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Messaging Gateway on VMWare has time drift issues

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Article ID: 174699

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Updated On:

Products

Messaging Gateway

Issue/Introduction

  • The VMWare host and SMG are both configured to set the system time.
  • There is severe time drift or resets of server time that cannot be easliy explained.

Cause

When a VM host and guest OS both compete to control system time, anomolies can be introduced. In VM environments, this can either be done with the VM's daemon, or the client OS' daemon. Most virtualization experts agree the client OS should handle NTP. VMWare recommends that the guest OS time daemon controls the system clock.

Environment

SMG

VMWare ESXi 5.0+

Resolution

Disable time sync in VMWare host

For VMWare hosts, follow the steps in Timekeeping best practices for Windows, including NTP (1318) from VMWare. The section "VMware Tools Time Synchronization and Configuration" (section applies to any operating system) provides different ways to configure the VM host to disable time sync.

Configure NTP or manual time in SMG