SDDC Manager UI service fails to start after power outage in VMware Cloud Foundation
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SDDC Manager UI service fails to start after power outage in VMware Cloud Foundation

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Article ID: 441914

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Updated On:

Products

VMware vSphere ESXi VMware SDDC Manager / VCF Installer

Issue/Introduction

After a power outage or maintenance activity in a VMware Cloud Foundation (VCF) environment, the following symptoms occur:

  • Virtual Machines (VMs) appear as Invalid in the ESXi host client.
  • vCenter Server login is extremely slow.
  • The SDDC_MANAGER_UI service fails to start on the SDDC Manager appliance.
  • SDDC Manager is unable to ping the vCenter Server FQDN.

Environment

  • VMware Cloud Foundation
  • SDDC Manager

Cause

The SDDC_MANAGER_UI service requires functional DNS resolution to communicate with vCenter and other management components. If the DNS server VM is powered off or unreachable during the startup of management services, the UI service fails to initialize.

Resolution

To resolve this issue, ensure all infrastructure dependencies are powered on in the correct order:

  1. Power on the DNS server and verify it is responding to queries.
  2. Verify that the SDDC Manager appliance can resolve the vCenter Server FQDN using the ping command.
  3. Restart the SDDC Manager UI service: 
    systemctl restart SDDC_MANAGER_UI
  4. Log in to the SDDC Manager UI to verify access.
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