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通過rpm安裝mysql，測試版本5.1.48

1、在linux下通過:

#useradd multi -g mysql -s /sbin/nologin添加一個multi用戶，并加入到mysql組

#passwd multi給multi用戶添加密碼，這里設(shè)置的密碼為multi

2、拷貝數(shù)據(jù)文件：

rpm安裝mysql默認(rèn)datadir為/var/lib/mysql (同時啟動兩個mysql，拷貝2份數(shù)據(jù)文件)

#cp -R /var/lib/mysql /var/lib/mysql1

#cp -R /var/lib/mysql /var/lib/mysql2

3、修改權(quán)限

#chmod -R 777 /var/lib/mysql1

#chmod -R 777 /var/lib/mysql2

4、設(shè)置my.cnf

My.cnf如下：

# This file should probably be in your home dir (~/.my.cnf)

# or /etc/my.cnf

# Version 2.1 by Jani Tolonen

[mysqld_multi]

mysqld= /usr/bin/mysqld_safe

mysqladmin = /usr/bin/mysqladmin

user= multi

password= multi

[mysqld1]

socket= /tmp/mysql.sock1

port= 3306

pid-file= /var/lib/mysql1/db.pid1

datadir= /var/lib/mysql1

skip-locking

log-error = /var/lib/mysql1/db1.err

user = mysql

long_query_time = 1

key_buffer = 256M

max_allowed_packet = 200M

table_cache = 512

sort_buffer_size = 2M

read_buffer_size = 2M

myisam_sort_buffer_size = 64M

thread_cache = 32

query_cache_size = 32M

thread_concurrency = 2

max_connections=1000

server-id = 1

character-set-server=utf8

[mysqld2]

socket= /tmp/mysql.sock2

port= 3307

pid-file= /var/lib/mysql2/db.pid2

datadir= /var/lib/mysql2

skip-locking

log-error = /var/lib/mysql2/db2.err

user = mysql

long_query_time = 1

key_buffer = 256M

max_allowed_packet = 200M

table_cache = 512

sort_buffer_size = 2M

read_buffer_size = 2M

myisam_sort_buffer_size = 64M

thread_cache = 32

query_cache_size = 32M

thread_concurrency = 2

max_connections=1000

server-id = 2

character-set-server=utf8

5、啟動mysql

#mysqld_multi start 1-2

6、命令行登錄mysql

#mysql -u root -S /tmp/mysql.sock1 -p登錄第一個mysql

#mysql -u root -S /tmp/mysql.sock2-p登錄第二個mysql

7、關(guān)閉mysql，只有登錄每個mysql，給multi用戶添加權(quán)限后才可以通過mysqld_multi stop 1-2來停止mysql

1)mysql -u root -S /tmp/mysqld.sock1 -p

GRANT SHUTDOWN ON *.* TO 'multi'@'localhost' IDENTIFIED BY 'multi';

2)mysql -u root -S /tmp/mysqld.sock2 -p

GRANT SHUTDOWN ON *.* TO 'multi'@'localhost' IDENTIFIED BY 'multi';

停止：

mysqld_multi stop 1-2(可以通過mysqld_multi stop 1來停止其中的任意個mysql)

8、賦予遠(yuǎn)程登錄權(quán)限

登錄mysql shell，分別在兩個mysql上運(yùn)行一下語句，允許遠(yuǎn)程連接mysql

mysql> UPDATE mysql.user SET Host='%' WHERE Host='localhost' ;

mysql>GRANT ALL PRIVILEGES ON *.* TO root@"%";

mysql> FLUSH PRIVILEGES ;

總結(jié)

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