Date: Tue, 14 Jul 2009 13:31:43 +0100 From: Gavin Atkinson <gavin@FreeBSD.org> To: Adam McDougall <mcdouga9@egr.msu.edu> Cc: Michael Proto <mike@jellydonut.org>, 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: <1247574703.82683.17.camel@buffy.york.ac.uk> In-Reply-To: <4A5B7257.1010202@egr.msu.edu> References: <ad79ad6b0907090613t78cf8540n5fcd3934cadde526@mail.gmail.com> <20090713165717.GN2145@acme.spoerlein.net> <1de79840907131028n5b8f21deyd968639732c651a4@mail.gmail.com> <4A5B7257.1010202@egr.msu.edu>
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On Mon, 2009-07-13 at 13:43 -0400, Adam McDougall wrote: > Michael Proto wrote: > > On Mon, Jul 13, 2009 at 12:57 PM, Ulrich Sp=F6rlein<uqs@spoerlein.net> = wrote: > > =20 > >> On Thu, 09.07.2009 at 16:13:25 +0300, Vlad Galu wrote: > >> =20 > >>> 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 p= gsql -g 70 > >>> pw: group disappeared during update > >>> [root@vgalu /usr/ports/databases/postgresql84-server]# pw group add p= gsql -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. > >>> =20 > >> Just a me too. This is most likely because nscd is also caching negati= ve > >> lookups. The usual workaround would be to restart it using > >> /etc/rc.d/nscd restart > >> > >> =20 > > A slightly lower-impact alternative would be to use "nscd -i passwd" > > to invalidate the password cache. > > > > > I was intending to report this soon as well (its been on my list for a=20 > while) as a problematic > issue while installing ports. The other issue I had was Java would=20 > crash immediately if I had > nscd running (configured to cache YP). I plan to report that soon if it=20 > still happens with 1.6. > I probably tested with 1.4 or 1.5.=20 This is a known problem with nscd(8), see ports/125330 and bin/119695. If you have any further information (or even a patch) it's probably best to append it to the second of those PRs. Thanks, Gavin
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