Can I create VM cluster in Azure 3 virtual machines in 3 different regions East US, Central, and West, and one Load Balance? Does Microsoft support this scenario ?

Ryan 60 Reputation points
2023-11-24T21:36:17.86+00:00

Can I create VM cluster in Azure 3 virtual machines in 3 different regions East US, Central, and West, and one Load Balance? Does Microsoft support this scenario ?

Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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  1. Adam Zachary 2,886 Reputation points
    2023-11-24T21:51:43.0366667+00:00

    Hi Ryan,

    You can indeed create a VM cluster across different Azure regions utilizing a cross-region load balancer. However, there are specific considerations and limitations you should be aware of, especially regarding IP configurations and frontend setups.

    Specifically, if you opt for a Global/Cross-Region Load Balancer for your VM cluster, keep in mind that the frontend IP configurations for such a setup are exclusively public; internal frontends are not supported as of now. This implies that the VMs within your cluster will be assigned public IP addresses, which will be accessible through the load balancer.

    The cross-region load balancer is designed to efficiently manage failover across your VMs in various regions. It achieves this using health probes and a geo-proximity load-balancing algorithm, ensuring traffic is directed to the healthiest and geographically nearest regional deployment.

    So, to summarize, Microsoft does support the creation of a VM cluster in Azure with VMs located in East US, Central US, and West US, all managed under a single load balancer. However, it's important to note that this configuration will result in your VM cluster having public IP addresses.

    You could consider placing a Web Application Firewall (WAF_v2) in front of your application for enhanced security. But if your requirement was for a completely private cluster, then this particular setup might not be feasible.

    I hope this helps clarify the capabilities and limitations of the Azure cross-region load balancer in your scenario. Let me know if you have any more questions!


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