1、下載MySQL源碼安裝版
wget -c ftp://ftp.mirrorservice.org/sites/ftp.mysql.com/Downloads/MySQL-5.1/mysql-5.1.60.tar.gz
2、解壓安裝
tar -zxv -f mysql-5.1.60.tar.gz ./configure --prefix=/usr/local/mysql --with-charset=utf8 --with-extra-charset=all --enable-thread-safe-client --enable-assembler --with-readline --with-big-tables --with-named-curses-libs=/usr/lib/libncursesw.so.5 make && make install
手動創建/usr/local/mysql/var目錄
cp /usr/local/mysql/share/mysql/my-medium.cnf /usr/local/mysql/var/my.cnf cp /usr/local/mysql/share/mysql/mysql.server /etc/init.d/mysqld
添加服務
chkconfig --add mysqld chkconfig --level 2345 mysqld on chown mysql:mysql -R /usr/local/mysql/ service mysqld start ln -s /usr/local/mysql/bin/mysql /sbin/mysql ln -s /usr/local/mysql/bin/mysqladmin /sbin/mysqladmin
設定mysql密碼
mysqladmin -uroot password "123456"
3、添加用戶和用戶組
groupadd mysql #添加mysql用戶組 useradd -g mysql mysql #創建mysql用戶並把它放到mysql組下 chown -R root:mysql /usr/local/mysql #修改mysql文件屬性 groupadd mysql #添加mysql用戶組 useradd -g mysql mysql # 創建mysql用戶並把它放到mysql組下 chown -R root:mysql /usr/local/mysql #修改mysql文件屬性
4、初始化數據目錄
#把用到的工具添加到/usr/bin目錄
ln -s /usr/local/mysql/bin/mysqld_multi /usr/bin/mysqld_multi ln -s /usr/local/mysql/bin/mysql_install_db /usr/bin/mysql_install_db
#初始化四個數據目錄
mysql_install_db --datadir=/usr/local/var/mysql1 --user=mysql mysql_install_db --datadir=/usr/local/var/mysql2 --user=mysql mysql_install_db --datadir=/usr/local/var/mysql3 --user=mysql mysql_install_db --datadir=/usr/local/var/mysql4 --user=mysql
初始化時可能報錯則使用
mysql_install_db --defaults-file=/data/mysql1/my.cnf --user=mysql --datadir=/data/mysql1/ --basedir=/usr/local/mysql #修改屬性 chown -R mysql /usr/local/var/mysql1 chown -R mysql /usr/local/var/mysql2 chown -R mysql /usr/local/var/mysql3 chown -R mysql /usr/local/var/mysql4
5、配置多實例啟動腳本
從MySQL的源碼中把復制到/etc/init.d/目錄下
cp ./mysql-5.1.60/support-files/mysqld_multi.server /etc/init.d/mysqld_multi.server #修改basedir和bindir為安裝路徑 basedir=/usr/local/mysql bindir=/usr/local/mysql/bin
6、配置多實例數據庫配置文件
用mysqld_multi工具查看該配置文件的模板方法，
命令為：mysqld_multi –example
在/etc/目錄下創建創建文件/etc/mysqld_multi.cnf，把mysqld_multi –example產生的文件粘進去，修改相應屬性，如：mysqld,mysqladmin,socket,port,pid-file,datadir,user等。
[mysqld_multi] mysqld = /usr/local/mysql/bin/mysqld_safe mysqladmin = /usr/local/mysql/bin/mysqladmin #user = mysql #password = my_password [mysqld1] socket = /usr/local/var/mysql1/mysql1.sock port = 3306 pid-file = /usr/local/var/mysql1/mysql1.pid datadir = /usr/local/var/mysql1 #language = /usr/local/mysql/share/mysql/english user = mysql [mysqld2] socket = /usr/local/var/mysql2/mysql2.sock port = 3307 pid-file = /usr/local/var/mysql2/mysql2.pid datadir = /usr/local/var/mysql2 #language = /usr/local/mysql/share/mysql/english user = mysql [mysqld3] socket = /usr/local/var/mysql3/mysql3.sock port = 3308 pid-file = /usr/local/var/mysql3/mysql3.pid datadir = /usr/local/var/mysql3 #language = /usr/local/mysql/share/mysql/english user = mysql [mysqld4] socket = /usr/local/var/mysql4/mysql4.sock port = 3309 pid-file = /usr/local/var/mysql4/mysql4.pid datadir = /usr/local/var/mysql4 #language = /usr/local/mysql/share/mysql/english user = mysql
7、啟動多實例數據庫
將/usr/local/mysql/bin加到$PATH環境變量裡
export PATH=/usr/local/mysql/bin:$PATH
#查看數據庫狀態
mysqld_multi --defaults-extra-file=/etc/mysqld_multi.cnf report
#結果都為沒有運行
Reporting MySQL servers
MySQL server from group: mysqld1 is not running
MySQL server from group: mysqld2 is not running
MySQL server from group: mysqld3 is not running
MySQL server from group: mysqld4 is not running
可能需要安裝perl
yum install perl
#啟動
mysqld_multi –defaults-extra-file=/etc/mysqld_multi.cnf start
#結果為
Reporting MySQL servers
MySQL server from group: mysqld1 is not running
MySQL server from group: mysqld2 is not running
MySQL server from group: mysqld3 is not running
MySQL server from group: mysqld4 is not running
#啟動具體某一個實例可在start、stop後面加上具體數據1,2,3等
8、查看運行結果
#查看相應端口是否已經被監聽
netstat -tunlp
#查看是否有活動進程
ps -aux|grep mysql
9、登錄相應數據庫
#進入端口為3306的數據庫
mysql -uroot -p -h127.0.0.1 -P3306 mysql -uroot -p --protocol=tcp --port=3306 -h127.0.0.1
#通過sock文件登錄
mysql -uroot -p -S /usr/local/var/mysql1/mysql1.sock
#查看socket文件
mysql> SHOW VARIABLES LIKE 'socket';
#查看pid文件
mysql> SHOW VARIABLES LIKE '%pid%';
帳號密碼修改
use mysql update user set password=password<"root"> where user='root';
進入數據庫
use mysql
update user set password=password<”root”> where user=’root’;
