pw groupadd/useradd fail when the nscd cache is used for name/group resolution

[Adam McDougall]

Michael Proto wrote:
> On Mon, Jul 13, 2009 at 12:57 PM, Ulrich Spörlein<uqs at 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 at vgalu /usr/ports/databases/postgresql84-server]# pw group add pgsql -g 70
>>> pw: group disappeared during update
>>> [root at vgalu /usr/ports/databases/postgresql84-server]# pw group add pgsql -g 70
>>> pw: group 'pgsql' already exists
>>> [root at 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.