Use this procedure to update the NTP server configuration across VMware Cloud Foundation components.

SDDC Manager uses NTP servers to synchronize time between the components in the system. You must have at least one NTP server. When you update the NTP server configuration, SDDC Manager performs NTP configuration updates for the following components:
  • SDDC Manager
  • vCenter Servers
  • ESXi hosts
  • NSX Managers
  • NSX Edge nodes
  • vRealize Suite Lifecycle Manager
  • vRealize Log Insight
  • vRealize Operations
  • vRealize Automation
If the update fails, SDDC Manager rolls back the NTP settings for the failed component. Fix the underlying issue and retry the update starting with the failed component.
Note: There is no rollback for the vRealize Suite Lifecycle Manager. Check the logs, resolve any issues, and retry the update.

Updating the NTP server configuration can take some time to complete, depending on the size of your environment. Schedule NTP updates at a time that minimizes the impact to the system users.

This procedure uses the SDDC Manager UI.


  • Verify the new NTP server is reachable from the VMware Cloud Foundation components.
  • Verify the time skew between the new NTP servers and the VMware Cloud Foundation components is less than 5 minutes.
  • Verify all VMware Cloud Foundation components are reachable from SDDC Manager.
  • Verify all VMware Cloud Foundation components are in an Active state.


  1. In the SDDC Manager UI, click Administration > Network Settings.
  2. On the Network Settings page, click the NTP Configuration tab.
  3. To update the NTP servers, click Edit.
  4. Update the NTP configuration.
    1. Expand the Overview section, and click Next.
    2. Expand the Prerequisites section, and click Next.
    3. Expand the Edit NTP configuration section, update the NTP server, and click Save.