1 安装mysql数据库

参考: http://www.jb51.net/article/58096.htm

  1) 查询已经安装的mysql:

  # rpm -qa | grep -i mysql
  mysql-libs-5.1.73-3.el6_5.x86_64 (系统自带,不删除)

  2) 删除旧的:

  //# rpm -e --nodeps mysql-libs-5.1.73-3.el6_5.x86_64

  3) 下载安装包:

  # wget ftp://pub:pub@pepstack.com/rpm/MySQL-server-5.6.27-1.el6.x86_64.rpm
  # wget ftp://pub:pub@pepstack.com/rpm/MySQL-devel-5.6.27-1.el6.x86_64.rpm
  # wget ftp://pub:pub@pepstack.com/rpm/MySQL-client-5.6.27-1.el6.x86_64.rpm
 

  4) 安装mysql数据库

  # rpm -ivh MySQL-server-5.6.27-1.el6.x86_64.rpm MySQL-client-5.6.27-1.el6.x86_64.rpm MySQL-devel-5.6.27-1.el6.x86_64.rpm
  error: Failed dependencies:
        libnuma.so.1()(64bit) is needed by MySQL-server-5.6.27-1.el6.x86_64
        libnuma.so.1(libnuma_1.1)(64bit) is needed by MySQL-server-5.6.27-1.el6.x86_64
        libnuma.so.1(libnuma_1.2)(64bit) is needed by MySQL-server-5.6.27-1.el6.x86_64
  # yum install numactl
  # rpm -ivh MySQL-server-5.6.27-1.el6.x86_64.rpm MySQL-client-5.6.27-1.el6.x86_64.rpm MySQL-devel-5.6.27-1.el6.x86_64.rpm
  # rpm -qa | grep -i mysql
  MySQL-server-5.6.27-1.el6.x86_64
  MySQL-client-5.6.27-1.el6.x86_64
  MySQL-devel-5.6.27-1.el6.x86_64

  # chkconfig mysql on

  5) 查看使用的my.cnf

  # mysql --help | grep my.cnf
 

  6) 复制一个my.cnf

  # cp /usr/share/doc/MySQL-server-5.6.27/my-default.cnf /etc/my.cnf
 
  7) 启动mysql server
  # service mysql start
  # cat /root/.mysql_secret
  # The random password set for the root user at Mon Apr 24 16:37:19 2017 (local time): 1VSt46KA3RHO1ZhJ

  # mysql u root -p1VSt46KA3RHO1ZhJ

  mysql> SET PASSWORD = PASSWORD('abc123');

2 更换mysql数据库的数据文件目录

默认在:
/var/lib/mysql

1) 查看datadir

  # mysqladmin -u root -p variables|grep datadir
| datadir                                                | /var/lib/mysql/
 

 2) 更换到 /data/mysql

  # mv /var/lib/mysql /data/
  # cp /usr/share/mysql/my-default.cnf /etc/my.cnf
 
  # vi /etc/my.cnf
  [client]
  port = 3306
  socket = /data/mysql/mysql.sock   (必须)
 
  [mysqld]
  port = 3306
  datadir=/data/mysql
  socket=/data/mysql/mysql.sock
 
  # vi /etc/init.d/mysql
  datadir=/data/mysql

启动mysql: 
  # service mysql start 
or
  # /etc/init.d/mysql start
查看数据库的目录:
  # mysqladmin -u root -p variables|grep datadir

Enter password:
| datadir                                                | /data/mysql/

结束!