Knowledgebase: SolarCloud VPS
How do I manage Autoscaling for my VMs
Posted by Support on 23 August 2011 11:55 AM
VM autoscaling allows you to automatically increase the RAM, CPU and disk size of a virtual machine. VM resources are scaled based on the rules you specify. For example, you can set up a rule that will add 1000MB of memory to a VM if RAM has been above 90% for the last 10 minutes - but add no more than 5000 MB in total in 24 hours.

If the VM template allows resizing without reboot (see the Adjust (resize) VM resources KB), then virtual machine RAM and CPU will be increased without VM reboot. Disk space autoscaling requires a VM reboot.

To configure autoscaling:
  1. Go to your Control Panel’s Virtual Machines menu.
  2. Click the label of the appropriate VM.
  3. On the page that follows, click the Autoscaling tab.
  4. Add autoscaling rules, explained below:
    • If RAM usage exceeds  X% for a specific time period, add Y MB – but no more than Z MB in a 24 hour period.
    • If CPU usage exceeds X % for a specific time period, add Y% - but no more than Z% in a 24 hour period.
    • If disk usage exceeds X % for a specific time period, add Y GB - but no more than Z GB in a 24 hour period.
  5. Click Apply.
To delete an autoscaling rule:
  1. Go to your Control Panel’s Virtual Machines menu.
  2. Click the label of the appropriate VM.
  3. On the page that follows, click the Autoscaling tab.
  4. Click Delete. This will delete all autoscaling rules.

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