mysql5.5编译安装

首先规划好

端口：3306
管理员名称：cool
安装基本目录：/usr/local/mysql
数据库目录：/data
二进制日志目录：/var/log/mysqld
延迟日志目录：/var/log/mysqld（延迟日志目录  这个还不怎么明白）
启动文件：/var/run/mysqld

添加mysql用户

#groupadd -r mysql

# useradd -r -g mysql -s /sbin/nologin mysql

#cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql  -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_EXTRA_CHARSETS=complex -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DWITH_SSL=yes -DWITH_EMBEDDED_SERVER=1 -DENABLED_LOCAL_INFILE=1 -DMYSQL_DATADIR=/data  -DMYSQL_TCP_PORT=3306

ENABLED_LOCAL_INFILE 是否开启客户端本地存储以减轻数据库的负载

#make

#make install

#ln -s /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

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

删除空密码、匿名的用户

mysql> delete from mysql.user where password='';
mysql> delete from mysql.user where user='';
mysql> flush privileges;

创建数据库管理帐户，允许远程用户访问。并将root更名为其他名称

mysql> CREATE USER 'cool'@'%' IDENTIFIED BY '123456';
mysql> GRANT ALL ON *.* TO 'cool'@'%' WITH GRANT OPTION;
mysql> RENAME USER 'root'@'localhost' TO 'cool'@'localhost';
mysql> flush privileges;

安全

除了管理员帐号外，不要把file, process, super，reload，shutdown,grant权限授予管理员以外的账号

update mysql.user set file_priv = 'N' Where User=user_name and host =
host_name
update mysql.user set process_priv = 'N' Where User=user_name and host =
host_name
update mysql.user set super_priv = 'N'Where User=user_name and host =
host_name
update mysql.user set reload_priv = 'N' Where User=user_name and host =
host_name
update mysql.user set shutdown_priv = 'N' Where User=user_name and host =
host_name
update mysql.user set grant_priv = 'N' Where User=user_name and host =
host_name