[英]PostgreSQL & Heroku - cannot connect to the database
I'm trying to add a column to a table via my Django app with South but keep getting the following error upon running the python manage.py migrate <app name>
command: 我正在尝试通过使用South的Django应用程序向表中添加一列,但是在运行
python manage.py migrate <app name>
命令时python manage.py migrate <app name>
出现以下错误:
conn = _connect(dsn, connection_factory=connection_factory, async=async)
psycopg2.OperationalError: could not translate host name "ec2-107-21-99-105.comp
ute-1.amazonaws.com" to address: Temporary failure in name resolution
Does anybody have an idea why this is happening? 有人知道为什么会这样吗? I'm a newbie to both South AND the PostgreSQL database management system (which Heroku uses), so I am more than a bit confused.
我既是South还是PostgreSQL数据库管理系统(Heroku使用)的新手,所以我很困惑。
Make sure you have defined your default database in settings.py
like this: 确保已在
settings.py
定义了默认数据库,如下所示:
DATABASES = {
'default': dj_database_url.config(default=os.environ.get('DATABASE_URL'))
}
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