Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

ESXi NTP client time synch is not working

Posted on 2016-07-19
3
Medium Priority
?
223 Views
Last Modified: 2016-07-19
Problem: ESXi 5.5 NTP client is not getting NTP time from a Windows Server 2008 R2 that is set up as a NTP server via registry configuration. The NTP server configuration goes something like this here .

Firstly, here is the ntp.conf:
/etc/ntp.conf
Same problem if I use version 2 or if I specify no version at all.
Now I restart the ntpd service and check the log:
/etc/init.d/ntpd restart
Then I check the ntp synch and the system time.
ntpq -p
Obviously, the offset is huge and it is not getting better.

When I try synching time with Windows clients using w32tm /resync /force with the same NTP server as configured above, all works fine. I have tested by changing the time on the server, then synching the clients to the server. But this fails for the NTP client on the ESXi.

I tried disabling the firewall on the ESXi:
esxcli network firewall set --enabled false

Open in new window


Checked that the Firewall on the Windows 2008 R2 server was off in all its profiles.
Tested pinging the NTP server, it replied.

Everything should be OK, but the time is not synching on the ESXi.

Here is how looks like via the vSphere client:
vSphere client time settings
Any suggestions?
0
Comment
Question by:itnifl
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 123
ID: 41719840
have you tried an internet time source ?
0
 
LVL 11

Accepted Solution

by:
Richardson Porto earned 2000 total points
ID: 41720095
There are some issues to sync time between ESXi and Windows Server NTP servers, and some workaround are provided on the following KB article: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1035833

Have you already checked that KB ?
0
 
LVL 2

Author Closing Comment

by:itnifl
ID: 41720227
Yes, I was missing 'tos maxdist 30' in /etc/ntp.conf
0

Featured Post

Plug and play, no additional software required!

The ATEN UE3310 USB3.1 Gen1 Extender Cable allows users to extend the distance between the computer and USB devices up to 10 m (33 ft). The UE3310 is a high-quality, cost-effective solution for professional environments such as hospitals, factories and business facilities.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If we need to check who deleted a Virtual Machine from our vCenter. Looking this task in logs can be painful and spend lot of time, so the best way to check this is in the vCenter DB. Just connect to vCenter DB(default DB should be VCDB and using…
In this article we will learn how to backup a VMware farm using Nakivo Backup & Replication. In this tutorial we will install the software on a Windows 2012 R2 Server.
This tutorial will walk an individual through setting the global and backup job media overwrite and protection periods in Backup Exec 2012. Log onto the Backup Exec Central Administration Server. Examine the services. If all or most of them are stop…
This Micro Tutorial walks you through using a remote console to access a server and install ESXi 5.1. This example is showing remote access and installation using a Dell server. The hypervisor is the very first component of your virtual infrastructu…

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question