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| Automatically scale VMs |
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| Automatically scale VMs |
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Define a scaling group
Before you begin:
- Configure the base VM
- Ensure that you have enough resources in your virtual datacenter to deploy up to the maximum number of cloned VMs, especially IP addresses
To create
:- In virtual appliance view, select the VM, and from the menu on the VM icon, select the Create scaling group option
- Enter the scaling parameters and rules
- Click Save
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When you save the scaling group, Abiquo will mark the VM icon with the scaling group symbol and display the scaling group name. If the minimum number of deployed VMs are not present and the scaling group is not in maintenance, Abiquo will create clones of the base machine and deploy them to reach the minimum size. The number in the bottom right-hand corner of the icon is the number of running VMs in the scaling group, including the base machine.
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To open the scaling group and check its parameters, click the scaling group symbol in the top right-hand corner of the VM icon.
Trigger autoscaling
To trigger autoscaling operations, create an action plan with a scaling action for the VM with the scaling group. Then create triggers to run the action plan. See Manage Action Plans. When scaling, the platform will search for a rule that is valid for the specific time range, or for a default rule. It will create or delete/undeploy the number of VMs in the rule, then wait for the cooldown period before accepting another scaling request.
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Trigger autoscaling
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| Trigger autoscaling |
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| Trigger autoscaling |
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How the platform scales out a VM
To scale out, the platform does not deploy VMs that are undeployed in the scaling group. To clone the base VM, the platform will do the following:
- Create disks using the following:
- Copies of content of disks from the VM template
- Empty disks or volumes for each additional disk used in the VM
- Disk controllers used in the VM
- Apply ALL configuration used in the VM, for example:
- CPU and RAM
- Network connections of the same type (e.g. private network)
- Assignment of firewall policies and attachment to load balancers
- Chef recipes, backups, cloud-init, variables, and so on
- Metrics. The group of metrics from clone machines and the base machine (if it is deployed) can activate alarms in the base machine, even if it is not deployed
- Exception – Alarms: the scaling group has only one set of alarms in the base machine
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| How the platform scales VMs |
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| How the platform scales VMs |
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Perform maintenance on a scaling group
Maintenance mode temporarily disables autoscaling and enables you to make changes to your VMs (deploy, undeploy, delete etc.) and edit the scaling group. Note that you cannot delete the base VM without deleting the scaling group. Also you cannot create alarms for cloned VMs that are part of a scaling group, because the scaling group alarms are in the base VM. When you leave maintenance mode, Abiquo will apply your modifications to the scaling group, e.g. adding new rules. Then Abiquo will adjust the number of VMs in the group to within the minimum and maximum size range.
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| Modify a scaling group in maintenance mode |
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| Modify a scaling group in maintenance mode |
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Move a scaling group to another virtual appliance in the same virtual datacenter
To move in maintenance mode | to another virtual appliance |
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in the same virtual datacenter, click the Move VM button and select the new virtual appliance.Image Removed | | Move a scaling group to another virtual appliance |
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Restrict a scaling group
To restrict , move the scaling group to a restricted virtual appliance, by selecting the Restrict scaling group checkbox, or by selecting a restricted virtual appliance.
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Delete a scaling group
When you delete , Abiquo will place all the VMs in the virtual appliance as regular VMs and the scaling group constraints will no longer exist. To delete a scaling group, first put it into maintenance mode, then click the delete button.
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Manage scaling groups with the API
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