[Fedora-directory-users] slapd crash on replicate attempt
Richard Megginson
rmeggins at redhat.com
Wed Mar 7 21:03:04 UTC 2007
Justin Crawford wrote:
>>> One of the slapd processes just crashed again, and the logs on the
>>> second server show only the same replication error. I take
>>>
>> it to mean
>>
>>> the replication can't continue, because the slapd process
>>>
>> on the other
>>
>>> server has crashed.
>>>
>>> Anyway, today is the first time in 5 months that either of these
>>> servers has had any issue whatsoever.
>>>
>> Something must have changed. Even something that may appear at first
>> glance to be innocuous.
>>
>
> Agreed. The servers themselves were not patched immediately prior to
> the change; they did get some patches in the week before, but nothing
> that appears to have a direct connection.
>
> We did implement a new authenticating client application during the
> previous week. But I keep thinking that no client should be able to
> cause a slapd server crash (at least not without some evidence of
> intense load); therefore, a change to client applications does not
> strike me as a likely culprit.
>
>
>> Are you using VLV (browsing index in the console)?
>>
>
> Yes, on a few subtrees, but these tend to be created on the spot by
> administrators, and not managed strictly (should they be?). I suppose
> one of those could've been created on a subtree at any time, but I don't
> believe one was created in the days immediately prior to the crash. Why
> do you ask?
>
We've seen problems with VLV before.
> FYI, we rebooted the host machines last night and restared slapd with
> debug 1. Neither slapd process crashed today.
>
Please let us know if you can reproduce the crash. Running with debug 1
should help immensly, if you can afford the slowdown - running in debug
mode can really slow down production machines.
http://directory.fedora.redhat.com/wiki/FAQ#Troubleshooting
However, we do have a tool available that would allow you to run with
full debugging in a production environment. It buffers the log output
into a circular buffer of the last N lines, and you tell it how many N
is (e.g. 10,000). However, the server may perform well enough even with
debug 1, in which case you probably don't need it.
> Justin
>
> --
> Fedora-directory-users mailing list
> Fedora-directory-users at redhat.com
> https://www.redhat.com/mailman/listinfo/fedora-directory-users
>
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