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Load Balancer In Azure






Purpose







Components Of Load Balancer


  1. Backend pool - It is the pool of virtual machines. Load balancer distributes the load on the virtual machines present in the backend pool.
  2. Frontend IP - An IP address assigned to the load balancer. All requests will hit the frontend IP address and further the load balancer distributes the load on the virtual machines in the backend pool.
  3. Health probe - Checks the health of the virtual machine at a regular interval. If the virtual machine is not well, then the load balancer will not distribute the load on that virtual machine.
  4. Load Balancing Rule - A set of rules applied to the specific components of the load balancer.

Basic Vs Standard Load Balancer




Load balancer categoryVirtual machinesAvailability SetsScale Sets
Basic load balancerSingle virtual machineYesYes
Standard load balancerMultiple virtual machinesYesYes



Internal Vs External Load Balancer


Picture showing the representation of internal and external load balancer

Click to Enlarge






Steps Of Creating The Load Balancer




  1. Creation of a virtual machine.
  2. Creation of the public IP address.
  3. Create a load balancer with the public IP address.
  4. Setting different components of load balancer.
  5. Configure the backend pool
  6. Configure the health probe
  7. Configure the load balancing rules
  8. Test the load balancer



Creation Of A Virtual Machine




  1. "Availability options" are "Availability set".
  2. Picture showing selecting the Availability Sets while creating the virtual machine

    Click to Enlarge

  3. "Public IP" is set to "None".
  4. Picture showing disabling the public IP address while creating the virtual machine

    Click to Enlarge




Picture showing the list of virtual machines for the load balancer

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Creation Of The Public IP Address




Picture showing creation of the public IP address

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Create A Load Balancer With The Public IP Address




Picture showing  a screen for adding the load balancer

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Picture showing the create load balancer screen

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Picture showing the load balancer screen for associating the public IP address with the load balancer

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Configure The Backend Pool




Picture showing a screen for adding the backend pool inside the load balancer

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Picture showing the create backend pool screen inside the load balancer

Click to Enlarge


Configure The Health Probe




Picture showing a screen for adding the health probe inside the load balancer

Click to Enlarge



Picture showing the create health probe screen inside the load balancer

Click to Enlarge






Configure The Load Balancing Rules




Picture showing a screen for adding the load balancing rule inside the load balancer

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Picture showing the create load balancing rule screen inside the load balancer

Click to Enlarge


Test The Load Balancer




Picture showing the default of virtual machine 1

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Picture showing the default of virtual machine 2

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Posted By  -  Karan Gupta
 
Posted On  -  Saturday, May 8, 2021

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