mysql master-slave 数据库同步[mark]

linux OS: ubuntu server 8.04.1
software: mysql5.0.51
mysql1 : 192.168.6.4 //master
mysql2 : 192.168.6.5 //slave

安装步骤 
1. 分别在两台机器上安装mysql-server
shell > apt-get install mysql-server
2.修改 mysql1 master 的配置文件
vim /etc/mysql/my.cnf
找到 bind-address = 127.0.0.1
改为 bind-address = 0.0.0.0
找到 
＃server-id = 1
＃log_bin = /var/log/mysql/mysql-bin.log
去掉 注释符号
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
default-character-set = utf8 #新加上的为了保持编码一至防止出错

3.改好后保存退出，然后建立一个slave服务器的用户账号
root@msyql1:/# mysql -uroot -p

mysql> grant replication slave,replication client on *.* to ludy@'192.168.6.5' identified by 'ypmwbg';
mysql > grant replication slave on *.* to [email protected] identified by 'ypmwbg'; //给予权限
到这里要注意了，我的两台数据库都是空的.

重启mysql服务

4.修改 mysql2 服务器slave的 my.cnf配置文件
找到 bind-address = 127.0.0.1
替换 bind-address = 0.0.0.0
找到 
＃server-id = 1
＃log_bin = /var/log/mysql/mysql-bin.log
把 注释符号去掉 改为如下

server-id = 2
master-host = 192.168.6.4
master-user = ludy
master-password = ypmwbg
master-port = 3306
log_bin = /var/log/mysql/mysql-bin.log
log-slave-updates
skip-slave-start
配置完后 重新启动mysql

然后进入 mysql1 master 服务器
root@msyql:~# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.0.51a-3ubuntu5.4-log (Ubuntu)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 98 | | | 
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

记录下来以后 进入 mysql2 slave mysql

root@msyql2:~# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.0.51a-3ubuntu5.4-log (Ubuntu)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> change master to master_log_file='mysql-bin.000001', master_log_pos=98;

//这个地方就是记录下来的 mysql1 master 的数据

mysql > start slave; //启动slave 服务

mysql > show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.6.4
Master_User: ludy
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 181
Relay_Log_File: mysqld-relay-bin.000003
Relay_Log_Pos: 235
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: 181
Relay_Log_Space: 235
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
1 row in set (0.01 sec)

哈哈 Slave_IO_Running: Yes
Slave_SQL_Running: Yes

说明启动成功
然后在 master 新建 一个数据库看看

root@msyq1l:/# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 5.0.51a-3ubuntu5.4-log (Ubuntu)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> create database chenggong;
Query OK, 1 row affected (0.00 sec)

在 salve 查看看是否同步
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema | 
| chenggong | //同步了哈哈 ～
| mysql | 
| test | 
+--------------------+
4 rows in set (0.01 sec)


好了就写这么多，如果你作 master－slave 的时候 你的master 数据里有数据那么
你必须 在 我写的 第三步与第四步中加入一下步骤：

接 上文 第三步
进入master数据库的Mysql控制台执行 
mysql >FLUSH TABLES WITH READ LOCK; //锁表
然后从新打开一个 终端 拷贝 master 的所有的数据到 slave 服务器覆盖
读取 master 二进制文件与偏移量
mysql > show master status;
同样 要记录下 file 与 position 的值
然后解锁
mysql > unlock tables;