Hello, I have set as you say. I´ll be looking if I have problems with the time, Thanks for your answer ESG 2009/5/13 Schaffrath, Rene <Rene.Schaffrath@xxxxxxxxxxxxxx> > Hello, > > have you tried to set "xen.independent_wallclock=1" in > /etc/sysctl.conf (activate with sysctl -p). > > No time drifting in our domUs - even under very high cpu load... > > Hope this helps, > René > > > > -----Original Message----- > > From: redhat-list-bounces@xxxxxxxxxx > > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of ESGLinux > > Sent: Wednesday, May 13, 2009 9:14 AM > > To: General Red Hat Linux discussion list > > Subject: Xen virtual machines and ntp > > > > Hi, > > > > I´m running a Xen server with several virtual machines on > > it. I have a > > problem with the time of the machines. > > They unsynchronize very fast (in an hour several seconds). I > > try to use ntpd > > to syncronize them but It doesn´t work. > > > > I have set up a local ntp server with this ntp.conf: > > > > #grep ^[^#] /etc/ntp.conf > > restrict default kod nomodify notrap > > restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap > > server 1.rhel.pool.ntp.org > > server 2.rhel.pool.ntp.org > > server 127.127.1.0 > > fudge 127.127.1.0 stratum 10 > > driftfile /var/lib/ntp/drift > > keys /etc/ntp/keys > > restrict 1.rhel.pool.ntp.org mask 255.255.255.255 nomodify > > notrap noquery > > restrict 2.rhel.pool.ntp.org mask 255.255.255.255 nomodify > > notrap noquery > > server hora.roa.es > > restrict hora.roa.es mask 255.255.255.255 nomodify notrap noquery > > > > and the clients like this: > > > > restrict default kod nomodify notrap nopeer noquery > > tinker step 0 > > restrict 127.0.0.1 > > restrict -6 ::1 > > server 192.168.1.1 > > server 0.rhel.pool.ntp.org > > server 1.rhel.pool.ntp.org > > server 2.rhel.pool.ntp.org > > driftfile /var/lib/ntp/drift > > keys /etc/ntp/keys > > restrict 0.rhel.pool.ntp.org mask 255.255.255.255 nomodify > > notrap noquery > > restrict 1.rhel.pool.ntp.org mask 255.255.255.255 nomodify > > notrap noquery > > restrict 2.rhel.pool.ntp.org mask 255.255.255.255 nomodify > > notrap noquery > > restrict 192.168.1.1 mask 255.255.255.255 nomodify notrap noquery > > > > 192.168.1.1 is the first machine, the one I want to be the > > ntp local server. > > > > the param tinker step 0 I get from this > > http://wiki.dovecot.org/TimeMovedBackwards > > My real problem began with dovecot, because if the machine is not well > > syncronized the dovecot kills itself ( dovecot: Time just > > moved backwards by > > 8 seconds. This might cause a lot of problems, so I'll just > > kill myself now. > > http://wiki.dovecot.org/TimeMovedBackwards) > > > > > > so, I have two questions: > > > > 1 - Why my virtual machines unsynchronize so quickly? > > 2 - What am I doing wrong with ntpd? > > > > thanks in advance > > > > ESG > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=subscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > ---------------------------------------------------------------- > Mundipharma Vertriebsgesellschaft mbH & Co. KG > Mundipharma Straße 6 > 65549 Limburg (Lahn) > Tel: +49 (0)6431 701 0 > Amtsgericht Limburg (Lahn) HRA 624 > > Persönlich haftende Gesellschafterin: > Mundipharma Verwaltungsgesellschaft mbH, Sitz in Limburg (Lahn), > Registergericht Limburg (Lahn) HRB 462 > Geschäftsführer: > Mortimer D. Sackler M.D., Raymond R. Sackler M.D., > Richard S. Sackler M.D., Kathe A. Sackler M.D., > Jonathan D. Sackler M.D., Mortimer David A. Sackler, > Samantha S. Sackler-Hunt, Peter Boer, Åke Wikström, > Gunther Niederheide, Jürgen Feld (stellvertretend) > ---------------------------------------------------------------- > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subjecthttps://www.redhat.com/mailman/listinfo/redhat-list
