mysql單服務(wù)器啟動多個實(shí)例實(shí)際有兩種方式

第一種方式就是使用mysql ?mysqld_multi

第二種方式就是分別使用不同的目錄端口啟動不同的實(shí)例

第一種方式：

1、數(shù)據(jù)庫實(shí)例目錄

data3306

data3307

data3308

2、創(chuàng)建實(shí)例

/usr/local/mysql//scripts/mysql_install_db –basedir=/usr/local/mysql/ –datadir=/usr/local/mysql/data3306 –user=mysql

/usr/local/mysql//scripts/mysql_install_db –basedir=/usr/local/mysql/ –datadir=/usr/local/mysql/data3307 –user=mysql

/usr/local/mysql//scripts/mysql_install_db –basedir=/usr/local/mysql/ –datadir=/usr/local/mysql/data3308 –user=mysql

3、修改my.cnf文件修改部分

[mysqld_multi]

mysqld = /usr/local/mysql//bin/mysqld

mysqladmin = /usr/local/mysql//bin/mysqladmin

user = root

password = 123456

[mysqld3306]

port = 3306

socket = /usr/local/mysql/mysqld3306.sock

pid-file = /usr/local/mysql/mysqld3306.pid

basedir = /usr/local/mysql/

datadir = /usr/local/mysql/data3306

[mysqld3307]

port = 3307

socket = /usr/local/mysql/mysqld3307.sock

pid-file = /usr/local/mysql/mysqld3307.pid

basedir = /usr/local/mysql/

datadir = /usr/local/mysql/data3307

[mysqld3307]

port = 3307

socket = /usr/local/mysql/mysqld3308.sock

pid-file = /usr/local/mysql/mysqld3308.pid

basedir = /usr/local/mysql/

datadir = /usr/local/mysql/data3308

4、啟動數(shù)據(jù)庫

mysqld_multi –defaults-file=/etc/mysql/my.cnf start 3306

mysqld_multi –defaults-file=/etc/mysql/my.cnf start 3307

mysqld_multi –defaults-file=/etc/mysql/my.cnf start 3308

5、登錄數(shù)據(jù)庫修改root密碼

mysql -S /usr/local/mysql/mysqld3306.sock

mysql -S /usr/local/mysql/mysqld3307.sock

mysql -S /usr/local/mysql/mysqld3308.sock

use mysql

UPDATE user SET password=PASSWORD('123456') WHERE user=’root’;

FLUSH PRIVILEGES;

6、關(guān)閉數(shù)據(jù)庫

mysqld_multi –defaults-file=/etc/mysql/my.cnf stop 3306

mysqld_multi –defaults-file=/etc/mysql/my.cnf stop 3307

mysqld_multi –defaults-file=/etc/mysql/my.cnf stop 3308

7、全部啟動/關(guān)閉

mysqld_multi –defaults-file=/etc/mysql/my.cnf start 3306-3308

mysqld_multi –defaults-file=/etc/mysql/my.cnf stop 3306-3308

第二種方式：

1，創(chuàng)建目錄

data3307

data3308

2,分別添加配置未見my.cnf

并修改里面相關(guān)的參數(shù)

3.進(jìn)行系統(tǒng)表初始化也可以從現(xiàn)有的復(fù)制過來一會

/usr/local/mysql//scripts/mysql_install_db –basedir=/usr/local/mysql/ –datadir=/usr/local/mysql/data3307 –user=mysql

/usr/local/mysql//scripts/mysql_install_db –basedir=/usr/local/mysql/ –datadir=/usr/local/mysql/data3308 –user=mysql

4，啟動腳本修改

cp /etc/init.d/mysql.server /etc/ini.d/mysql3307.server ? cp /etc/init.d/mysql.server /etc/init.d/mysql3308.server

然后修改里面的配置路徑

5，分別啟動數(shù)據(jù)庫，啟動之前相關(guān)目錄權(quán)限修改為mysql:mysql

/etc/init.d/mysql.server start ?/etc/init.d/mysql3307.server start ?/etc/init.d/mysql3308.server start

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