We use ESX5i, the IPA servers are VMs and run ntp from our main ntp server, 
clients time sync to the IPA servers.

The only time we see time problems is with clients that do absolutely no work, 
then their time sometimes drifts excessively, we set the ticker panic to zero 
to get around that.

If ppl have better ideas I'd be pleased to hear them.


Steven Jones

Technical Specialist - Linux RHCE

Victoria University, Wellington, NZ

0064 4 463 6272

From: freeipa-users-boun...@redhat.com [freeipa-users-boun...@redhat.com] on 
behalf of Schmitt, Christian [c.schm...@briefdomain.de]
Sent: Wednesday, 10 July 2013 10:20 p.m.
To: natxo asenjo
Cc: freeipa-users@redhat.com
Subject: Re: [Freeipa-users] Virtual Machines??

Did you used the --no-ntp option or freeipa? or did you use the internal 
freeipa ntp?

2013/7/9 natxo asenjo <natxo.ase...@gmail.com<mailto:natxo.ase...@gmail.com>>
On 07/08/2013 03:49 PM, Schmitt, Christian wrote:
Hello, is there currently a good way to install FreeIPA or IdM in
virtual machines?
Currently we having some Windows Hyper-V Hypervisors since we are
planning to buy some Dell Hardware that can't run Linux yet, the Dell VRTX.
Also we want to reuse our Windows Server Datacenter Licenses.
Is there a good way to do it?

we run a fully virtualized IdM environment on ESX. We did run in time synch 
problems after a server was rebooted for updates, the time was way out of sync.

Running ntpdate to synchronize to the ntp server on boot with the 
/etc/sysconfig/ntpdate config file was the solution for us. the iburst option 
in ntp.conf works if your clock skew is not greater than 300 seconds, but then 
you do not have login problems either.


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