mysql 同步实现， master-salve

出自 biandongmei的空间  http://hi.baidu.com/biandongmei/blog/item/48883418c180a45442a9ad50.html

 

 

mysql 同步实现， master-salve

‍ 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 replicate-do-db=vbb 告诉slave只做vbb数据库的更新 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;