在项目中使用 MySQL

安装

sudo apt install mysql-server

$ pip install gunicorn pymysql

安装过程中，系统会提示你为 MySQL 服务设置一个 root 密码。

安装完成后用以下命令进入数据库：

$ mysql -u root -p

输入密码后回看到这样的输出：

$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.24-0ubuntu0.18.04.1 (Ubuntu)

Copyright (c) 2000, 2018, 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>

---

修改配置文件

配置文件的路径在 /etc/mysql.my.cnf，需要修改配置可编辑该文件。

首先我们需要把数据库的编码改为 UTF-8，否则中文储存会出现乱码。

在配置文件添加以下代码：

[client]
default-character-set=utf8

[mysql]
default-character-set=utf8


[mysqld]
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8

现在使用 show variables like '%character%'; 命令查看数据库编码：

mysql> show variables like '%character%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | utf8                       |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | utf8                       |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.02 sec)