Update VMware ESXi host management IP in vSphere 6.7

Recently I had to update all the hosts in my cluster to a new IP to move them over to a different VLAN. There is a lot of information out there on how to do this, here is what worked for me.

  1. Turn off vSphere DRS/HA to prevent any kind of failover
  2. Migrate all VMs from host
  3. Put host into maintenance mode
  4. Disconnect host from vCenter
  5. Change management network TCP/IP settings using DCUI (KVM)
  6. Update DNS records for the host to reflect new IP
  7. SSH to vCenter and clear cache by restarting these services:
    systemctl restart systemd-resolved.servic
    systemctl restart dnsmasq
  8. Verify that you can ping host DNS from vCenter and that it resolves to correct IP
  9. Re-Connect host in vCenter
  10. Take host out of maintenance mode
  11. Load balance your VMs

Before you do this also review the relevant VMware KB here: https://kb.vmware.com/s/article/2084629

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