Centos 5.2下安装多个mysql数据库配置详解

一、编译安装第一个mysql 5.1.33

cd /opt

/usr/sbin/groupadd mysql

/usr/sbin/useradd -g mysql mysql -s /bin/nologin -d /usr/local/mysql

tar -zxvf mysql-5.1.33.tar.gz

cd mysql-5.1.33/

./configure --prefix=/usr/local/mysql/ --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-plugins=innobase

make && make install

chmod +w /usr/local/mysql

chown -r mysql:mysql /usr/local/mysql

cp support-files/my-medium.cnf /usr/local/mysql/my.cnf

cd ../

附：以下为附加步骤，如果你想在这台服务器上运行mysql数据库，则执行以下两步。如果你只是希望让php支持mysql扩展库，能够连接其他服务器上的mysql数据库，那么，以下两步无需执行。

①、以mysql用户帐号的身份建立数据表：

/usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql

②、启动mysql（最后的&表示在后台运行）

/bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/usr/local/mysql/my.cnf &

echo "/bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/usr/local/mysql/my.cnf &" >> /etc/rc.local

ln -s /usr/local/mysql/bin/mysql /sbin/mysql 

ln -s /usr/local/mysql/bin/mysqladmin /sbin/mysqladmin


mysqladmin -u root password 1234 --初始化root密码

mysqladmin -u root -p password 456 --修改root已设置好的密码

mysql -u root -p         --用新密码连接数据库

添加mysql帐户 

grant all on *.* to 

'mysql3306'@'%' identified by 'mysql3306';     --添加用户mysql3306用于远程管理mysql数据库

二、编译安装第二个mysql 5.1.33:

注:可以将第一个mysql的安装文件全部复制过来,为了熟练安装过程,这里就再来重新安装一遍

cd /opt

/usr/sbin/useradd -g mysql mysql3307 -s /bin/nologin -d /usr/local/mysql3307

tar -zxvf mysql-5.1.33.tar.gz

cd mysql-5.1.33/

./configure --prefix=/usr/local/mysql3307/ --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-plugins=innobase

make;make install

chmod +w /usr/local/mysql3307

chown -r mysql3307:mysql /usr/local/mysql3307

chmod -r 777 /usr/local/mysql3307

cp /usr/local/mysql/share/mysql/my-medium.cnf /usr/local/mysql3307/my.cnf

修改配置文件:

port = 3307                   --修改端口

socket = /tmp/mysql3307.sock       --修改sock

# here follows entries for some specific programs

# the mysql server

[mysqld]

port = 3307

socket = /tmp/mysql3307.sock

①、以mysql用户帐号的身份建立数据表：

/usr/local/mysql3307/bin/mysql_install_db --basedir=/usr/local/mysql3307 --datadir=/usr/local/mysql3307/data --user=mysql3307

②、启动mysql（最后的&表示在后台运行）

/bin/sh /usr/local/mysql3307/bin/mysqld_safe --defaults-file=/usr/local/mysql3307/my.cnf &

echo "/bin/sh /usr/local/mysql3307/bin/mysqld_safe --defaults-file=/usr/local/mysql3307/my.cnf &" >> /etc/rc.local

注:如出现 warning world-writable config file ' /usr/local/mysql3307/my.cnf' is ignored

解决办法:  chmod 644 /usr/local/mysql3307/my.cnf

mysqladmin -p 3307 -s/tmp/mysql3307.sock -u root password 1q2w3e --初始化root密码

mysqladmin -p 3307 -s/tmp/mysql3307.sock -u root -p password 1q2w3e --修改root已设置好的密码

/usr/local/mysql3307/bin/mysql -uroot -p -s/tmp/mysql3307.sock

添加mysql帐户 

grant all on *.* to 

'mysql3307'@'%' identified by 'mysql3307';     --添加用户mysql3307用于远程管理mysql数据库