Benjamin Franz schrieb:
nate wrote:
Akemi Yagi wrote:
for VMware products including ESX and ESXi. According to their current recommendations, " In all cases use NTP instead of VMware Tools periodic time synchronization."
I've been using vmware for 10 years, and I've never, ever ever gotten NTP to hold sync inside of a VM outside of using a VMI enabled kernel.
I've got more than 20 VMs spread over 5 machines (VMware Server 2.x), both 32 and 64 bit (hosts and VMs) that hold time perfectly using NTP.
- Make *SURE* that 'cpuspeed' and any BIOS 'power saving' modes are
disabled on your host and your VMs. Nothing screws timekeeping like having the CPU speed vary.
- Use 'divider=10' on your grub kernel boot lines for your virtual
machines.
That kernel parameter information is out of date with CentOS 5.4:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd...
As Akemi said, users of VMware virtualization products (bare metal hypervisor products like ESX/ESXi and the other solutions) should closely follow the KB article recommendations which are frequently updated.
Alexander