Mysql的主从服务器架构配置_MySQL
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所谓主从Mysql服务器架构,就是在主服务器上的操作同时也拷贝一份到从服务器上来。
接下来我使用两台机器做一下这个过程,
复制的作用:
1.数据分部
2.实现读的负载均衡
3.备份(本身不能备份,但是能提供一个备份机)
4.高可用和故障转移的能力
5.测试Mysql的升级
复制的类型:
a.基于语句的复制
b.基于行的复制
c.混合型的复制(a和b的结合)
服务器的地址规划
主服务器IP:192.168.1.108
从服务器IP:192.168.1.110
实验拓扑结构:
master_mysql-----------------client_mysql
1.安装Mysql
#mkdir -vp /mydata/data
#groupadd -g 3306 mysql
#useradd -g mysql -s /sbin/nologin -M -u 3306 mysql
#chown -R mysql:mysql /www/mydata/
# tar x mysql-5.5.15-linux2.6-i686.tar.gz -C /usr/local
#ln -vs /usr/local/mysql-5.5.15-linux2.6-i686 /usr/local/mysql
#cd /usr/local/mysql
#chown -R mysql:mysql .
#scripts/mysql_install_db --user=mysql --datadir=/mydata/data
#chown -R root .
#cp support-files/mysql.server /etc/init.d/mysqld
#chkconfig --add mysqld
#cp support-files/my-large.cnf /etc/my.cnf
#vim /etc/my.cnf
添加:datadir=/mydata/data
service mysqld start
指定mysql二进制的文件:
#export PATH=$PATH:/usr/local/mysql/bin(临时)
#vim /etc/profile
添加PATH=$PATH:/usr/local/mysql/bin也行(永久)
指定lib文件
#vim /etc/ld.so.conf.d/mysql.conf
添加: /usr/local/mysql/lib
ldconfig 同步一下
#ldconfig -v | grep mysql
头文件:
#ln -sv /usr/local/mysql/include /usr/include/mysql
帮助信息:
#vim /etc/man.config
添加: MANPATH /usr/local/mysql/man
这下配置需要在两个服务器上都需要进行配置的
2.接下来开始真正的主从mysql服务器的配置了
主服务器的配置如下
#vim /etc/my.cnf 添加如下信息
log-bin=mysql-bin
log-bin-index=mysql-bin.index
binlog-format=maxed
server id = 1
修改完成后保存,重启Mysql
#service mysqld restart
然后登录到Mysql对192.168.1.110主机授权
#mysql
mysql> GRANT REPLICATION CLIENT,REPLICATION SLAVE ON *.* TO repl@'192.168.1.110' IDENTIFIED BY 'redhat';
mysql> FLUSH PRIVILEGES;
3.从文件配置
#vim /etc/my.cnf
注释掉log-bin=mysql-bin,binlog-format=maxed
添加relay-log=relay-bin.index,relay-log=relay-bin,replicate-ignore-db =mysql
修改server-id = 2
保存配置文件后重新启动Mysql
#service mysqld restart
#mysql
mysql> CHANGE MASTER TO MASTER_HOST='192.168.1.108',MASTER_USER='repl',MASTER_PASSWORD='redhat';
mysql> START SLAVE;
mysql> SHOW SLAVE STATUS/G;查看从服务器的运行状态
如果出现如下信息,可以确定信息已经从主服务器上复制到了从服务器
mysql> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| luowei |
| mysql |
| performance_schema |
| test |
+--------------------+
mysql> SELECT * FROM st;
+----+------+
| ID | Name |
+----+------+
| 1 | a |
| 2 | b |
| 3 | c |
| 5 | E |
+----+------+
这个时候主从服务器上的数据库就同步了,实验成功!!
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