Centos6.4中mysql 5.7 RPM安装

1. MySQL 下载地址：http://dev.mysql.com/downloads/mysql/
   选择版本：centos6 对应红帽的linux6
   Red Hat Enterprise Linux 6 / Oracle Linux 6 (x86, 64-bit), RPM Bundle 5.7.17 448.5M
   Download
   (mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar)

2. 解压： tar -xvf mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

3. 检查是否已安装：rpm -qa | grep mysql

4. 卸载已安装：rpm -e --nodeps mysql-libs-5.1.73-5.el6_6.x86_64

5. 安装顺序 ：
   rpm -ivh mysql-community-common-5.7.17-1.el6.x86_64.rpm
   rpm -ivh mysql-community-libs-5.7.17-1.el6.x86_64.rpm
   rpm -ivh mysql-community-client-5.7.17-1.el6.x86_64.rpm
   rpm -ivh mysql-community-server-5.7.17-1.el6.x86_64.rpm

6. 查看默认密码：grep "password" /var/log/mysqld.log

7. 启动mysqld服务：service mysqld start

8. 设置mysqld服务默认启动：chkconfig mysqld on

9. 登陆mysql : mysql -uroot -ppassword(修改成自己的密码)

10. 修改默认密码：SET PASSWORD FOR 'root'@'localhost' = PASSWORD('root');
    修改字符集：vim /etc/my.cnf ，在[mysqld]下新增一行，添加default-character-set=utf8，保存
    若修改密码报错 error 1819(HY000),则是由于当前的密码验证插件validate_password设置的级别过高。运行以下语句修改安全级别：
    set global validate_password_mixed_case_count=0;
    set global validate_password_number_count=3;
    set global validate_password_special_char_count=0;
    set global validate_password_length=3;
    再修改密码即可

11. 登陆mysql,查看字符集：show variables like "%character%";