Just put a cronjob on your vm’s Ntpdate -s ip And make sure in your ntp config you have your drift file configured
After that I never had issues with clock skew on any of my vm’s Also make sure your hosts are on max performance, and not lowering their frequency for throttling, as that made the problem worse for me From: Tim Bell <tim.b...@cern.ch> Sent: Sunday, March 25, 2018 23:40 To: Tyler Bishop <tyler.bis...@beyondhosting.net>; Pablo Iranzo Gómez <pablo.ira...@redhat.com> Cc: openstack@lists.openstack.org Subject: Re: [Openstack] Clock Drift 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.bis...@beyondhosting.net<mailto:tyler.bis...@beyondhosting.net>> Date: Saturday, 24 March 2018 at 18:37 To: Pablo Iranzo Gómez <pablo.ira...@redhat.com<mailto:pablo.ira...@redhat.com>> Cc: "openstack@lists.openstack.org<mailto:openstack@lists.openstack.org>" <openstack@lists.openstack.org<mailto:openstack@lists.openstack.org>> Subject: Re: [Openstack] Clock Drift 3 Sources. CentOS NTP pool and 2 internal. _____________________________________________ Tyler Bishop EST 2007 [http://static.beyondhosting.net/email/logo-sig.jpg] O: 513-299-7108 x1000 M: 513-646-5809 http://BeyondHosting.net<http://beyondhosting.net/> This email is intended only for the recipient(s) above and/or otherwise authorized personnel. The information contained herein and attached is confidential and the property of Beyond Hosting. Any unauthorized copying, forwarding, printing, and/or disclosing any information related to this email is prohibited. If you received this message in error, please contact the sender and destroy all copies of this email and any attachment(s). On Fri, Mar 23, 2018 at 3:03 AM, Pablo Iranzo Gómez <pablo.ira...@redhat.com<mailto:pablo.ira...@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 _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack -- Pablo Iranzo Gómez (pablo.ira...@redhat.com<mailto:pablo.ira...@redhat.com>) GnuPG: 0x5BD8E1E4 Senior Software Maintenance Engineer - OpenStack iranzo @ IRC RHC{A,SS,DS,VA,E,SA,SP,AOSP}, JBCAA #110-215-852 RHCA Level V _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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