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

SDDC Manager uses DNS servers to provide name resolution for the components in the system. When you update the DNS server configuration, SDDC Manager performs DNS 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 DNS settings for the failed component. Fix the underlying issue and retry the update starting with the failed component.
Note: There is no rollback for vRealize Suite Lifecycle Manager. Check the logs, resolve any issues, and retry the update.

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

This procedure uses the SDDC Manager UI.

Prerequisites

  • Verify that both forward and reverse DNS resolution are functional for each VMware Cloud Foundation component using the updated DNS server information.
  • Verify that the new DNS server is reachable from each of the VMware Cloud Foundation components.
  • Verify all VMware Cloud Foundation components are reachable from SDDC Manager.
  • Verify that all VMware Cloud Foundation components are in an Active state.

Procedure

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