问题描述
我刚刚设置了Postgres，供网络上的其他用户使用。每个用户都有自己的用户名/密码/数据库，但是当我连接到Pg时，我还可以看到一个 postgres数据库（甚至创建表等）。我试图撤消公开访问该数据库的权限，但之后我无法连接。 postgres数据库到底是什么，为什么需要它？我可以禁用它，以便用户只看到我为他们创建的数据库吗？
I've just set up Postgres for use by different users on my network. Every user has his own username/password/database, but when I connect to Pg I can also see a 'postgres' database (and even create tables etc). I tried to REVOKE access to that database from public but then it won't let me connect. What exactly is the postgres database and why is it needed? Can I disable it so that users only see the database(s) I've created for them?
推荐答案
postgres数据库是在运行 initdb 时默认创建。
The postgres database is created by default when you run initdb.
没有什么特别的，如果不需要，可以将其删除：
There is nothing special about it, and if you don't need it, you can drop it:
drop database postgres;
您当然需要以超级用户身份进行操作。唯一的缺点是，当您以postgres操作系统用户身份运行 psql 时，需要显式提供一个数据库名称以连接到
You need to do that as a superuser of course. The only downside of this is that when you run psql as the postgres operating system user, you need to explicitly provide a database name to connect to
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