Managing Host Records
Please create Host records rather than separate forward (A) and reverse (PTR) records whenever possible.
Host records provide a unique approach to the management of IP based DNS, DHCP, and IPAM data by creating a type of record that ties forward and reverse records together.
In standard DNS, forward and reverse records are created separately and must be managed separately. Often, when forward addresses are removed, the corresponding reverse record is abandoned and may cause resolution issues down the road.
When you create a host record, you are specifying the name-to-address (forward) and Infoblox automatically creates the address-to-name (reverse) mappings for you. Infoblox then manages the forward and reverse as one record.
Add Host Records
You can add host records from the Toolbar of the IPAM, DHCP and DNS tabs of the Data Management tab and from the Tasks Dashboard. The best way to add records is to drill down to the actual zone you will be working on. For information about the Tasks Dashboard, see TheTasksDashboard on page 117 of the Infoblox NIOS Administrator Guide.
Be advised that a majority of the selections available when creating a Host record are left with default values in the University of Texas Austin environment.
A quick start set of instructions for creating a basic Host Record is provided in this section. If you would like to know more about the settings available when creating Host records, that information will provided in the next section.
Add a Host Record From Within The Zone - Quick Start
- After logging in to the Grid Manager, navigate to the DNS zone in which you will create a host record: Data Management → DNS.
- Your DNS zone will be a subzone of utexas.edu. In the Go to drop down, type in “utexas.edu” and select utexas.edu when it appears.
- You will see the utexas.edu DNS zone – a check mark will now be visible in the checkbox to the left of it and the zone will be highlighted in blue. Mouse over utexas.edu and click on it.
- Once you are within the utexas.edu authoritative zone, make sure you click on the Subzones tab.
- In the Go To search box, key in the name of your domain. For this example we will use the DNS zone that begins with “infobloxtest1” which will autofill the selection drop down. In our example the DNS zone is “infobloxtest1.utexas.edu” for which you substitute your DNS zone.
- Once you select your zone from the drop down selection list, it will appear in the pane below, highlighted in blue, with a check in the checkbox to the left. Click on your zone to open it.
- You will most likely be dropped into the Subzones tab - make sure you select the Records tab so you can view your DNS records.
- To add a host record:
- Click the down arrow to the right of the Plus button to the left of the central pane.
- Select Host and then Host again - there are two types, Host and Bulk Host. Bulk host will be discussed later.
- The Add Host > Step 1 of 3 window will appear. In the Name section, key in the preferred hostname. NOTE: Notice that the zone “Infoblox1.utexas.edu” is already next to the Name section. This is because we drilled down into the DNS zone rather than adding this entry from some other location within the DNS tab.
- Enter the hostname in the Name box.
- In the IPv4 Addresses section, Click on the Plus icon and select Add Address from the selection list. You can also chose Next Available IP if you are certain of the IP range(s) available to you.
- A new line will appear in the IPv4 Address section. Click to the right of the check box in the new line and key in the IP address of the host.
- Add a comment to the Comment section. (optional)
- Click Next at the bottom of the page.
- Click Next in the “Add Host > Step 2 of 3” window.
- Click Save & Close in the “Add Host > Step 3 of 3” window.
Modify Host Records
When you modify a Host record, you can do the following: - In the General tab, you can change the information you previously entered through the wizard, as described in Adding Host Recordsabove. - From Data Management -> DNS -> Zones** tab, locate the DNS zone and record you wish to modify - Select the A record by checking the box next to it, then click on the Edit button in the Toolbar pane to the right.
You can enter or edit items such as information in the TTL, Extensible Attributes and Permissions tabs. For information on modifying and deleting resource records, see Modifying, Disabling, and Deleting Host and Resource Records on page 847 of the Infoblox NIOS Administrator Guide.
For instructions on how to access Infoblox Online documentation such as the Administrator Guide, review the following document: Accessing Infoblox Documentation.