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Re: Connection limit and Superuser

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Connection limit and Superuser
Date: 2006-07-31 14:37:07
Message-ID: 44CE1593.70007@dunslane.net (view raw or flat)
Thread:
Lists: pgsql-hackers
Tom Lane wrote:

>Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
>  
>
>>Martijn van Oosterhout wrote:
>>    
>>
>>>Maybe someone should look into enabling slony to not run as a
>>>superuser?
>>>      
>>>
>
>  
>
>>That was my initial reaction to this suggestion. But then I realised 
>>that it might well make sense to have a separate connection-limited 
>>superuser for Slony purposes (or any other special purpose) alongside an 
>>unlimited superuser.
>>    
>>
>
>Actually, the real question in my mind is why Slony can't be trusted
>to use the right number of connections to start with.  If you don't
>trust it that far, what are you doing letting it into your database as
>superuser to start with?
>
>As for "connection-limited superuser", if you can't do ALTER USER SET
>on yourself then you aren't a superuser, so any such restriction is
>illusory anyway.
>
>  
>

As a protection against malice, yes. I think Rod was more interested in 
some protection against stupidity.

Maybe the real answer is that Slony should connect as a non-superuser 
and call security definer functions for the privileged things it needs 
to do.

cheers

andrew

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