Load balancers on Availability set

Arbina Inamdar 81 Reputation points

When Load balancers are created on Virtual Machine scale set, do load balancers consider the VMs which are added as part of scale up.

For example, if the load balancers are configured on VM scaleset, now the VMs are added in the scale set, do the load balancers distribute the traffic among the newly added VMs automatically? Or this has to be handled manually?

Also if the new VM is added on Availability set, does the load balancer consider this newly added VM or we have to add this VM in load balancer manually?

Azure Load Balancer
Azure Load Balancer
An Azure service that delivers high availability and network performance to applications.
279 questions
Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets
Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.
229 questions
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Accepted answer
  1. Alan Kinane 16,541 Reputation points MVP

    For VM scale set - yes, as you associate the scale set resource as the backend pool so this will get updated automatically as you scale out.


    For availability sets, no this is for VM resiliency and as you must associate each individual VM nic with the Azure load balancer it will not automatically add new VM nics to the backend pool so this is manual.

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