Azure DNS for Failing back?

Manuji 40 Reputation points
2023-06-02T13:33:05.18+00:00

Hello Team,

We have our workloads running in East US and has internal DNS hosted as VM in the East US region. Can I use azure DNS if I am failing back from West US to East US if my internal DNS is down in East US?

Azure DNS
Azure DNS
An Azure service that enables hosting Domain Name System (DNS) domains in Azure.
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  1. VasimTamboli 4,775 Reputation points
    2023-06-02T15:35:14.5966667+00:00

    Hello Manuji,

    Yes, you can use Azure DNS as a backup or failover solution for your internal DNS if it becomes unavailable in the East US region. Azure DNS is a reliable and globally distributed DNS hosting service provided by Microsoft Azure.

    To set up Azure DNS as a backup for your internal DNS, you can follow these general steps:

    Create an Azure DNS zone: In the Azure portal, create a DNS zone for your domain or subdomain in Azure DNS. This zone will serve as the backup DNS zone.

    Configure DNS records: Add the necessary DNS records to the Azure DNS zone to match the records in your internal DNS. This includes any A records, CNAME records, MX records, etc., required for your workloads.

    Modify DNS settings: Update the DNS settings of your workloads or network configuration to include the Azure DNS zone as a secondary or tertiary DNS server. This ensures that if the internal DNS in the East US region becomes unavailable, the workloads will automatically failover to using Azure DNS for name resolution.

    Monitor and test: Regularly monitor the health of your internal DNS and verify that the failover to Azure DNS works as expected when the internal DNS is down. Conduct tests to simulate the failure scenario and confirm that name resolution is successful using Azure DNS.

    By implementing Azure DNS as a backup for your internal DNS, you add an additional layer of resilience to your DNS infrastructure. In the event of an outage or unavailability of the internal DNS in the East US region, your workloads can still rely on Azure DNS for name resolution.

    Remember to consider the DNS propagation time and ensure that the DNS records in Azure DNS are kept up to date with any changes made to the internal DNS.

    If you have any further questions or need more specific guidance, feel free to ask.

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