mater: CentOS7.1 5.5.52-MariaDB 192.168.108.133
Slave: CentOS7.1 5.5.52-MariaDB 192.168.108.140
1.导出主服务数据，将主备初始数据同步
master:
//从master上导出需要同步的数据库信息 mysqldump -u*** -p*** --database test > test.sql //将master上的备份信息传输到slave上 scp /root/test.sql root@192.168.108.140:/opt/
slave:
//进入slave的数据库 mysql -u*** -p*** //清空test数据库 drop database test //导入master的test数据库信息 source /opt/test.sql
2.配置master和slave上的mysql数据库
master:
//修改master的my.cnf文件 vim /etc/my.cnf //master配置如下，在[mysqld]下添加如下配置 #log-bin server-id = 1 log_bin = master-bin expire_logs_days = 10 max_binlog_size = 100M binlog-do_db = test binlog_ignore_db = mysql //重启mysql数据库 service mysqld restart //如果安装的是mariadb可以重启mariadb systemctl restart mariadb.service
slave:
//修改slave的my.cnf文件 vim /etc/my.cnf //slave配置如下，在[mysqld]下添加如下配置 server-id = 2 //重启mysql数据库 service mysqld restart //如果安装的是mariadb可以重启mariadb systemctl restart mariadb.service
简单说明一下参数配置，保证主备server-id唯一。在master上需要开启mysql的binlog，log_bin=master_bin，指定binlog文件的名称。
3.创建一个复制用户，具有replication slave 权限，能保证slave能把master的数据同步过去
master:
grant replication slave on *.* to 'replication'@'192.168.108.140' identified by 'replication';
4.获取master的binlog位置
master：
//进入mysql数据库 mysql -u*** -p*** //设置读锁 flush tables with read lock; //获取mysql的binlog文件信息和偏移量 show master status; +-------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +-------------------+----------+--------------+------------------+ | master-bin.000010 | 3713 | test | mysql | +-------------------+----------+--------------+------------------+ 1 row in set (0.00 sec) //解锁 unlock tables;
5.设置备端数据库
//进入mysql数据库 mysql -u*** -p*** //停止slave stop slave; //设置对应master的binlog信息 MariaDB [(none)]> change master to -> master_host='192.168.108.133', -> master_user='replication', -> master_password='replication', -> master_log_file='master-bin.000010', -> master_log_pos=3713; //启动slave start slave;
6.查看备端状态
MariaDB [(none)]> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.108.133 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000010 Read_Master_Log_Pos: 3881 Relay_Log_File: mariadb-relay-bin.000002 Relay_Log_Pos: 698 Relay_Master_Log_File: master-bin.000010 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: 3881 Relay_Log_Space: 994 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