I am setting up a private dns zone in azure because we are moving our API management instance behind an application gateway. i enabled the vnet link between the zone and the significant Vnet, but it does not seem to be resolving, neither from the appgw and also not from a vm in the linked Vnet. What am i missing here?
Check if any resources is registered in private zone. Also it’s worth to check the dns settings on VNET, if it is pointing to default Azure DNS.
Related
I know that Azure private DNS zone should be linked to the VNET.
Does it apply to the Azure DNS zone as well? Should we integrate the azure dns zone with VNet? If not, how does the request reach the Azure DNS zone for name resolution?
Only Azure Private DNS zones need to be linked to Virtual Networks.
Azure DNS zones are supposed to be used for public name resolution so you would probably own the domain name and point it to Azure DNS resolvers so that the DNS records that you add to the zone can be queried publicly.
I found this post to be helpful.
We have a virtual machine created in Azure which is using a private VNet configured with custom DNS servers in order to domain join the VM (eg. contoso.com)
Now we have a private DNS zone (eg subdomain.contoso.com) created in Azure which is linked to the same VNet as the VM. However, we are not able to resolve the private DNS entries from within the domain joined VM as I believe, Azure query the Azure private DNS with the IP 168.63.129.16
Is there a way we can forward DNS requests from a VM in Azure VNet using custom DNS servers to Azure private DNS zone linked to the same VNet?
Any help is much appreciated. Thanks.
By using Azure Private DNS, you can resolve domain names in a virtual network without the need to add a custom DNS solution.
By using private DNS zones, you can use your own custom domain names rather than the Azure-provided names available today
Is there a way we can forward DNS requests from a VM in Azure VNet
using custom DNS servers to Azure private DNS zone linked to the same
VNet?
If you have created custom DNS private zone, you can enable Autoregistration feature so that DNS requests from your VM in the VNET will be forwarded to the Azure private DNS zone
VM and App Service are located in the same Virtual Network.
App Service is added to VM through VNet Integration (preview)
VM is autoregistered in Private DNS zone, say by name myvm1. And full name myvm1.priv.zone
Private DNS zone is linked to Virtual Network.
Virtual Network - DNS Servers is set to default.
VM and App Service were restarted after configuration.
Problem is I can resolve neither myvm1 nor myvm1.priv.zone from App Service console by nameresolver.exe
UPDATE:
Actually, the issue is even bigger. App Service is not able to send requests to VMs in Virtual Network by their Private IPs (10.1.x.x) even if everything is allowed on VMs' subnet. If the same requests are sent to VMs' Public IPs there is no problem.
As the existing answer, for scenario Name resolution from App Service Web Apps to VMs in the same virtual network. in this DOC, you need to deploy your own DNS server to help name resolution.
Here are the steps:
On the Azure VM in the VNet, add a server role DNS server, after the installation, configure the DNS server, add Zone name such as qaz.lab in my example. You also can manually add an A record for your Azure VM in this Zone.
Add the DNS server private IP address in the custom DNS server of Azure VNet. Then restart the Azure VM to make it effective.
Configure VNet Integration with your app, in this case, select the new VNet integration. After that, refresh your VNet Integration. You will see the DNS server update in your app service plan --- networking.
Navigate your app service, run nameresolver FQDN to validate the DNS resolution. Currently, It only supports FQDN resolution.
Let me know if you have any question.
As of today, you need to use DNS proxies or forwarders to achieve your ask. It is documented here in the scenario table.
For scenario "Name resolution from App Service Web Apps to VMs in the same virtual network.", the solution is to "Customer-managed DNS servers forwarding queries between virtual networks for resolution by Azure (DNS proxy)."
On How to perform "Name resolution with your own DNS" check here, where your scenario is described.
I have an Azure Container Instance with subnet configuration (I need to access an internal service). But I also need to configure dns.
I try to create the Container, but it returns this message: The IP address type can not be public when the network profile is set.
Is it possible to configure dns and configure the subnet in the same container?
Unfortunately, if you deploy the Azure Container Instances in the Subnet of a Vnet, then you cannot set the public IPs or DNS for it. Azure does not support it, at least now. Maybe it will be supported in the future. For more details, see Virtual network deployment limitations.
Container groups deployed to a virtual network do not currently
support public IP addresses or DNS name labels.
Hope this will help you.
The error with the network profile looks like a bug in the az
command tool. If you just specify your VNET name and subnet name
then it will create a network profile name.
If you want to use DNS
to resolve these names you'll need to setup DNS separately, and call
an additional az command to configure the DNS after you create the
container instance.
az network dns record-set a add-record ...
See this doc for using Azure DNS with private IP addresses.
Use Azure DNS for private domains
I have an azure network set up with the default Azure DNS.
All the VMs are ubuntu.
When I try to access another VM on the network via the public DNS name it resolves to the public IP.
How do I make it resolve to the internal IP when I request it from the virtual network (and obviously still resolve to the public IP when requested externally).
I'm interested in cli answers as well as configurations through the portal.
Azure DNS for IaaS and PaaS solutions
Please see this article for more information on Azure's own DNS service associated with virtual networks. In short
When role instances and VMs hosted in Azure need to resolve domain
names to internal IP addresses, they can use one of two methods:
Azure-provided name resolution
Name resolution that uses your own DNS server (which might forward queries to the Azure-provided DNS servers)
The type of name resolution you use depends on how your VMs and role
instances need to communicate with each other.
Azure DNS Private Zones (in preview)
There's also a relatively new service called, Azure DNS Private Zones that allow you to set up a private DNS service to be used with, for example virtual networks.
This service allows you to set up a private domain and private IPs for your machines. See this page for more information and some common usage scenarios.
Also, see this this feature suggestion:
Enable split DNS for providing both public and internal name resolution to VMs in the VNET