CentOS VM, NTP synchronization problems

Posted by Spirit on Server Fault See other posts from Server Fault or by Spirit
Published on 2013-04-03T07:58:01Z Indexed on 2014/08/23 22:24 UTC
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We have three CentOS 5.9 VMs on an ESX3.5 host.

Because of the nature of the services we provide it is required that the NTP time is synchronized and the time is correct on all three of them.

However one of them constantly drifts back each day for about 66 sec. So far none of us seems to understand as why is this happening.

We included the possibility that the VM may be somehow pulling the time from the host, however all of the three VMs have identical configuration settings and they did not have VMware tools installed.

Although I realize that this is probably a question of an internal matter and not to ask for on a forum, I would appreciate if anyone of you knows some CentOS NTP diagnostic routines that will help me to diagnose the problem and find a reliable solution.

I thank you for the assistance.

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