（1）在终端下执行sudo apt-get install mysql-server-5.6 命令
（2）一路按回车键，等安装好之后，再设置密码。
（3）安装成功之后，执行mysql -u root命令，进入数据库，如下：
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 12
Server version: 5.6.27-0ubuntu1 (Ubuntu)
Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
现在就可以设置root密码了，执行grant all privileges on *.* to root@"%" identified by "passwd" ;把密码设置为passwd。
腾讯云CentOS7.0使用yum安装mysql：http://www.linuxdiyf.com/linux/16624.html
CentOS 7.1上编译安装MySQL 5.7.10：http://www.linuxdiyf.com/linux/16538.html
Ubuntu14.04编译安装mysql5.6.26：http://www.linuxdiyf.com/linux/14453.html
Ubuntu安装mysql和简单操作：http://www.linuxdiyf.com/linux/14327.html
Ununtu 15.04安装MySql（Django连接Mysql）：http://www.linuxdiyf.com/linux/13783.html