vCenter Appliance deployment

[jflip21]

I have 2 ESX 6 servers in an isolated environment (no internet access or local DNS). I am trying to deploy the vCenter appliance 6.5 to manage them. All devices are on the same subnet. Deployment appears to make through Stage 1 but Stage 2 errors with just an "Internal Error". I've tried adding my vcenter FQDN to both the local vcenter appliance and the machine I am running the set up from as I thought it might be DNS related, but no success. Any ideas?

Thanks

[jflip21]

An update.. Once I added a local DNS server the install at least completed. I received an error when trying to login to vCenter though "Object reference not set to an instance of an object". I'm not sure if I am somehow deployed something wrong, or this software is just this touchy. But, I've moved away from the appliance and back to the Windows based vCenter. Plus, if we need a local DNS server anyway, I'll need another VM, so I might as well install the Windows version as my thought process. Let me know if I am missing something, otherwise we can consider this resolved.

Thanks

[rcporto]

See the DNS Requirements for vCenter Server appliance: DNS Requirements for the vCenter Server Appliance and Platform Services Controller Appliance

Before you deploy the vCenter Server Appliance or Platform Services Controller appliance with a static IP address, you must verify that this IP address has a valid internal domain name system (DNS) registration.