Centos 多个mysql数据库

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:

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/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:

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/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
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