Linux Virtual Servers

Scott Ruckh sruckh at gemneye.org
Tue Apr 29 17:35:15 UTC 2008


---- Original Message ----- 
From: "Northrup, Wilson" <wilson_northrup at merck.com>
To: "General Red Hat Linux discussion list" <redhat-list at redhat.com>; "debu" 
<debajit_kataki at rediffmail.com>
Sent: Tuesday, April 29, 2008 6:50 AM
Subject: RE: Linux Virtual Servers


> How's your time synchronization over say, a week, on the linux servers
> running on ESX?  Are you running any RHEL 64bit?   Any drift?
>

I have never had much luck with clock synchronization (of Linux guest hosts) 
running 64-bit VMware Workstation on CentOS 4.6 server.  I have tried all 
the runtime kernel parameters, compiling custom kernels, using VMWare tools, 
and every other option I have found on the VMware site, but nothing has 
worked well for me.  I usually wind up setting up a cron job to synch to the 
server every 5 minutes or so.  Horrible hack, but it is the only thing that 
has worked for me.

On the other hand, I have had no issues with VirtualBox (with either Windows 
or Linux guests).  I run both VirtualBox guest and VMWare guest OSes 
side-by-side without too many issues.  I do not have any 64-bit guests, so I 
am not sure if things are better in that realm.

The clock synch issue in VMWare has always plagued me. 




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