ESX Host <FQDN> Hostname is configured as <incorrect FQDN> on the physical server and does not match the configuration file (Expecting <FQDN>)

Products

• VMware SDDC Manager

Issue/Introduction

• Error observed during the VCF deployment :  
  ESX Host esxi123 Hostname is configured as esxi on the physical server and does not match the configuration file (Expecting esxi123.example.com)
Remediation: Match the ESX Host esxi123.example.com Hostname on the physical server and in the configuration file

Environment

VCF 9.0

Cause

The error occurs due to a mismatch between the Fully Qualified Domain Name (FQDN) specified in the deployment specification and the FQDN configured on the ESXi hosts. The FQDN provided in the spec does not match the actual FQDN set at the host level during the VMware Cloud Foundation (VCF) deployment.

Resolution

• Ensure that the FQDN configured on each ESXi host exactly matches the FQDN specified in the deployment specification file.
• If the FQDN is correct, verify the /etc/hosts file on each ESXi host to ensure proper syntax:
  1. SSH to the host
  2. Run the command : cat /etc/hosts
  3. Check that the entries follow this format:

Syntax for /etc/hosts = [IP address] [Fully Qualified Domain Name] [Short hostname]

For example, 
#.#.#.# esxhost.domain.com esxhost