[37295] in Kerberos
RE: daily latency spike
daemon@ATHENA.MIT.EDU (Paul B. Henson)
Mon Nov 2 20:43:06 2015
From: "Paul B. Henson" <henson@acm.org>
To: "'Russ Allbery'" <eagle@eyrie.org>
In-reply-to: <87mvuxf2pf.fsf@hope.eyrie.org>
Date: Mon, 02 Nov 2015 17:42:46 -0800
Message-id: <1beb01d115d8$f1411ab0$d3c35010$@acm.org>
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> From: Russ Allbery
> Sent: Sunday, November 01, 2015 8:25 PM
>
> I assume you've already looked for daily cron jobs? It's common for LDAP
> servers to take a nightly LDIF dump for backups, for example, which would
> cause symptoms like this.
The latency occurs every 24 hours from when the service was last restarted;
I'm pretty sure I don't have any cron jobs that are scheduled based on the
last start time of the kdc process :). We do indeed do a daily LDAP dump for
backup purposes, but that has a fixed time to run. Given the way it occurs
every 24 hours after the service starts like clockwork, it feels like
something within the kdc itself? I was hoping somebody would jump up
immediately and say "oh yeah, it's such and such", barring that, I guess
we're going to need to start tracing the process activity during the latency
window and see if anything jumps out.
Thanks.
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