So far, you have configured the load balancer frontend part, but in this topic, you will learn how to configure the backend part, across which the traffic will be distributed:
- Navigate to the load balancer; under SETTINGS, click on Backend pools, as shown in the following screenshot:
Figure 6.12: Backend pools
- Click on Add, and a new blade will be opened, asking you to specify the following:
- Name: The name of the backend pool.
- IP version: Whether it is IPv4 or IPv6.
- Associated to: You can associate the load balancer with multiple VMs in an availability set, or a standalone VM, or a virtual machine scale set.
- Target virtual machine: Once you have decided which VM the load balancer will be associated with, you will note that more fields will be required to be filled. Since I've specified a single virtual machine in this scenario, I have to specify that machine.
- Network IP configuration: You should add the private IPs of the VM you have selected, and to do so, you need to click on Add a target network IP configuration:
Figure 6.13: Add the backend pool
- Once you have clicked on OK, it will take a couple of minutes to get it added.
Ensure that the VMs to which the load balancer is associated are not basic tier VMs and are in the same location as the load balancer.
For internal load balancers, only VMs within the same virtual network as the load balancers will be listed.
For internal load balancers, only VMs within the same virtual network as the load balancers will be listed.