There may be times you need to change your server's DNS settings, either because you find they're misconfigured or because you want to use your own. Fortunately there isn't a lot of work involved in changing the DNS servers, just a quick edit in the right place.
Your server's DNS settings are bound to the public network interface, the one that talks to the rest of the world. We'll edit that interface's properties to make our change.
Go to the Control Panel, then open "Network and Sharing Center". Once there select "Manage network connections" from the left side of the window.
In the list of network connections right-click the "public" interface and select "Properties". Alternately you can double-click the "public" interface and find the Properties button in the status window that comes up.
In the new window select "Internet Protocol Version 4 (TCP/IPv4)" and click its "Properties" button.
The DNS servers are set in the bottom half of the dialog box you should see now. The settings you enter will depend on the location of your Cloud Servers.
If you're on Rackspace Cloud UK you can use our closest DNS servers by setting the DNS server entries to the following:
If your Cloud Server is in the US you should use:
Once you have your DNS servers set click OK. And you're done. No reboot required.
The easiest way to make sure your new settings are good ones is to try to ping a domain name:
ping -n 3 rackspace.com
You should see a result like:
Pinging rackspace.com [220.127.116.11] with 32 bytes of data: Reply from 18.104.22.168: bytes=32 time<1ms TTL=252 Reply from 22.214.171.124: bytes=32 time<1ms TTL=252 Reply from 126.96.36.199: bytes=32 time<1ms TTL=252 Ping statistics for 188.8.131.52: Packets: Sent = 3, Received = 3, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
If you get a "could not find host" message back you should double-check the IP addresses you set as your DNS servers.
It's that simple - change or add those name servers and once the settings are saved the system will use them right away. Make sure the changes take with a quick ping to test it and you'll be done.
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