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)