MySQL 互为主备的简单搭建

MySQL 互为主备的简单搭建 192.168.190.128《====》192.168.190.129 master----》slave slave《----master 1.在master 128 上配置

mysql 互为主备的简单搭建

192.168.190.128《====》192.168.190.129
 master----》slave
 slave《----master
 
1.在master 128 上配置my.cnf文件，添加下列参数：
 server-id=1
 log-bin=mysql-bin
 log-salve-updates
 sync_binlog=1
 auto_increment_increment=2
 auto_increment_offset=1
 
 重新启动mysql
 [root@calvin1 ~]# /etc/init.d/mysqld start
 Starting MySQL:  [  OK  ]
 [root@calvin1 ~]# mysql -u root -p123456
 Welcome to the MySQL monitor.  Commands end with ; or \g.
 Your MySQL connection id is 6
 Server version: 5.0.77-log Source distribution
 
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
 
mysql> show databases;
 +--------------------+
 | Database          |
 +--------------------+
 | information_schema |
| calvin            |
| calvin2            |
| mysql              |
| sampdb            |
| test              |
| testdb            |
+--------------------+
 7 rows in set (0.00 sec)
 

2.在master 129 上配置my.cnf文件，，添加下列参数：
 server-id=2
 log-bin=mysql-bin
 log-salve-updates
 sync_binlog=1
 auto_increment_increment=2
 auto_increment_offset=2
 
重新启动mysql
 [root@calvin2 ~]# /etc/init.d/mysqld start
 Starting MySQL:  [  OK  ]
 [root@calvin2 ~]# mysql -u root -p123456
 Welcome to the MySQL monitor.  Commands end with ; or \g.
 Your MySQL connection id is 7
 Server version: 5.0.77-log Source distribution
 
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
 
mysql> show databases;
 +--------------------+
 | Database          |
 +--------------------+
 | information_schema |
| calvin            |
| calvin2            |
| mysql              |
| sampdb            |
| test              |
| testdb            |
+--------------------+
 7 rows in set (0.00 sec)
 

3.在在master 128上创建复制账号：
mysql> grant replication slave,file on *.* to mysync@'192.168.190.129' identified by '123456';
 Query OK, 0 rows affected (0.00 sec)
 
mysql> flush privileges;
 Query OK, 0 rows affected (0.00 sec)
 
对所有表添加只读锁：
 mysql> flush tables with read lock;
 Query OK, 0 rows affected (0.00 sec)
 
查看master二进制文件，pos号：
 mysql> show master status\G;
 *************************** 1. row ***************************
            File: mysql-bin.000004
        Position: 906
    Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
 
ERROR:
No query specified
 
mysql> unlock tables;
 Query OK, 0 rows affected (0.00 sec)
 
mysql> stop slave;
 Query OK, 0 rows affected, 1 warning (0.00 sec)
 

4.在在master 129上创建复制账号：
 mysql> grant replication slave,file on *.* to mysync@'192.168.190.128' identified by '123456';
 Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
 Query OK, 0 rows affected (0.00 sec)
 
对所有表添加只读锁：
 mysql> flush tables with read lock;
 Query OK, 0 rows affected (0.00 sec)
 
查看master二进制文件，pos号：
 mysql> show master status\G;
 *************************** 1. row ***************************
            File: mysql-bin.000001
        Position: 318
    Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
 
ERROR:
No query specified
 
mysql> unlock tables;
 Query OK, 0 rows affected (0.00 sec)
 
mysql> stop slave;
 Query OK, 0 rows affected (0.00 sec)
 
 
 
5.修改同步参数：
 根据第3步读取的二进制文件和pos号，配置master 128的同步参数：
 mysql> change master to
    -> master_host='192.168.190.129',
    -> master_user='mysync',
    -> master_password='123456',
    -> master_log_file='mysql-bin.000001',
    -> master_log_pos=318;
 Query OK, 0 rows affected (0.01 sec)
 
mysql> start slave;
 Query OK, 0 rows affected (0.00 sec)
 
根据第4步读取的二进制文件和pos号，配置master 129的同步参数：
 mysql> change master to
    -> master_host='192.168.190.128',
    -> master_user='mysync',
    -> master_password='123456',
    -> master_log_file='mysql-bin.000004',
    -> master_log_pos=906;           
Query OK, 0 rows affected (0.01 sec)
 
mysql> start slave;
 Query OK, 0 rows affected (0.01 sec)