[Openstack] Clock Drift

Tim Bell Tim.Bell at cern.ch
Sun Mar 25 19:40:06 UTC 2018


Are you snapshotting the VMs? We’ve seen some delays while the VM is paused and being snapshotted and then there is too much time difference for NTP to catch up again…

Tim

From: Tyler Bishop <tyler.bishop at beyondhosting.net>
Date: Saturday, 24 March 2018 at 18:37
To: Pablo Iranzo Gómez <Pablo.Iranzo at redhat.com>
Cc: "openstack at lists.openstack.org" <openstack at lists.openstack.org>
Subject: Re: [Openstack] Clock Drift

3 Sources.  CentOS NTP pool and 2 internal.

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On Fri, Mar 23, 2018 at 3:03 AM, Pablo Iranzo Gómez <Pablo.Iranzo at redhat.com<mailto:Pablo.Iranzo at redhat.com>> wrote:
+++ Chris Friesen [22/03/18 16:22 -0600]:
On 03/21/2018 08:17 PM, Tyler Bishop wrote:
We've been fighting a constant clock skew issue lately on 4 of our clusters.
 They all use NTP but seem to go into WARN every 12 hours or so.

Anyone else experiencing this?

What clock are you using in the guest?


And how many NTPD sources?




Chris


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