在 Ubuntu 14.04 下安装 mysql 5.7.20
mysql官网：http://dev.mysql.com/downloads/mysql
1：下载安装包
选择系统版本Ubuntu14.04后缀名为deb_bundle.tar的进行下载
https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-server_5.7.20-1ubuntu14.04_amd64.deb-bundle.tar
2：解压
1）、cd到目标路径：
2）、解压
tar -xf mysql-server_5.7.20-1ubuntu14.04_amd64.deb-bundle.tar
3、终端命令安装
1：准备工作：更新依赖源及安装libaio1依赖
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install libaio1
2：安装顺序
sudo dpkg -i mysql-common_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg-preconfigure mysql-community-server_5.7.20-1ubuntu14.04_amd64.deb（ 此步需要输入数据的root密码）
sudo dpkg -i libmysqlclient20_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i libmysqlclient-dev_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i libmysqld-dev_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-community-client_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-client_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-common_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i libmysqlclient-dev_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i libmysqld-dev_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-community-client_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-client_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-common_5.7.20-1ubuntu14.04_amd64.deb
3：安装依赖包
sudo apt-get -f install
sudo apt-get -f install libmecab2
4：安装mysql－server
sudo dpkg -i mysql-community-server_5.7.20-1ubuntu14.04_amd64.deb
sudo dpkg -i mysql-server_5.7.20-1ubuntu14.04_amd64.deb
4、检测安装及配置
1：utf-8设置
编辑文件 vi /etc/mysql/my.cnf 增加以下内容：
#以下是utf-8的设置
[client]
default-character-set = utf8
[mysqld]
default-storage-engine = INNODB
character-set-server = utf8
collation-server = utf8_general_ci
[mysql]
default-character-set=utf8
修改完成后重启mysql服务
/etc/init.d/mysql restart
2：检查安装设置
登录：mysql -u root -p
检查：status
参考资料：
http://blog.csdn.net/dst1213/article/details/52084379
