数据库安装

磁盘规划 （RAID 10 + lvm）

创建RAID10

[root@master ~]# fdisk -l | grep -v lv | grep '^Disk /dev'

Disk /dev/sda: 10.7 GB, 10737418240 bytes

Disk /dev/sdb: 5368 MB, 5368709120 bytes

Disk /dev/sdc: 5368 MB, 5368709120 bytes

Disk /dev/sde: 5368 MB, 5368709120 bytes

Disk /dev/sdd: 5368 MB, 5368709120 bytes

[root@master ~]# yum -y install mdadm

创建两个RAID 1

[root@master ~]# mdadm -C /dev/md0 -l1 -n2 /dev/sdb /dev/sdc

[root@master ~]# mdadm -C /dev/md1 -l1 -n2 /dev/sdd /dev/sde

[root@master ~]# cat /proc/mdstat

Personalities : [raid1]

md1 : active raid1 sde[1] sdd[0]

5241844 blocks super 1.2 [2/2] [UU]

[====>................] resync = 24.7% (1299584/5241844) finish=14.9min speed=4398K/sec

md0 : active raid1 sdc[1] sdb[0]

5241844 blocks super 1.2 [2/2] [UU]

[======>..............] resync = 31.8% (1669696/5241844) finish=13.4min speed=4428K/sec

unused devices: <none>

在RAID 1的基础上创建RAID 0

[root@master ~]# mdadm -C /dev/md10 -l0 -n2 /dev/md[0-1]

[root@master ~]# mdadm -D /dev/md10

/dev/md10:

Version : 1.2

Creation Time : Mon Aug 16 05:13:52 2013

Raid Level : raid0

Array Size : 10480640 (10.00 GiB 10.73 GB)

Raid Devices : 2

Total Devices : 2

Persistence : Superblock is persistent

Update Time : Mon Aug 16 05:13:52 2013

State : clean

Active Devices : 2

Working Devices : 2

Failed Devices : 0

Spare Devices : 0

Chunk Size : 512K

Name : master:10 (local to host master)

UUID : acb6111a:9df3f58b:6d306d91:e7a15c55

Events : 0

Number Major Minor RaidDevice State

0 9 0 0 active sync /dev/md0

1 9 1 1 active sync /dev/md1

[root@master ~]# mdadm -Ds >> /etc/mdadm.conf

[root@master ~]# cat /etc/mdadm.conf

ARRAY /dev/md0 metadata=1.2 name=master:0 UUID=8612c668:34adfcdd:addd0b44:93cc0e25

ARRAY /dev/md1 metadata=1.2 name=master:1 UUID=8920ce12:68d23fb6:8b2c7e86:b9888922

ARRAY /dev/md10 metadata=1.2 name=master:10 UUID=acb6111a:9df3f58b:6d306d91:e7a15c55

准备挂载目录：

[root@master ~]# mkdir /mydata

LVM

[root@master ~]# vgcreate mydata /dev/md10

No physical volume label read from /dev/md10

Metadata inconsistency: Not all flags successfully exported.

Metadata inconsistency: Not all flags successfully exported.

Writing physical volume data to disk "/dev/md10"

Physical volume "/dev/md10" successfully created

Volume group "mydata" successfully created

[root@master ~]# lvcreate -n mydata -L 5G mydata

Logical volume "mydata" created

格式化文件系统并实现开机自动挂载：

[root@master ~]# mkfs.ext4 /dev/mapper/mydata-mydata

[root@master ~]# blkid /dev/mapper/mydata-mydata

[root@master ~]# vim /etc/fstab

UUID="8512c302-3e7d-47b7-8d69-d51c5253a13d" /mydata ext4 defaults 0 0

[root@master ~]# mount -a

[root@master ~]# ls /mydata/

lost+found

[root@master ~]# df -PTh | grep mydata

/dev/mapper/mydata-mydata ext4 5.0G 138M 4.6G 3% /mydata

二进制安装mysql-5.5.28

[root@master ~]# yum -y install libaio-devel

[root@master ~]# mkdir -pv /mydata/data

#新建用户和组

[root@master ~]# groupadd -r mysql

[root@master ~]# useradd -g mysql -r -s /sbin/nologin -M -d /mydata/data mysql

[root@master ~]# chown -R mysql:mysql /mydata/data

[root@master ~]# tar xf mysql-5.5.28-linux2.6-i686.tar.gz -C /usr/local

[root@master ~]# cd /usr/local/

[root@master ~]# ln -sv mysql-5.5.28-linux2.6-i686 mysql

[root@master local]# cd mysql

[root@master mysql]# chown -R mysql:mysql .

[root@master mysql]# /usr/local/mysql/scripts/mysql_install_db --user=mysql --datadir=/mydata/data

[root@master mysql]# chown -R root .

为mysql提供主配置文件：

[root@master mysql]# cp support-files/my-large.cnf /etc/my.cnf

修改配置文件指定数据存放目录datadir = /mydata/data

为mysql提供sysv服务脚本

[root@master mysql]# cp support-files/mysql.server /etc/rc.d/init.d/mysqld

[root@master mysql]# chmod +x /etc/rc.d/init.d/mysqld

[root@master mysql]# chkconfig --add mysqld

[root@master mysql]# chkconfig mysqld on

[root@master mysql]# ln -sv /usr/local/mysql/bin/mysql /bin/

[root@master mysql]# ln -sv /usr/local/mysql/include /usr/include/mysql

输出mysql的库文件给系统库查找路径：

[root@master mysql]# echo '/usr/local/mysql/lib' > /etc/ld.so.conf.d/mysql.conf

让系统重新载入系统库：

[root@master mysql]# ldconfig

[root@master ~]# service mysqld start

Starting MySQL... SUCCESS!

[root@master ~]# mysql

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.5.28-log MySQL Community Server (GPL)

Copyright (c) 2000, 2012, 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> select version();

+------------+

| version() |

+------------+

| 5.5.28-log |

+------------+

1 row in set (0.00 sec)

mysql> show databases;

+--------------------+

| Database |

+--------------------+

| information_schema |

| mysql |

| performance_schema |

| test |

+--------------------+

4 rows in set (0.02 sec)

数据迁移:

[root@master ~]# export PATH=/usr/local/mysql/bin/:$PATH

[root@master mysql]# mysql -e "create database bbs CHARACTER SET GBK;grant all on *.* to root@localhost identified by 'redhat';grant all privileges on bbs.* to root@'172.16.100.%' identified by 'redhat';delete from mysql.user where password = '';flush privileges"

[root@web1 ~]# mysqldump -uroot -p bbs | mysql -uroot -predhat bbs

[root@web1 ~]# sed -i 's/localhost/172\.16\.100\.61/g' /var/www/html/config/config_global.php

[root@web2 ~]# sed -i 's/localhost/172\.16\.100\.61/g' /var/www/html/config/config_global.php

mysql> show processlist;

+----+----------------------+---------------------+------+---------+------+-------+------------------+

| Id | User | Host | db | Command | Time | State | Info |

+----+----------------------+---------------------+------+---------+------+-------+------------------+

| 8 | root | localhost | NULL | Query | 0 | NULL | show processlist |

| 9 | unauthenticated user | 172.16.100.81:52901 | NULL | Connect | NULL | login | NULL |

+----+----------------------+---------------------+------+---------+------+-------+------------------+

[root@web3 ~]# sed -i 's/localhost/172\.16\.100\.61/g' /usr/local/apache/htdocs/data/config.php

[root@master mysql]# mysql -p -e "create database shop;grant all on shop.* to shopdba@'172.16.100.%' identified by 'redhat';flush privileges;"

[root@web3 ~]# mysqldump shop >shop.sql

[root@web3 ~]# scp shop.sql 172.16.100.61:/root/

[root@master ~]# mysql -p shop<shop.sql

mysql> show processlist;
+----+----------------------+---------------------+------+---------+------+-------+------------------+
| Id | User                 | Host                | db   | Command | Time | State | Info             |
+----+----------------------+---------------------+------+---------+------+-------+------------------+
| 31 | root                 | localhost           | NULL | Query   |    0 | NULL  | show processlist |
| 35 | unauthenticated user | 172.16.100.42:38781 | NULL | Connect | NULL | login | NULL             |
+----+----------------------+---------------------+------+---------+------+-------+------------------+