问题描述:

最近在阿里云部署 Django(1.11.x) 时,在后台发布文章后,页面返回 500 异常。

刚开始的时候,遇到这个问题一脸懵逼,不知道该如何入手。后来把 settings.py 中 Debug=True ,然后运行网站,发现显示下面的错误信息:

Database returned an invalid datetime value. Are time zone definitions for your database installed?

看到这个信息后就知道该怎么入手解决了,手动点赞!

解决办法:

1. 确保 mysql 中相应时区设置为 SYSTEM

mysql> show variables like '%time_zone%';
+------------------+--------+
| Variable_name    | Value  |
+------------------+--------+
| system_time_zone |        |
| time_zone        | SYSTEM |
+------------------+--------+
2 rows in set, 1 warning (0.01 sec)

mysql> select now();
+---------------------+
| now()               |
+---------------------+
| 2018-01-20 01:02:00 |
+---------------------+
1 row in set (0.00 sec)

mysql> SELECT @@global.time_zone, @@session.time_zone;
+--------------------+---------------------+
| @@global.time_zone | @@session.time_zone |
+--------------------+---------------------+
| SYSTEM             | SYSTEM              |
+--------------------+---------------------+
1 row in set (0.00 sec)

2. 修改 settings.py 中时区配置信息

LANGUAGE_CODE = 'zh-hans'
TIME_ZONE = 'Asia/Shanghai'
USE_TZ = False

运行网站,大功告成!

参考链接:

Database returned an invalid datetime value. Are time zone definitions for your database installed?

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