MySQL-----多實例配置

1.1 MySQL實例---多實例配置

1.1.1 多實例概述

多套後臺進程+線程+內存結構mysql

多個端口,多個配置文件,多個日誌文件,多個socket,多個server_idweb

多套數據sql


##PS:安裝多實例前,首先確保MySQL數據庫已安裝,mysql安裝參考:http://www.javashuo.com/article/p-pskzyduo-bb.html數據庫

1.1.2 準備多套配置文件

mkdir -p /data/330{7..9}           #<=====建立多個目錄vim

================第一個實例===================app

vim /data/3307/my.cnfsocket


[mysqld]ide

basedir=/application/mysqlspa

datadir=/data/3307/data線程

socket=/data/3307/mysql.sock

log-error=/data/3307/mysql.log

log-bin=/data/3307/mysql-bin

server-id=7

port=3307

[client]

socket=/data/3307/mysql.sock


================第二個實例===================

vim /data/3308/my.cnf


[mysqld]

basedir=/application/mysql

datadir=/data/3308/data

socket=/data/3308/mysql.sock

log-error=/data/3308/mysql.log

log-bin=/data/3308/mysql-bin

server-id=8

port=3308

[client]

socket=/data/3308/mysql.sock

================第三個實例===================

vim /data/3309/my.cnf


[mysqld]

basedir=/application/mysql

datadir=/data/3309/data

socket=/data/3309/mysql.sock

log-error=/data/3309/mysql.log

log-bin=/data/3309/mysql-bin

server-id=9

port=3309

[client]

socket=/data/3309/mysql.sock

=========================================

chown -R mysql.mysql /data/330*      #<======將3個目錄受權給mysql用戶


1.1.3 初始化多套數據


/application/mysql/scripts/mysql_install_db --user=mysql --basedir=/application/mysql --datadir=/data/3307/data

=================================================================================


/application/mysql/scripts/mysql_install_db --user=mysql --basedir=/application/mysql --datadir=/data/3308/data

=================================================================================


/application/mysql/scripts/mysql_install_db --user=mysql --basedir=/application/mysql --datadir=/data/3309/data

=================================================================================


1.1.4 啓動多個實例

mysqld_safe --defaults-file=/data/3307/my.cnf &

====================================================================


mysqld_safe --defaults-file=/data/3308/my.cnf &

====================================================================

mysqld_safe --defaults-file=/data/3309/my.cnf &


====================================================================


1.1.5 啓動失敗處理

touch /data/3309/mysql.log

touch /data/3308/mysql.log

touch /data/3307/mysql.log

chown -R mysql.mysql /data/330*

再次啓動多個實例便可。


===============進入實例===============================

mysql  -s   /data/3307/mysql.sock    #首次進入無密碼


mysql  -s   /data/3308/mysql.sock


mysql  -s   /data/3309/mysql.sock

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