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Abiquo 4.6

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To configure an automatic response to changing demands for resources, you can scale out VMs, which is also called horizontal autoscaling. To scale out, the platform clones the base VM and deploys the clones. To scale in, the platform will delete clone VMs and undeploy the base VM. Scaling operations are subject to all standard platform constraints, such as privileges and allocation limits.

Scaling notes

  • Limitations:
    • The platform does not clone captured VMs, so you will need to create an instance and recreate the VM from the resulting template to use scaling groups. Create instances to save VM disks to templates
    • VApp specs do not support scaling groups. See What do specs save and create
    • You can push custom metrics for clone VMs but you cannot create alarms for cloned VMs that are part of a scaling group. This is because scaling groups have aggregate alarms that are associated with the base VM.
  • State of base VM: A scaling group with a deployed base VM would be destroyed if the base VM were deleted directly on the hypervisor. In contrast, a scaling group with an undeployed base VM is not vulnerable to interference at the hypervisor level