https://help.ubuntu.com/lts/serverguide/mysql.html
http://www.cnblogs.com/wuhou/archive/2008/09/28/1301071.html
注：建议将/etc/apt/source.list中的cn改成us，美国的服务器比中国的快很多。
https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-16-04
https://help.ubuntu.com/lts/serverguide/mysql.html
http://www.cnblogs.com/wuhou/archive/2008/09/28/1301071.html
注：建议将/etc/apt/source.list中的cn改成us，美国的服务器比中国的快很多。
https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-16-04