参考资料:
http://www.cnblogs.com/wuhou/archive/2008/09/28/1301071.html
http://www.hebaodans.com/2009/02/m-y-s-q-l-shu-ju-ku-de-tong-bu-wen-ti-shuang-ji-re-bei/
1.安装最新的Ubuntu Server版本,并更新系统。
2.安装MySQL Server:sudo apt-get instal mysql-server,然后设置管理员密码,去掉本地地址绑定,以便可以进行远程访问。
主:192.168.137.12
从:192.168.137.13
3.设置utf8字符集来支持中文,在主从服务器的配置文件/etc/mysql/my.cnf中加入:
[client]
default-character-set = utf8[mysqld]
default-character-set = utf8init_connect = 'SET NAMES utf8;'
4.在服务器中启动备份。首先在主服务器在配置文件中添加下面的内容。其中s3(举个例子)为需要同步的数据库。
[mysqld]
log-bin = mysql-bin
server-id = 1
binlog-do-db = s3
5.重新启动主数据库。
sudo service start mysql
6.连接到主数据库,并创建你需要同步的数据库,如果已经存在可以忽略这一步。
mysql –u root –p
create database s3;
7.在服务器中添加一个账号(sync)用于同步数据库,并赋予从备份的权限,重要。
grant replication slave on *.* to 'sync'@'%' identified by '12345'
8.记录s3数据库的日志文件名称和位置,用于从机备份开始的位置。
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000007 | 106 | s3 | |
+------------------+----------+--------------+------------------+
9.修改从机的配置文件。
[mysqld]
server-id = 2
read-only
master-connect-retry = 60
replicate-do-db = s3
10.重新启动从机,新建数据库(s3)或者从原来的数据库恢复数据库。并执行命令:
change master to MASTER_HOST='192.168.137.12', MASTER_USER='sync',MASTER_PASSWORD='12345',MASTER_LOG_FILE='mysql-bin.000007',MASTER_LOG_POS=106;
11.启动从机备份,并查看从机状态。
start slave;
show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.137.12
Master_User: sync
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000007
Read_Master_Log_Pos: 106
Relay_Log_File: S3-DB-SLAVE-1-relay-bin.000010
Relay_Log_Pos: 251
Relay_Master_Log_File: mysql-bin.000007
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: s3
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: 106
Relay_Log_Space: 559
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)
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
表示工作正常,否者出现问题。出现问题重要的解决工具是查看日志记录。
cat /var/log/mysql/error.log