单机多实例-mysql

单机多实例- mysql

                           一般一个物理机上只跑一个mysql。单机多实例，就是让一台物理机上跑两个或更多个mysql。

　　虚拟软件：VMware-workstation10

　　操作系统：RedHatEnterpriseLinuxServer5.6-i386

　　    内核    ：2.6.18-238.el5

           安装包： mysql.i386 0:5.0.77-4.el5_5.4    mysql-devel.i386 0:5.0.77-4.el5_5.4    mysql-server.i386 0:5.0.77-4.el5_5.4

     依赖包：e2fsprogs-devel.i386 0:1.39-23.el5_5.1       keyutils-libs-devel.i386 0:1.2-1.el5            

             krb5-devel.i386 0:1.6.1-55.el5              libselinux-devel.i386 0:1.33.4-5.7.el5          

             libsepol-devel.i386 0:1.15.2-3.el5           openssl-devel.i386 0:0.9.8e-12.el5_5.7          

             perl-DBD-MySQL.i386 0:3.0007-2.el5       zlib-devel.i386 0:1.2.3-3

[root@localhost ~]# yum search mysql

[root@localhost ~]# yum install mysql.i386mysql-devel.i386mysql-server.i386 -y

[root@localhost ~]# service mysqld start

[root@localhost ~]# mysql

mysql> show databases;

[root@localhost ~]# ps -aux |grep mysqld

[root@localhost ~]# service mysqld stop

[root@localhost ~]# cp -rp /var/lib/mysql /var/lib/mysql1           递归、权限一起copy

[root@localhost ~]# cp -rp /var/lib/mysql /var/lib/mysql2

[root@localhost ~]# cp -r /var/lib/mysql /var/lib/mysql3

[root@localhost ~]# service mysqld start

[root@localhost ~]# /usr/libexec/mysqld --datadir=/var/lib/mysql1--user=root--pid-file=

                                 /var/run/mysqld/mysqld1.pid --socket=/var/lib/mysql/mysql1.sock --port=3307 &

[root@localhost ~]# /usr/libexec/mysqld --datadir=/var/lib/mysql2--user=root --pid-file=

                                 /var/run/mysqld/mysqld2.pid --socket=/var/lib/mysql/mysql2.sock --port=3308 &

[root@localhost ~]# /usr/libexec/mysqld --datadir=/var/lib/mysql3--user=root --pid-file=

                                /var/run/mysqld/mysqld3.pid --socket=/var/lib/mysql/mysql3.sock--port=3309 &

[root@localhost ~]# ll /var/lib/mysql3

[root@localhost ~]# chown -R mysql.mysql /var/lib/mysql3上面没连权限一起拷，这里就要改配置文件的所有者、组。

[root@localhost ~]# /usr/libexec/mysqld --datadir=/var/lib/mysql3 --user=root

                                 --psqld/mysqld3.pid --socket=/var/lib/mysql/mysql3.sock --port=3309 &

两种登陆mysql的方式：

[root@localhost ~]# mysql --socket=/var/lib/mysql/mysql.sock                                                              基于soket

[root@localhost ~]# mysql --socket=/var/lib/mysql/mysql1.sock

[root@localhost ~]# mysql --socket=/var/lib/mysql/mysql2.sock

[root@localhost ~]# mysql --socket=/var/lib/mysql/mysql3.sock

[root@localhost ~]# mysql -h 127.0.0.1 -P 3306                                     基于port

[root@localhost ~]# mysql -h 127.0.0.1 -P 3307

[root@localhost ~]# mysql -h 127.0.0.1 -P 3308

[root@localhost ~]# mysql -h 127.0.0.1 -P 3309

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