Multiple DNS servers in the ESX Configuration

[khughes]

While we were doing some work over the weekend we found out we had a slight DNS issue. The last time we had a failure we realized that our DNS servers were both in our Virtual environment so we added a secondary DNS server on a physical box to solve that problem. What we didn't realize that we only programmed in the 2 DNS servers which were VM's in the configuration of ESX. Is there a away to add more than 2 DNS servers or should we keep one of the VM's as the primary DNS server and change the secondary to the physical box in case of failure?

Thoughts? Concerns? etc...

• Kyle

[AndreTheGiant]

A simple solution for small environment is use also a static host files.

Anyway you can simple add more DNS server to /etc/resolv.conf (into the COS of ESX).

Andre

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[Lightbulb]

The order they are listed in resolv.conf matters. So put the physical second that way you do not have to timeout twice when the VMs are down.

[khughes]

As a band-aid I edited the host file to point to the VirtualCenter server and pull the license file down so I could power on my VM's. I try not to rely on the hosts file because too often than not you type in something wrong and screw everything up. Thanks for the location of the nameserver file, I will probably go that route.

• Kyle

[khughes]

Thanks for the hint, good advice.

• Kyle