What is Virtual Machine scale sets?

by

It is an Azure compute resource that we can use to deploy and manage a set of identical VMs. It is easy to build large-scale services that target big compute, big data, and containerized workloads if all the VMs configured the same.

Virtual Machine Scale Sets (VMSS) in Microsoft Azure is a service that allows you to deploy and manage a set of identical, auto-scaling virtual machines. VMSS simplifies the deployment and management of a large number of VMs, making it easier to scale your applications. Here are key points about Virtual Machine Scale Sets:

  1. Auto-scaling: VMSS automatically adjusts the number of VM instances in the set based on demand or a defined schedule. This helps ensure that your application can handle varying workloads efficiently.
  2. High availability: VMSS distributes VM instances across fault domains and update domains to maximize availability and minimize downtime during planned maintenance or unplanned outages.
  3. Load balancing: VMSS comes with integrated load balancing to evenly distribute incoming network traffic across all instances in the set, ensuring efficient use of resources and optimal performance.
  4. Rolling upgrades: VMSS supports rolling upgrades, allowing you to update your application without downtime by gradually replacing instances in the set.
  5. Custom images: You can use custom VM images to create instances in the scale set, allowing for consistent configurations and application environments.