为mysql的安装提供前提环境和初始化安装mysql
创建数据库目录
# mkdir /mydata/data –pv
创建mysq用户
# useradd -r mysql
修改权限
# chown -R mysql.mysql /mydata/data/
使用mysql-5.5通用二进制包安装
解压mysql软件包
# tar xf mysql-5.5.28-linux2.6-i686.tar.gz-C /usr/local/
创建连接,为了方便查看mysql的版本等信息
# cd /usr/local/
#ln –sv mysql-5.5.28-linux2.6-i686.tar.gzmysql
修改属主属组
# cd mysql
# chown -R root.mysql ./*
初始化数据库
# scripts/mysql_install_db –user=mysql --datadir=/mydata/data/
提供配置文件
# cp support-files/my-large.cnf /etc/my.cnf
提供服务脚本
# cp support-files/mysql.server/etc/rc.d/init.d/mysqld
添加至服务列表
# chkconfig --add mysqld
# chkconfig --list mysqld
# chkconfig mysqld on
编辑配置文件,提供数据目录
# vim /etc/my.cnf
# The MySQL server 修改mysqld服务器端的内容
log-bin=master-bin 主服务器二进制日志文件前缀名
log-bin-index=master-bin.index 索引文件
innodb_file_per_table= 1 开启innodb的一表一个文件的设置
server-id = 1 必须是唯一的
datadir =/mydata/data 数据目录路径
启动mysql服务
# servicemysqld start
为了便于下面的测试,设置环境变量
# vim/etc/profile.d/mysql.sh
export PATH=$PATH:/usr/local/mysql/bin
执行环境变量脚本,使其立即生效
# . /etc/profile.d/mysql.sh
建立用户账户
mysql> grant replication slave on *.* to 'chris'@'172.16.%.%' identified by 'work';
刷新数据使其生效
mysql> flush privileges;
创建mysql数据库目录
# mkdir /mydata/data –pv
创建mysql用户
# useradd -r mysql
修改数据目录权限
# chown -R mysql.mysql /mydata/data/
使用mysql-5.5通用二进制包安装mysql
解压mysql软件包
# tar xf mysql-5.5.28-linux2.6-i686.tar.gz-C /usr/local/
创建连接,便于查看mysql的版本等信息
# cd /usr/local/
# ln –sv mysql-5.5.28-linux2.6-i686.tar.gzmysql
修改mysql属主属组
# cd mysql
# chown -R root.mysql ./*
初始化mysql数据库
# scripts/mysql_install_db –user=mysql--datadir=/mydata/data/
提供mysql配置文件
# cp support-files/my-large.cnf /etc/my.cnf
提供服务脚本
# cp support-files/mysql.server /etc/init.d/mysqld
添加至服务列表
# chkconfig --add mysqld
编辑配置文件
# vim /etc/my.cnf
# The MySQL server
#log-bin=mysql-bin 禁用二进制日志,从服务器不需要二进制日志文件
datadir = /mydata/data mysql的数据目录
relay-log = relay-log 设置中继日志
relay-log-index = relay-log.index 中继日志索引
innodb_file_per_table = 1
server-id = 2 id不要和主服务器的一样
设置环境变量
# vim/etc/profile.d/mysql.sh
export PATH=$PATH:/usr/local/mysql/bin
执行此脚本(导出环境变量)
# . /etc/profile.d/mysql.sh
启动服务
# service mysqld start
安装插件:mysql> INSTALL PLUGIN rpl_semi_sync_master SONAME 'semisync_master.so';
启动模块:mysql> SET GLOBAL rpl_semi_sync_master_enabled = 1;
设置超时时间:mysql> SET GLOBAL rpl_semi_sync_master_timeout = 1000;
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slave:
安装插件:msyql> INSTALL PLUGIN rpl_semi_sync_slave SONAME
'semisync_slave.so'
;
启动模块:mysql> SET GLOBAL rpl_semi_sync_slave_enabled =
1
;
重启进程使其模块生效:mysql> STOP SLAVE IO_THREAD; START SLAVE IO_THREAD;
|
在Master和Slave的my.cnf中编辑:
# On Master
[mysqld]
rpl_semi_sync_master_enabled=1
rpl_semi_sync_master_timeout=1000 #此单位是毫秒
# On Slave
[mysqld]
rpl_semi_sync_slave_enabled=1
# 主服务器上
[mysqld]
server-id = 1
log-bin = mysql-bin
relay-log = relay-mysql
relay-log-index = relay-mysql.index
auto-increment-increment = 2 #每次跳两个数。
auto-increment-offset = 1 #从1开始。
[mysqld]
server-id = 2
log-bin = mysql-bin
relay-log = relay-mysql
relay-log-index = relay-mysql.index
auto-increment-increment = 2
auto-increment-offset = 2
master:查看日志文件信息
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 107 | | |
+------------------+----------+--------------+------------------+
Slave:查看服务器日志文件信息
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 107 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
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master:
mysql> GRANT REPLICATION SLAVE ON *.* TO
'chrislee'
@
'172.16.%.%'
IDENTIFIED BY
'work'
;
mysql> flush privileges;
|
slave:
mysql> GRANT REPLICATION SLAVE ON *.* TO 'chrisli'@'172.16.%.%' IDENTIFIED BY 'work';
mysql> flush privileges
server1
mysql> CHANGE MASTER TO MASTER_HOST='172.16.7.2',MASTER_USER='chrisli',MASTER_PASSWORD='work',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=344;
server2:
mysql> CHANGE MASTER TO MASTER_HOST='172.16.7.1',MASTER_USER='chrislee',MASTER_PASSWORD='work',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=345;