MySQL主主同步配置
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 实战环境介绍: 服务器名 IP 系统 MySQL odd.example.com 192.168.1.116 rhel-5.8 5.5.16 even.example.com 192.168.1.115 rhel-5.8 5.5.16 假设要同步的库是 db_rocky ㈠ 创建同步用户 在 ODD上 [pl
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实战环境介绍:
服务器名 IP 系统 MySQL
odd.example.com 192.168.1.116 rhel-5.8 5.5.16
even.example.com 192.168.1.115 rhel-5.8 5.5.16
假设要同步的库是 db_rocky
㈠ 创建同步用户
在 ODD上
[plain]
mysql> grant replication slave on *.* to 'water'@'192.168.1.115' identified by 'cdio2010';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
在 EVEN 上
[plain]
mysql> grant replication slave on *.* to 'water'@'192.168.1.116' identified by 'cdio2010';
Query OK, 0 rows affected (0.11 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
㈡ 修改 /etc/my.cnf 配置文件,为其添加以下内容:
在 ODD 上
[plain]
[mysqld]
binlog-do-db=db_rocky #需要记录进制日志的数据库。如果有多个数据库可用逗号分隔,或者使用多个binlog-do-db选项
binlog-ignore-db=mysql #不需要记录进制日志的数据库。如果有多个数据库可用逗号分隔,或者使用多个binlog-do-db选项
replicate-do-db=db_rocky #需要进行同步的数据库。如果有多个数据库可用逗号分隔,或者使用多个replicate-do-db选项
replicate-ignore-db=mysql,information_schema #不需要同步的数据库。如果有多个数据库可用逗号分隔,或者使用多个replicate-ignore-db选项
#同步参数:
#保证slave挂在任何一台master上都会接收到另一个master的写入信息
log-slave-updates
sync_binlog=1
auto_increment_offset=1
auto_increment_increment=2
slave-skip-errors=all #过滤掉一些没啥大问题的错误
在 EVEN 上
[plain]
[mysqld]
server-id=2 #设置一个不同的id、注意这里在my.cnf里面有个默认值是 1 、把默认值改掉、而不能新增一个server-id
binlog-do-db=db_rocky #需要记录二进制日志的数据库。如果有多个数据库可用逗号分隔,或者使用多个binlog-do-db选项
binlog-ignore-db=mysql #不需要记录进制日志的数据库。如果有多个数据库可用逗号分隔,或者使用多个binlog-ignore-db选项
#需要同步的数据库
replicate-do-db=db_rocky #需要进行同步的数据库。如果有多个数据库可用逗号分隔,或者使用多个binlog-do-db选项
replicate-ignore-db=mysql,information_schema #不需要同步的数据库。如果有多个数据库可用逗号分隔,或者使用多个binlog-do-db选项
#同步参数:
#保证slave挂在任何一台master上都会接收到另一个master的写入信息
log-slave-updates
sync_binlog=1
auto_increment_offset=2
auto_increment_increment=2
slave-skip-errors=all #过滤掉一些没啥大问题的错误
㈢ 分别重启服务器ODD EVEN 上的mysql服务
㈣ 分别在服务器ODD、EVEN 上查看做为主服务器状态
在ODD
[plain]
mysql> flush tables with read lock;#防止进入新的数据
Query OK, 0 rows affected (0.00 sec)
mysql> show master status\G;
*************************** 1. row ***************************
File: mysql-bin.000007
Position: 438
Binlog_Do_DB: db_rocky
Binlog_Ignore_DB: mysql
1 row in set (0.00 sec)
在EVEN
[plain]
mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)
mysql> show master status\G;
*************************** 1. row ***************************
File: mysql-bin.000008
Position: 107
Binlog_Do_DB: db_rocky
Binlog_Ignore_DB: mysql
1 row in set (0.01 sec)
㈤ 分别在服务器ODD、EVEN上用change master语句指定同步位置 :
在ODD
[plain]
mysql> change master to master_host='192.168.1.115',master_user='water',master_password='cdio2010',
-> master_log_file='mysql-bin.000008',master_log_pos=107;
Query OK, 0 rows affected (0.05 sec)
在EVEN
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