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Date:      Mon, 13 Jul 2009 13:43:51 -0400
From:      Adam McDougall <mcdouga9@egr.msu.edu>
To:        Michael Proto <mike@jellydonut.org>
Cc:        Vlad Galu <dudu@dudu.ro>, freebsd-stable@freebsd.org
Subject:   Re: pw groupadd/useradd fail when the nscd cache is used for name/group resolution
Message-ID:  <4A5B7257.1010202@egr.msu.edu>
In-Reply-To: <1de79840907131028n5b8f21deyd968639732c651a4@mail.gmail.com>
References:  <ad79ad6b0907090613t78cf8540n5fcd3934cadde526@mail.gmail.com>	<20090713165717.GN2145@acme.spoerlein.net> <1de79840907131028n5b8f21deyd968639732c651a4@mail.gmail.com>

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Michael Proto wrote:
> On Mon, Jul 13, 2009 at 12:57 PM, Ulrich Spörlein<uqs@spoerlein.net> wrote:
>   
>> On Thu, 09.07.2009 at 16:13:25 +0300, Vlad Galu wrote:
>>     
>>> I've stumbled upon this while installing postgres. In
>>> /etc/nsswitch.conf I had "group: cache files compat" and "passwd:
>>> cache files compat". Once I commented them out things started working
>>> again. Before the change, this is how it looked like:
>>>
>>> -- cut here --
>>> [root@vgalu /usr/ports/databases/postgresql84-server]# pw group add pgsql -g 70
>>> pw: group disappeared during update
>>> [root@vgalu /usr/ports/databases/postgresql84-server]# pw group add pgsql -g 70
>>> pw: group 'pgsql' already exists
>>> [root@vgalu /usr/ports/databases/postgresql84-server]#
>>> -- and here --
>>>
>>> Shouldn't 'files' be used upon a cache miss? If this is a PEBKAC,
>>> sorry for the noise.
>>>       
>> Just a me too. This is most likely because nscd is also caching negative
>> lookups. The usual workaround would be to restart it using
>> /etc/rc.d/nscd restart
>>
>>     
>
> A slightly lower-impact alternative would be to use "nscd -i passwd"
> to invalidate the password cache.
>
>
> -Proto
> _______________________________________________
>   

I was intending to report this soon as well (its been on my list for a 
while) as a problematic
issue while installing ports.  The other issue I had was Java would 
crash immediately if I had
nscd running (configured to cache YP).  I plan to report that soon if it 
still happens with 1.6.
I probably tested with 1.4 or 1.5. 



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