Deploying Suse Linux Enterprise Server
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Configuring DNS and DHCP
Enabling DHCP for Dynamic DNS
Once you enable Dynamic Updates within the DNS Server, you now have to enable the DHCP server to write to the DNS Zones. To do this you must enter into the "Expert Settings" tab (if you haven't already done so yet). Be aware that once you enter the Expert Settings tab you will no longer be able to go back to the standard interface (although all the functionality is still present).
Using the DHCP Expert Settings Interface to Enable Dynamic DNS within the Subnet Config Screen
From within the Expert Settings interface, you will want to highlight the subnet that you want to enable Dynamic DNS to, then click on "Edit". On this screen there is a button named "Dynamic DNS", go ahead and press it.
The first dialog that should come up is the screen where you specify the TSIG Key. If not, you can access this screen using "Advanced - TSIG Key Management" from the Expert Settings Interface. Simply browse for the Key you created and click on Add.
Specifying the TSIG Key for the DHCP Server and Enabling Dynamic DNS within the Subnet
Once you added the TSIG Key, you will have access to the Dynamic DNS Interface Configuration Screen. Here you need to specify which TSIG Keys to use (if you have multiple ones), then specify which zones to update (ensure you add a period (.) at the end of the zones) as well as the IP Address of the DNS Server.
Note: The First time you edit these settings you must check the "Update Global Dynamic DNS Settings" checkbox for Dynamic DNS to update properly. For subsequent visits to this page you do not need to do this.
Once you finish with these settings, go ahead and close the Yast module and both the DNS and DHCP servers should automatically be restarted. The only thing left to do is restart a DHCP Client and check the DNS records to see if Dynamic DNS is working properly.
Note: Dynamic DNS will only work with Dynamic DHCP addresses. If you manually specify an IP Address for a DHCP Client, you must manually enter that address into the DNS Zones!
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