How to Configure an Azure Load Balancer?

In this article, we will see how to set up a Load Balancer in Azure. Load Balancer is a component that splits or divides network traffic across multiple application servers. It helps in the high availability of applications. In this article, we will configure a public load balancer that is accessible through the Internet.

Introduction to Azure Load Balancer

Azure Load Balancer is a component in Azure that helps in uniform distribution of load across services. There are mainly two types of Azure load balancers public and internal. It provides load balancing across various virtual machines, scale sets, and IP addresses.

Types of Azure Load Balancers

• Public Load Balancer: A load balancer that is exposed to the internet is the public load balancer.
• Internal Load Balancer: A load balancer that is only available inside the network and not available through the internet is the internal load balancer. It is mainly used for internal traffic splitting.

Health Checks In Azure

Health checks in azure helps in rerouting the traffics to available resources if any of the other resources are not available. Health checks continuously check for availability of resources depending upon specified threshold and time . If it finds an unhealthy resource it forwards the traffic to other healthy resource .

Steps to configure load Balancer in Azure

• We will first create a virtual network with Bastion host . This network will contain our Azure virtual machine VM's . In the search box on azure portal search for virtual networks and then click create.
• Specify your subscription and name for virtual network in your required region . Then click next to security tab . Under security tab specify the options as below . specify name for bastion and create new public ip for the same.