similar to: synchronizing clock on pvops domU

Is there a package to do this? Normally the hardware clock is set during shutdown if one is running ntpd. But if a long-running server shuts down unexpectedly, this isn't done, and the hardware clock might be off by a lot when it comes back up. So setting it periodically from a cron job could be useful. What do others do? Adding a one liner to /etc/cron.daily that invokes

Hey, I have rather new installation of xen, dom0 is running ntpd and is perfectly in time. All domU''s are ~23s in future. Running ntpd on the domU''s seem to have no effect, /proc/sys/xen/independent_wallclock appears to have no effect. I''m running xen-unstable and 2.6.16-rc4 in AMD64 box. Any tip would be appricated. Thanks, -- ++ytti

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=75 netfilter@linuxace.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |netfilter@linuxace.com Status|ASSIGNED |RESOLVED Resolution|

Hi. I run peridocally (from cron) on all of my machines 30 * * * * root /sbin/hwclock --systohc All of those machines in question take their time via NTP from the same local server, and that server gets its time from a ntp pool. Now I had to reboot a couple of them two days ago and to my surprise all had problems with the time upon booting. Here are the important files: [root at XXXXXX ~]

Hi everybody! I know this is an ultraknown issue, but in my case i think it is going beyond. As you may guess my domUs clocks go faster or slower They come with the same OS (Centos 5 2.6.18-92.1.18.el5 ) but each of them have a different clock speed. Why? Dom0 does not syncronize domUs : So i watched out looking for any solution.... First attempt: /proc/sys/xen/independent_wallclock = 0

Apologies for being late to the party with this... I finally found my old notes on this re: helping out a blind friend fix his centos box... log in as root cd /usr/share/timezone cd /usr/share/zoneinfo/America/ cp Los_Angeles /etc/localtime /usr/bin/rdate -s time.nist.gov /sbin/hwclock --systohc For more details, go to http://wiki.ehow.com/Change-the-Timezone-in-Linux - rh -- Robert

Hi all: I joined a samba4 DC to Win2k3. After run the samba-tool domain join command, all data migrate perfectly. BUT then when I create an object into either samba4 or win2k3, these objects are not replicated to the another DC. Then, I tried to obtain a kerberos ticket (kinit) and the output is: kinit: "Clock skew too great while getting initial credentials". Then I sync both CDs

Hello all, I''ve got a couple of questions about an issue I''m seeing in Linux HVM guests on 64-bit AMD systems. The clock is running slightly fast, and it builds over time at different rates on different guests to become an issue in virtual server pods we''re testing. I upgraded to Xen 3.2.0 from 3.1.2 recently but the issue hasn''t improved so far. I have a

Hi Is there a way i can trigger a script within a libvirt guest immediately after resume? E.g. i don't see any log message that indicates to a guest that it had been paused and was just woken up. The problem that i am trying to solve is that when i reboot the host (pausing all guests), the guests' system clocks are a few minutes late after resume. The guests RTC (current_clocksource =

Hello, I have a problem configuring the timezone on a CentOS 5.5 server. I would like the timezone to be Europe/Paris. I have followed the steps described here: http://www.wikihow.com/Change-the-Timezone-in-Linux I think I have changed the appropriate configuration files ( /etc/localtime, /etc/sysconfig/clock ), but the output of the ?date? command still indicates the timezone is EST. [root

Hello All, Consider a CentOS-5.1 Xen server (2.6.18-53.1.4.el5xen) hosting two domains running CentOS-5.1 (2.6.18-53.1.4.el5). One domain has a fairly accurate clock, the other domain has a clock that gains ungodly amounts of time, roughly one minute every two or three minutes. For a fix, one suggestion is to run this command in DomU: echo 1 > /proc/sys/xen/independent_wallclock This

Hi, I had the following problem today. Because of a misconfigured network switch one system suddenly didn't have any network. After a reboot (with the network still unavailable) NTPD refused to start. Most likely because the initial ntpdate failed to work. I find this troubling, because when the network was restored, NTPD could have resumed working (like I'd expect from a true

Hello, On a xenserver with several (39) domUs, we experience problems with the system clock of the domUs. The clock seems to drift away several seconds up to two minutes from the dom0 clock. We do have set independent_wallclock=0. According to the docs (i.e. http://wiki.xensource.com/xenwiki/InstallationNotes) that way domUs should use the dom0 clock, but apparently that''s not the case.

Does any know of a way to sync the hardware clock without a reboot? Graham Johnston Senior Network Analyst Westman Communications Group 204.725.4300 ext 382 johnstong at westmancom.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20060719/70ef23ce/attachment-0002.html>

Hi, using SLES10 I''m unable to synchronize the time of DomU with that of Dom0. There is a persistent offset of about 3 seconds! Here''s a small history (not actual output): remote refid st t when poll reach delay offset jitter rkdvmso1.dvm.kl 192.168.0.11 5 u - 64 1 0.136 -2977.1 0.099 *rkdvmso1.dvm.kl 192.168.0.11 5 u 2 64

Hello ! Just a quick question about time synchronization between xen dom0 and domUs... We''re running Xen 3.1 64-bit, with 32 and 64 bits linux guests. It''s up since 89 days and the domU''s time is around 5 minutes behind the dom0, which is updated via ntpdate... Any idea why it doesn''t sync the guests even that /proc/sys/xen/independent_wallclock is 0 ?

Hi all, finally I have managed to upgrade to Xen 4.0 (actually it reports Xen 4.1-unstable) and Debian''s Linux kernel 2.6.32-4-xen-amd64. Now I am wondering what happend to independent_wallclock. There is no more /sys/xen and sysctl complains error: "xen.independent_wallclock" is an unknown key Does anybody know more about this? Thanks + best regards, Stephan

Hi all, finally I have managed to upgrade to Xen 4.0 (actually it reports Xen 4.1-unstable) and Debian''s Linux kernel 2.6.32-4-xen-amd64. Now I am wondering what happend to independent_wallclock. There is no more /sys/xen and sysctl complains error: "xen.independent_wallclock" is an unknown key Does anybody know more about this? Thanks + best regards, Stephan

Hi, the date jumps within 30 seconds to a wrong value. ntp service is stopped at the beginning. Whereas hwclock seems more precise. [root at kerio ~]# service ntpd stop Shutting down ntpd: [ OK ] [root at kerio ~]# ntpdate 0.centos.pool.ntp.org 13 Mar 07:04:48 ntpdate[23003]: step time server 131.234.137.24 offset -3450.678273 sec [root at

I can't reboot a server to set the hardware clock to UTC time, but CentOS was installed with the assumption that the PC was running UTC. Is it possible to update the hardware clock to the right time and therefore allow CentOS to maintain the right time without rebooting? I am hoping to use this route for consistency versus changing how CentOS interprets the time so all servers are the same.