You can use a DNS forwarder in NSX that centralises all DNS queries and redirects them to external DNS servers, which reduces network traffic. You can attach the DNS forwarder to the north-south gateway (ovh-T0-gw) or the east-west gateway (ovh-T1-gw), depending on your needs.
Discover how to configure a DNS forwarder.
- Being an administrative contact of your Hosted Private Cloud infrastructure to receive login credentials.
- A user account with access to the OVHcloud Control Panel.
- You need to have NSX deployed with a segment configured in your NSX configuration. Use our guide on Segment Management in NSX for more information.
We will create a DNS redirector and attach it to the north-south gateway (ovh-t0-gw), it will be usable on all segments of NSX.
DNS forwarder configuration
Through the NSX interface go to the
Networking tab and click on
DNS on the left in the IP Management section. Then click
ADD DNS SERVICE.
Enter this information :
Name : Your service name, such as
Tier-0/Tier-1 Gateway : Your North-South gateway
DNS Service IP : a private IP address not used in your segments, such as
Next, click the
three vertical dots below Default DNS Zone.
Add New Default Zone.
Fill in these values :
Name : The name of the zone, such as
DNS Servers : OVHcloud DNS server
Your DNS forwarder is active and usable on all your overlay or VLAN segments connected to your north-south gateway (ovh-t0-gw).
Editing the DHCP server to use a DNS forwarder
If you have configured DHCP servers in NSX as described in our DHCP Configuration guide, you have the option to modify the configuration to use the DNS forwarder in your DHCP configurations.
We will see how to modify the DNS server on the DHCP configuration of one of your segments.
Still from the
Networking tab, click
Segments on the left in the Connectivity section.
Then click on the
three vertical dots next to your segment and choose
Edit from the menu.
EDIT DHCP CONFIG.
X to the right of the existing DNS in the DNS Servers option to remove it from the configuration.
Add your DNS redirector IP address in DNS Servers as
192.168.200.1 and click
Your segment's DHCP settings now use the DNS forwarder you created earlier.
Having read this guide, you should be able to configure a DNS forwarder.