进击的MySQL——Slave环境搭建及配置

进击的MySQL——Slave环境搭建及配置

一）环境拓扑

今天讨论的是mysql集群这一块，资源如下所示：

二）Mysql安装配置

这里不一一赘述，可以选择源代码编译安装，也可以参考我之前的一篇博文“懒人“速成——linux LAMP环境。

三）节点配置

主节点：

1.首先在数据库中建立2个数据库和表：

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#service mysqld start #mysql mysql>create database www; mysql>use www; mysql>create table www(id int); mysql>insert into www values(1); mysql> select * from www;

查看数据： ；

同理创建blog数据库和表：

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mysql>create database blog; mysql>use blog; mysql>create table blog(id int); mysql>insert into blog values(1); mysql> select * from blog;

 

2.修改My.cnf配置文件

1	vi etc/my.cnf

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[mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-bin=mysql-bin //日志为2进制，不需要更改 server-id =1 //为1就是Master,不需要更改 binlog-do-db=blog //需要同步的库 binlog-do-db=www //需要同步的库 binlog-ignore-db=mysql,test,information_schema //不需要记录日志的数据库名，多个数据库中间用逗号(,)隔开   innodb_data_home_dir = /usr/local/mysql/data/ //innodb的表空间位置 innodb_data_file_path = ibdata1:50M:autoextend //表空间的名字，开始50M innodb_log_group_home_dir = /usr/local/mysql/data/ innodb_buffer_pool_size = 256M //为系统内存的50-80% innodb_additional_mem_pool_size = 20M innodb_log_file_size = 64M innodb_log_buffer_size = 8M innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 50 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid

3.重启数据库

1	[root@Test01 /]# service mysqld restart

 

1 2	Stopping mysqld: [ OK ] Starting mysqld: [ OK ]

4.创建有权限的账号，让Slave数据库访问主数据库

 

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[root@Test01 /]# mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.1.69-log Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>

 

 

1 2	mysql> grant replication slave on *.* to repl@"192.168.1.26" identified by '123456'; Query OK, 0 rows affected (0.00 sec)

 

 

1 2	mysql>flush privileges; ;

注意：格式:GRANT REPLICATION SLAVE ON *.* TO '帐号'@'从服务器IP或主机名' IDENTIFIED BY '密码';

5.备份Master数据库

 

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mysql> flush tables with read lock; //不要退出这个终端，否则这个锁就不生效了。 同时取得快照，并记录日志和偏移量： mysql> show master status; +------------------+----------+--------------+-------------------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+-------------------------------+ | mysql-bin.000001 | 196 | blog,www | mysql,test,information_schema | +------------------+----------+--------------+-------------------------------+ 1 row in set (0.00 sec)

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