个人博客地址：Ubuntu 16.04用APT安装MySQL | 一张假钞的真实世界
安装MySQL
用以下命令安装MySQL:
sudo apt-get install mysql-server这个命令会安装MySQL服务器、客户端和公共文件。安装过程会出现两个要求输入的对话框：
- 输入MySQL root用户的密码。
- 指明是否创建test数据库。
启动/停止MySQL
安装之后，MySQL服务器会自动启动。用下面的命令检查MySQL服务器状态：
$ sudo service mysql status
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: active (running) since 日 2017-06-11 17:05:11 CST; 14min ago
Main PID: 11970 (mysqld)
CGroup: /system.slice/mysql.service
└─11970 /usr/sbin/mysqld
6月 11 17:05:09 frin systemd[1]: Starting MySQL Community Server...
6月 11 17:05:11 frin systemd[1]: Started MySQL Community Server.使用下面的命令停止MySQL：
sudo service mysql stop使用下面的命令启动MySQL：
sudo service mysql start连接/断开MySQL服务器：
使用root用户连接MySQL服务器：
$ mysql -h 127.0.0.1 -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.18-0ubuntu0.16.04.1 (Ubuntu)
Copyright (c) 2000, 2017, 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>使用以下命令断开连接：
mysql> quit
Bye创建数据库
创建Hive元数据使用的数据库hive。使用以下命令：
mysql> CREATE DATABASE hive;
Query OK, 1 row affected (0.03 sec)使用以下命令切换到hive数据库：
mysql> use hive;
Database changed使用以下命令创建用户hive，并授权：
mysql> use mysql;
Database changed
mysql> CREATE USER 'hive'@'%' IDENTIFIED BY 'hive@mysql123';
Query OK, 0 rows affected (0.04 sec)
mysql> GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP ON hive.* TO 'hive'@'%';
Query OK, 0 rows affected (0.01 sec)
mysql> CREATE USER 'hive'@'localhost' IDENTIFIED BY 'hive@mysql123';
Query OK, 0 rows affected (0.12 sec)
mysql> GRANT ALL ON hive.* TO 'hive'@'localhost';
Query OK, 0 rows affected (0.01 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)