Mysql_数据库实时备份_linux

 
步骤一：
主机： 182.2.209.67
Mysql –uroot
GRANT REPLICATION SLAVE  ON  *.*   TO   backup@'182.2.209.23'   IDENTIFIED   BY '123123' ;
flush privileges;
 
备机： 182.2.209.23
Mysql –uroot
GRANT   REPLICATION   SLAVE   ON   *.*   TO   backup@'182.2.209.67'   IDENTIFIED   BY '123123' ;
flush privileges;
 
步骤二：　
将主机的ais数据导入备机,保持主备机数据库的一致性
 
主机： 
Mysqldump - -add-drop-table  -uroot ais>ais.sql
把ais.sql传到备份机（182.2.209.23）一个目录下
备机：　进入传入主机数据的目录下，执行
mysql -uroot ais<ais.sql
 
步骤三：
 
主机：
修改/etc/my.cnf
 
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-bin
server-id=1
binlog-do-db=ais
#master-host=182.2.209.23
#master-user=backup
#master-password='123123'
#master-port=3306
#master-connect-retry=20
#replicate-do-db=ais    
[mysql.server]
user=mysql
basedir=/var/lib
[safe_mysqld]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
 
说明：如果配置双向复制，需要把注释掉的打开
 
备机：
修改/etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-bin
server-id=2
binlog-do-db=ais
master-host=182.2.209.67
master-user=backup
master-password='123123'
master-port=3306
master-connect-retry=20
replicate-do-db=ais    
[mysql.server]
user=mysql
basedir=/var/lib
[safe_mysqld]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
 
步骤四：
 
主机：
用root用户执行：
service mysql restart
mysql -uroot
reset master;
show master status;
-----------------------------------------------------------------------------------------
|File         |Position  |    Binlog_do_db |    Binlog_ignore_db  |
-----------------------------------------------------------------------------------------
|HP-bin.001   | 79      | ais              |                    |
-----------------------------------------------------------------------------------------
退出数据库
 
备机：
service mysql restart
mysql -uroot
slave stop;
show slave status;  // Slave_IO_Running=NO,Slave_SQL_Running=NO 表示同步已经关闭了
+----------------+-------------+-------------+---------------+-----------------+
---------------------+--------------------+---------------+---------------------
--+------------------+-------------------+-----------------+--------------------
-+------------+------------+--------------+---------------------+---------------
--+
| Master_Host    | Master_User | Master_Port | Connect_retry | Master_Log_File |
 Read_Master_Log_Pos | Relay_Log_File     | Relay_Log_Pos | Relay_Master_Log_Fil
e | Slave_IO_Running | Slave_SQL_Running | Replicate_do_db | Replicate_ignore_db
 | Last_errno | Last_error | Skip_counter | Exec_master_log_pos | Relay_log_spac
e |
+----------------+-------------+-------------+---------------+-----------------+
---------------------+--------------------+---------------+---------------------
--+------------------+-------------------+-----------------+--------------------
-+------------+------------+--------------+---------------------+---------------
--+
| 182.2.209.67  | backup      | 3306        | 20            | HP-bin.001      |
 79                  | yyxt-relay-bin.001 | 4             | HP-bin.001
  | No               | No                | ais             |
 | 0          |            | 0            | 79                  | 4
  |
+----------------+-------------+-------------+---------------+-----------------+
---------------------+--------------------+---------------+---------------------
--+------------------+-------------------+-----------------+--------------------
-+------------+------------+--------------+---------------------+---------------
--+
CHANGE MASTER TO
>MASTER_HOST='182.2.209.67',
>MASTER_USER='backup',
>MASTER_PASSWORD='123123',
>MASTER_LOG_FILE='HP-bin.001'
>MASTER_LOG_POS=79;
>quit
 
 
步骤五：
主机：　重新启动mysql
service mysql restart
 
备机：　重新启动mysql
service mysql restart
 
$$$$$$$$$$$$$$$$$$$$$此部分内容供查看核对使用$$$$$$$$$$$$$$$$$$$$$$$$$
主机：
mysql -uroot
show master status;
 
----------------------------------------------------------------
|File         |Position|    Binlog_do_db   |    Binlog_ignore_db|
----------------------------------------------------------------
|HP-bin.001   | 79     | ais               |                    |
----------------------------------------------------------------
 
备机：
mysql -uroot
show slave status;  查看Slave_IO_Running | Slave_SQL_Running |对应的值是否是YES,如果不是YES,执行slave start，打开同步
 
+----------------+-------------+-------------+---------------+-----------------+
---------------------+--------------------+---------------+---------------------
--+------------------+-------------------+-----------------+--------------------
-+------------+------------+--------------+---------------------+---------------
--+
| Master_Host    | Master_User | Master_Port | Connect_retry | Master_Log_File |
 Read_Master_Log_Pos | Relay_Log_File     | Relay_Log_Pos | Relay_Master_Log_Fil
e | Slave_IO_Running | Slave_SQL_Running | Replicate_do_db | Replicate_ignore_db
 | Last_errno | Last_error | Skip_counter | Exec_master_log_pos | Relay_log_spac
e |
+----------------+-------------+-------------+---------------+-----------------+
---------------------+--------------------+---------------+---------------------
--+------------------+-------------------+-----------------+--------------------
-+------------+------------+--------------+---------------------+---------------
--+
| 192.168.50.109 | backup      | 3306        | 20            | HP-bin.001      |
 79                  | yyxt-relay-bin.001 | 4             | HP-bin.001
  | YES              | YES                | ais             |
 | 0          |            | 0            | 79                  | 4
  |
+----------------+-------------+-------------+---------------+-----------------+
---------------------+--------------------+---------------+---------------------
--+------------------+-------------------+-----------------+--------------------
-+------------+------------+--------------+---------------------+---------------
--+
 
  备机查出来的Slave_IO_Running=YES,Slave_SQL_Running=YES 表示同步已经启用了，并且查看
  Replicate_do_db是否对应ais（需要复制的数据库),Exec_master_log_pos对应的值是否是
  在主机show master status时Position的值，如果正确说明以前的配置正确，继续
$$$$$$$$$$$$$$$$$$$$$$$$$$$以上部分内容供查看使用$$$$$$$$$$$$$$$$$$$$$$$
 
步骤六：
主机： 在主机aiss 数据库的aid_res表内插入一条记录
mysql -uroot
use ais;
insert into ais_res values('111111',2000,3000);
select *  from ais_res;
+--------+--------+--------+
| netno  | drflag | crflag |
+--------+--------+--------+
| 066661 |   5000 |   6000 |
| 066836 |   6000 |   6000 |
| 066616 |   5000 |   6000 |
| 066001 |   6000 |   6000 |
| 066865 |   5000 |   6000 |
| 111111 |   2000 |   3000 |
+--------+--------+--------+
6 rows in set (0.00 sec)
 
备机：查询在主机插入的记录是否存在，如果存在配置同步成功
select *  from ais_res;
+--------+--------+--------+
| netno  | drflag | crflag |
+--------+--------+--------+
| 066661 |   5000 |   6000 |
| 066836 |   6000 |   6000 |
| 066616 |   5000 |   6000 |
| 066001 |   6000 |   6000 |
| 066865 |   5000 |   6000 |
| 111111 |   2000 |   3000 |　　
+--------+--------+--------+
6 rows in set (0.00 sec)
 
 

至此说明配置的mysql数据库同步设置成功。