Belated update on this one from another 'victim'...

Our CentOS and RHEL hosts don't have ruby-ldap, but we had the same problem,
with ldap-related assertion failures, including a couple of times outside of
a puppet run where ssh sessions would be terminated.

The fix: upgrade the version of nss_ldap to 253-37.el5_6.1 .

Bug details: https://bugzilla.redhat.com/show_bug.cgi?id=684889 and
https://bugzilla.redhat.com/show_bug.cgi?id=703831

Bug fix advisory:
http://rhn.redhat.com/errata/RHBA-2011-0514.html


On 26 April 2011 12:02, Matt Wise <w...@wiredgeek.net> wrote:

> Just following up on this a bit more. One additional thing I needed to do
> as well was install ruby-ldap. It wasnt installed by default, and caused all
> kinds of random failures that were hard to troubleshoot. Once installed, all
> the warning messages went away and the failures stopped.
>
> On Apr 19, 2011, at 8:14 AM, Matt Wise wrote:
>
> > Ok, for what its worth, I think I solved this a while back.. but I ran
> into it again the other day, and couldn't remember the fix. I found this
> thread again while searching around — so I figure I should update it so that
> everyone knows what went wrong.
> >
> > We are using not only local files, and LDAP for auth.. but we're using
> 'nsscache' as a backup if the LDAP service is down for any extended period
> of time. The problem seems to be that occasionally nsscache writes out its
> DB files in a way that upsets ruby's ldap library significantly. Disabling
> nsscache, or rebuilding its DB files from scratch seems to solve this
> problem.
> >
> > —Matt
> >
> > On Mar 16, 2011, at 8:46 PM, Daniel Pittman wrote:
> >
> >> On Wed, Mar 16, 2011 at 20:16, Matt Wise <w...@wiredgeek.net> wrote:
> >>
> >>> I've got a handful of nodes (3?) out of about 400 that are giving me
> grief... puppet will run either manually or in the service mode. However, in
> the service mode the puppet process dies after an hour or so. I got an
> strace of the failure:
> >>>
> >>> rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
> >>> rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
> >>> read(8, "", 4096)                       = 0
> >>> rt_sigaction(SIGPIPE, {0x1, [], SA_RESTORER, 0x31af00eb10},
> {0x31af88c700, [], SA_RESTORER|SA_RESTART, 0x31af00eb10}, 8) = 0
> >>> write(2, "ruby: ../../../libraries/libldap"..., 98ruby:
> ../../../libraries/libldap/result.c:113: ldap_result: Assertion `ld !=
> ((void *)0)' failed.
> >>> ) = 98
> >>> rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0
> >>> write(4, ":XMLRPC::WEBrickServlet:0x2afa17"..., 495) = 495
> >>> tgkill(1267, 1267, SIGABRT)             = 0
> >>> --- SIGABRT (Aborted) @ 0 (0) ---
> >>> +++ killed by SIGABRT (core dumped) +++
> >>> [root@bastion100 ~]#
> >>>
> >>> I'm running Puppet 2.6.5 on CentOS 5.5 x86_64... any thoughts?
> >>
> >> Something is making libldap unhappy, which is being used by Ruby, used
> >> in turn by Puppet.  Which triggers the unfortunate error handling
> >> behaviour of "abort the entire process now!!!" that I just *love* from
> >> libraries I depend on.
> >>
> >> So, I would go hunting for details about what causes that particular
> >> assertion to fire in the LDAP library you are using.  My guess would
> >> be that there is a bug in there, tickled by some particular data set,
> >> that those hosts hit, and that a newer release would probably fix it.
> >>
> >> Other that turning off LDAP in the Puppet code, there isn't likely
> >> much we can do about it.
> >>
> >> Daniel
> >> --
> >> ⎋ Puppet Labs Developer – http://puppetlabs.com
> >> ✉ Daniel Pittman <dan...@puppetlabs.com>
> >> ✆ Contact me via gtalk, email, or phone: +1 (877) 575-9775
> >> ♲ Made with 100 percent post-consumer electrons
> >
>
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