Azure Load Balancer

 *Azure Load balancer:-

We can use Azure Load Balancer to:-

1. Load Balance incoming internet traffic to your vm’s. This is known as Public Load Balancer.
2. Load balance traffic across vm’s inside a virtual network. This is known as Internal Load Balancer.
3. Port forward traffic to a specific port on specific vm’s.
4. Provide outbound Connectivity for vm’s inside your virtual network by using a Public Load Balancer.

Fundamental Load Balancer Features:-

Load balancer uses a hash-based algorithms for distribution of inbound flow and rewrites the headers of flow to backend pool instance accordingly.

By default, Load Balancer, uses 5-Tuple:-

5-Tuple hash Composed:-

1. Source ip.
2. Source port.
3. Destination ip.
4. Destination port.
5. IP protocols.

Azure Load Balancer Lab:-

Azure Public Load Balancer:-

Step1. Create two virtual machines.

             -- Webserver1

             -- Webserver2

Using same resources group, and region.

East US

Availability Set         — Create new 

Name                        — LoadBalanceSet, 2, 5, Ok.

                                  —  Image, size, user, pwd.

Select inbound port   — RDP, HTTP, HTTPS

                                  — Review + Create,   

                                       Create.                                    

                                  — Take RDP and Connect.

Step2. Go to Webserver1 and install Webserver (IIS) inside Server Manager.

— Go to C Drive       

—> inetpub     

—> wwwroot

— Create index.html file and write ‘Welcome to Windows Web Servers’ and delete existing files.

              — Do the same into VM2 as well.

              — Turn off windows firewall.

Step3. Go to browser inside vm’s only and type localhost inside URL and see the data.

Step4. Come to Azure portal and go to VM’s      

——> Networking 

——> NIC Public ip 

——> Dissociate 

——> Delete  (for both VM’s).

Step5. Go to Load Balancer     

— Create.

Name        — LB01

Standard, Public, Regional, 

Next.

— Add a frontend IP Configurations:

              Name         — FE-ip-01

              Public ip    — Create new

              Name         —  LB-pip, Ok, Add, Next.

— Add Backend pool:     

              BP-01, select VNet

              Select ip    — 10.0.0.4

              Select ip    —  10.0.0.5,      Save, Next

— Add Load Balancing Rule:      

              LB-Rule

              FE-ip-01

— Backend pool:

              BP-01, TCP, 80, 80

— Health probe:

              Create new    — HP-01

                                    — HTTP, Ok, Add.

Step6. Review + Create,    

— Create.   

Go to resource or LB and copy the ip and hit in the browser’s and see the details.

                

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