??? mysql多實例是在一臺服務器安裝mysql數據庫軟件,配置不同的監聽端口,應用程序可以根據端口連接不同的數據庫,庫與庫互不影響.

1.下載和安裝mysql數據庫

[root@node3 ~]# wget http://mirrors.sohu.com/mysql/MySQL-5.6/mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz

[root@node3 ~]# tar xvf mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz? -C /usr/local/

[root@node3 ~]# cd /usr/local/

[root@node3 local]# mv mysql-5.6.23-linux-glibc2.5-x86_64/ mysql-5.6.23
[root@node3 local]# chown? -R root:mysql mysql-5.6.23/
[root@node3 local]# chown? -R mysql:mysql mysql-5.6.23/data/

[root@node3 local]# cd mysql-5.6.23/

[root@node3 mysql-5.6.23]# ./scripts/mysql_install_db --user=mysql --group=mysql --basedir=/usr/local/mysql-5.6.23 --datadir=/usr/local/mysql-5.6.23/data?

[root@node3 mysql-5.6.23]# cp -a my.cnf? /etc/
[root@node3 mysql-5.6.23]# cp -a support-files/mysql.server? /etc/init.d/mysqld

[root@node3 mysql-5.6.23]# chkconfig --add mysql

[root@node3 mysql-5.6.23]# chkconfig? mysqld on

2.修改配置文件

[root@node3 mysql-5.6.23]# vim /etc/my.cnf???? --其它的參數可以刪除,如果需要加參數可以在各實例選項中添加

[mysqld_multi]
mysqld=/usr/local/mysql-5.6.23/bin/mysqld_safe
mysqladmin=/usr/local/mysql-5.6.23/bin/mysqladmin
log=/var/log/mysql.log

[mysqld1]
socket=/tmp/mysql1.sock
port=3306
server-id=1
pid-file=/data/mysql1.pid
datadir=/data1
user=mysql

[mysqld2]
socket=/tmp/mysql2.sock
port=3307
server-id=2
pid-file=/data/mysql2.pid
datadir=/data2
user=mysql

[mysqld3]
socket=/tmp/mysql3.sock
port=3308
server-id=3
pid-file=/data/mysql3.pid
datadir=/data3
user=mysql

[mysqld4]
socket=/tmp/mysql4.sock
port=3309
server-id=4
pid-file=/data/mysql4.pid
datadir=/data4
user=mysql

[root@node3 mysql-5.6.23]#

3.創建數據目錄和初使化數據庫

[root@node3 mysql-5.6.23]# mkdir /data{1,2,3,4}??? --創建數據存放的文件夾

[root@node3 mysql-5.6.23]# chown -R mysql:mysql /data{1,2,3,4}???? --添加相應的權限

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/scripts/mysql_install_db? --user=mysql --group=mysql --basedir=/usr/local/mysql-5.6.23 --datadir=/data1 &?? --初使化數據庫

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/scripts/mysql_install_db? --user=mysql --group=mysql --basedir=/usr/local/mysql-5.6.23 --datadir=/data2 &

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/scripts/mysql_install_db? --user=mysql --group=mysql --basedir=/usr/local/mysql-5.6.23 --datadir=/data3 &

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/scripts/mysql_install_db? --user=mysql --group=mysql --basedir=/usr/local/mysql-5.6.23 --datadir=/data4 &

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/bin/mysqld_multi --defaults-extra-file=/etc/my.cnf start 1,2,3,4??? --啟動數據庫實例

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/bin/mysqld_multi? report? --查看實例是否啟動
Reporting MySQL servers
MySQL server from group: mysqld1 is running
MySQL server from group: mysqld2 is running
MySQL server from group: mysqld3 is running
MySQL server from group: mysqld4 is running

[root@node3 mysql-5.6.23]# netstat -antup | grep mysql
tcp??????? 0????? 0 :::3307????? :::*??????????????????????? LISTEN????? 22774/mysqld????
tcp??????? 0????? 0 :::3308????? :::*??????????????????????? LISTEN????? 22811/mysqld?????
tcp??????? 0????? 0 :::3309????? :::*??????????????????????? LISTEN????? 22801/mysqld?????
tcp??????? 0????? 0 :::3306????? :::*??????????????????????? LISTEN????? 22810/mysqld??????
[root@node3 mysql-5.6.23]#

4.登陸各實例,驗證各實例是互相獨立的
[root@node3 mysql-5.6.23]# mysqladmin -u root password 'system' -S /tmp/mysql1.sock? --修改初使密碼
Warning: Using a password on the command line interface can be insecure.
[root@node3 mysql-5.6.23]# mysql -u root -p? -S /tmp/mysql1.sock?? --登陸實例1
Enter password:
Welcome to the MySQL monitor.? Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.6.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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> create database tong;
Query OK, 1 row affected (0.02 sec)

mysql> \u tong
Database changed
mysql> create table t(a int);
Query OK, 0 rows affected (0.29 sec)

mysql> insert into t values(1);
Query OK, 1 row affected (0.05 sec)

mysql> exit
Bye
[root@node3 mysql-5.6.23]# mysql -u root -p? -S /tmp/mysql2.sock?? --實例2不能用實例1的密碼
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[root@node3 mysql-5.6.23]# mysqladmin -u root password 'system2' -S /tmp/mysql2.sock
Warning: Using a password on the command line interface can be insecure.
[root@node3 mysql-5.6.23]# mysql -u root -p? -S /tmp/mysql2.sock?? --實例2可以登陸了
Enter password:
Welcome to the MySQL monitor.? Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.6.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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> \u tong
ERROR 1049 (42000): Unknown database 'tong'
mysql> exit
Bye
[root@node3 mysql-5.6.23]#?

5.關閉單個實例

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/bin/mysqld_multi? stop 1-2

[root@node3 mysql-5.6.23]# /usr/local/mysql-5.6.23/bin/mysqld_multi? report ?
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 running
MySQL server from group: mysqld4 is running
[root@node3 mysql-5.6.23]#

轉載于:https://blog.51cto.com/tongcheng/1640977

總結

以上是生活随笔為你收集整理的mysql多实例配置使用方法的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。