<html><body><div style="font-family: tahoma,new york,times,serif; font-size: 10pt; color: #000000"><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Adam King" <kinga@sghs.org.uk><br><b>To: </b>"Gary Hook" <garyrhook@gmail.com><br><b>Sent: </b>Friday, September 12, 2014 1:39:38 PM<br><b>Subject: </b>Re: [libvirt-users] ntpd in VM<br><div><br></div><div style="font-family: tahoma,new york,times,serif; font-size: 10pt; color: #000000"><div><br></div><div><span></span><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Gary Hook" <garyrhook@gmail.com><br><b>To: </b>libvirt-users@redhat.com<br><b>Sent: </b>Friday, September 12, 2014 1:25:47 PM<br><b>Subject: </b>Re: [libvirt-users] ntpd in VM<br><div><br></div><div dir="ltr">While I agree that running a time server in a VM is, at best, problematic, most of those nay-sayers have experience with VMware, xen and the like. Those aren't the only hypervisors out there, and the decision process should depend upon the hypervisor (to a significant degree), not just the idea of "can I do this in a VM?" Not all hypervisors are created equally.</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 12, 2014 at 7:14 AM, Pierre Schweitzer <span dir="ltr"><<a href="mailto:pierre@reactos.org" target="_blank">pierre@reactos.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br><div><br></div>
It is still a bad idea. I invite you to read here for the reasons why:<br><a href="http://serverfault.com/a/106509/150152" target="_blank">http://serverfault.com/a/106509/150152</a><br><div><br></div>
Cheers,<br><div><br></div>
On 09/12/2014 12:51 PM, Mauricio Tavares wrote:<br>
> I was taught in kitty school that running a ntp server in a vm<br>
> was a bad idea. Is that still the case?<br>
></blockquote><div><br></div><div><br></div><div>My experience is somewhat different. VMWare has always been problematic with this, especially Linux guests. </div><div>I've run KVM based NTP servers inside vm's (2 as active:standby) and dozens of ntp clients inside vm's for over a year now and seen no adverse results. </div><div>Admittedly I've not been checking the drift but I can vouch for the results. </div><div><br></div><div>Regards</div><div>Adam King</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br></blockquote></div></div></div></div></div><div><br></div></div></body></html>