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NTP (Network Time) Appliance posted: Jun 5, 2006 12:31 AM

Click to view VMTN Admin's profile Expert 1,468 posts since
May 10, 2006
http://www.vmware.com/vmtn/appliances/directory/210

A hardened appliance, with Windows support, that will communicate with NTP servers around the world to keep current time.

Re: NTP (Network Time) Appliance

1. Oct 3, 2006 3:59 PM in response to: VMTN Admin
Click to view Dennis Parker's profile Lurker 5 posts since
Oct 27, 2004
Appliance built with an IDE drive so it can't be used in an ESX server environment. Makes this much less usable.

Re: NTP (Network Time) Appliance

2. Oct 19, 2006 6:45 AM in response to: VMTN Admin
Click to view jss27560's profile Novice 9 posts since
Jun 23, 2004
I installed the VM and the time is not correct. It shows the Universal time as what my local time is and the local time as 4 hours earlier when it should be 4 hours later.

Re: NTP (Network Time) Appliance

3. Oct 22, 2006 5:46 AM in response to: VMTN Admin
Click to view kamphor's profile Novice 19 posts since
Mar 2, 2006
Thank you for using my virtual appliance. Unfortunately, this appliance was published for the Summer 2006 VMware Challenge. The only virtualization software available *for* the Challenge was Workstation and GSX/Server. Thus, this appliance was specifically tailored for them and not for ESX server. I thoroughly tested obtaining correct time with all time zones before I published my entry into the contest. If an option exists in the vmware software for time synchronization between the host and guest machine, you may want to disable that function.

I lost all my development work for my challenge entry due to a hard disk failure. However, all that really needs to be done is to recompile a linux kernel specifically for the ESX virtual hardware and replace the one that boots in the ide configured virtual machine. I do not provide support for this appliance and wish you luck in any modifications you make to the appliance. For example, you are free to use whatever scripts I wrote and integrate them into an existing linux/unix box.

-Kamphor

Re: NTP (Network Time) Appliance

4. Nov 25, 2006 6:56 PM in response to: VMTN Admin
Click to view mfwade's profile Lurker 5 posts since
Feb 3, 2006
Can someone please provide me a link for the download. The TORRENT doesnt seem to work and I am really interested in this VM.

Thank you.

Re: NTP (Network Time) Appliance

5. Dec 7, 2006 3:10 PM in response to: mfwade
Click to view Goatie's profile Hot Shot 214 posts since
Nov 8, 2004
Hi,
I was interested in this until I too realised it was an IDE disk.

All VMware products allow the use of SCSI disks (Workstation, GSX and Server) and making your appliance on a SCSI disk allows it to be used in ESX as well.

Could you please rebuild it onto a SCSI disk so it is usable by the widest of users?

All appliances should be done on SCSI and not IDE.

Cheers,

Steve.

Re: NTP (Network Time) Appliance

6. Dec 7, 2006 7:36 PM in response to: Goatie
Click to view RDPetruska's profile Guru 15,875 posts since
Jan 11, 2005
All appliances should be done on SCSI and not IDE.
Actually, this is one of my main arguments for adding IDE disk support to ESX. I can't believe there is any technical reason they haven't done so. And now, with the big push for Virtual Appliances, as well as VDI - I don't understand why they haven't added IDE support yet.

Re: NTP (Network Time) Appliance

7. Dec 13, 2006 2:40 PM in response to: RDPetruska
Click to view Goatie's profile Hot Shot 214 posts since
Nov 8, 2004
Totally agree. It has screwed us up a bit. When we first started on the virtualisation track we had a server running VMware Workstation to try things out a bit. One of the guy's created a bunch of VMs, but used IDE disks so we had to rebuild them when we went to ESX.

Although IDE's already in there!!! It's the CDROM!

Most of the code's in there, they have just not made it available the extra step of making it a hard disk.

Re: NTP (Network Time) Appliance

8. Dec 13, 2006 7:11 PM in response to: Goatie
Click to view RDPetruska's profile Guru 15,875 posts since
Jan 11, 2005
Add your voice to this thread in the feature request forum, then... http://www.vmware.com/community/thread.jspa?threadID=62873&tstart=0 , and include a link to this thread for more concrete evidence of good reasons TO include the support in their Big Buck$ program.

Re: NTP (Network Time) Appliance

9. Oct 4, 2007 6:50 PM in response to: RDPetruska
Click to view penzipa's profile Lurker 1 posts since
Oct 4, 2007
Has this been ported over to scsi or does anyone know of another virtual machine that can be used as an ntp server

Re: NTP (Network Time) Appliance

10. Oct 18, 2007 6:04 AM in response to: penzipa
Click to view hicksj's profile Master 1,243 posts since
May 6, 2005

I'm currently debating placing our NTP source services on a VM. The system currently hosting NTP (and many other services) is a physical box, which is being replaced by a VM. I'm reluctant to run our time source on a VM due to time drift in the virtual world. How is time drift being addressed by this virtual appliance?

Or has time drift been adequately addressed within ESX, making this no longer a concern?

Re: NTP (Network Time) Appliance

11. Oct 24, 2007 2:08 PM in response to: hicksj
Click to view TylerApache's profile Novice 18 posts since
Mar 20, 2006
Apparently another "GOTCHA" with this appliance is that it has the old Daylight Savings rules in it. Anyone know how to update this appliance?

Re: NTP (Network Time) Appliance

12. Feb 2, 2008 6:11 AM in response to: TylerApache
Click to view kamphor's profile Novice 19 posts since
Mar 2, 2006

I posted an updated and stable version that should hopefully address the issues everyone has been having. It's posted in the community virtual appliances section.
or go directly to the page here- http://www.trawick.com/ntpvmapp.html

Thanks for the comments and feedback!

-Mervin Yap

slight problem with ntpd...

13. Feb 3, 2008 8:10 AM in response to: kamphor
Click to view kamphor's profile Novice 19 posts since
Mar 2, 2006
Hi all!

Just wanted to mention that there is a small problem with the appliance. After a few days of running, the ntpd process may kick out and stop. I will try to make a fix for this in the next few days and post an update for all 3 versions of the appliance.

I'll keep everyone posted on this discussion thread when the patch is applied and ready to download the tar balls.

-Mervin Yap

Re: slight problem with ntpd...

14. Feb 4, 2008 5:15 AM in response to: kamphor
Click to view hicksj's profile Master 1,243 posts since
May 6, 2005

Excellent! Good to see an updated appliance that will run on ESX. You briefly mention in your notes "more frequent polling" to address time drift issues. Is this the only method you're employing to keep time stable on the VM? Or are you also using any timeTracker options in the vmx config and/or other active processes within the VM?

Thanks & good luck tracking down and resolving the current issue you've found...

J


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