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Verifying time synchronization across environment

Purpose

This article guides you through the process of verifying that the time across the Virtual Infrastructure is synchronized. It also discusses ways of synchronizing time and ensuring that the time stays synchronized. 

Resolution

Verifying time on VMware ESX Server
 
To verify the time on an ESX host, enter the following command from the ESX host command line.
 
[root@esx-server-1 /]# date

 
Note: Ensure that right time zone and date are displayed.
 
Ensure that the time of the ESX host corresponds to the time of the VMware VirtualCenter Server and the domain.
 
Synchronizing time on VMware ESX Server.
 
If there are time discrepancies in the environment they time must be synchronized. The time can be set manually or kept synchronized using NTP server.
 
For synchronizing time using NTP, see Installing and Configuring NTP on VMware ESX Server (1339) .
 
For adjusting the time zone, see Adjusting ESX Server Time Zone (1436) .
 
 
To set the time from the ESX command line manually, use the date -s command .
 
For example, set new date to 12 Feb 2008 18:00:00, type the following command as root user:

[root@esx-server-1 /]# date -s "12 FEB 2008 18:00:00"
 
 
Time Synchronization on the VMware Virtual Center Server and Windows 2003 Domain.
 
To configure Microsoft Windows 2003 to use NTP time server please see the following Knowledge Base article from Microsoft. How to configure an authoritative time server in Windows Server 2003 (http://support.microsoft.com/kb/816042)
Link valid 2 July 2008. Please rate this article to report any issues with link.

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Actions
  • KB Article: 1003736
  • Updated: Aug 14, 2009
  • Products:
    VMware ESX
    VMware VirtualCenter
  • Product Versions:
    VMware ESX 3.0.x
    VMware ESX 3.5.x
    VMware VirtualCenter 2.0.x
    VMware VirtualCenter 2.5.x