How to configure NTP between Virtual Machines without using Vsphere Client
I have a group of 8 virtual servers of 5.5 ESXi without an Internet connection. There are virtual machines on each of these 8 virtual servers.
I did one of these 5.5 virtual ESXi host a NTP server by editing the file /etc/ntp.conf with below configuration and
started the ntpd daemon. He began to take the time to its local clock, here's the output of ntpq Pei
IP server 10.108.190.14
ip address of the client 10.108.190.15
Server /etc/ntp.conf
> > driftfile/var/lib/ntp/drift
> > server 127.127.1.0 maxpoll 4
> > fondant 127.127.1.0 stratum 10
| ntpq Pei
| refid distance st t when poll reach delay offset jitter
| ==============================================================
| * LOCAL (0). LIUX. 10 l 2 64 377 0.000 0.000 0.001
Then I edited the file /etc/ntp.conf on customers with below configuration but the customer would not synchronize with the server. He
wouldn t get response from the server. Here is the output of ntpq Pei
Customer /etc/ntp.conf
> > driftfile/var/lib/ntp/drift
> > server 10.108.190.14 iburst
| ntpq Pei
| refid distance st t when poll reach delay offset jitter
| ==================================================================
| 10.108.190.14 INIT. 16 u
Now, when I configure NPT Client/Server on virtual machines through the Configuration Option under Option Configuration time
in Vsphere Client everything works fine and the client and the server to synchronize with each other. I checked the file /etc/ntp.conf on both the client
and the server and it has a couple of restrict 127.0.0.1 and restrict the lines added by default kod nomodify etc.
So why NPT Server featured when enabled via Vsphere Client works very well, but it does not work when it is configured manually
in the virtual servers directly.
I was connected to a vCenter Server Appliance through the VSphere Client and enabled the synchronization of time of the NPT.
I really need to know how to configure the NTP server without using the Vsphere Client so that I can automate the
task by writing a python script that would connect to each virtual server and NTP Client/Server configuration.
Any help in this issue deeply appreciated!
Thank you!
You can configure the ntp server without using viclient.
Take a look @ http://kb.vmware.com/selfservice/documentLinkInt.do?micrositeID=&popup=true&languageId=&externalID=1003063
Hope this helps
-Assane
Tags: VMware
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