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Documentation Index

Fetch the complete documentation index at: https://docs.xloud.tech/llms.txt

Use this file to discover all available pages before exploring further.

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Overview

Resizing an instance changes its flavor — adjusting the vCPU, RAM, and disk allocation profile. The resize operation stops the instance, moves it to a host that satisfies the new flavor requirements if necessary, and restarts it. After the resize completes, a confirmation window allows you to accept or revert to the original flavor.
Resizing always requires a reboot. Schedule resize operations during a maintenance window for production workloads. For zero-downtime vertical scaling on supported instances, use Live vCPU/RAM Scaling — available through the Dashboard with no reboot required.
Prerequisites
  • An instance in Active or Shutoff status
  • The instance must not be locked
  • A target flavor with a root disk size greater than or equal to the current root disk
  • Sufficient quota for the new flavor’s vCPU and RAM requirements

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Resize Workflow

PhaseInstance StatusAction Required
Resize initiatedResizeAutomatic — no action required
Awaiting confirmationVerify ResizeConfirm or revert within the window
ConfirmedActiveInstance running on new flavor

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Resize an Instance

1

Open the Resize dialog

Navigate to Compute > Instances. Click the More dropdown on the instance row, then select Resize under the Configuration Update group.
The Resize action is only available for instances in Active or Shutoff status that are not locked. It is not available on the admin page or for bare metal instances.
2

Select a new flavor

The Resize dialog shows:
FieldDescription
InstanceCurrent instance name (read-only)
Current FlavorCurrent flavor details — vCPUs and RAM (read-only)
FlavorSelect a new flavor from the table
The flavor table uses the same architecture and category filters as the instance create wizard. Flavors that would exceed your quota are disabled.Real-time quota usage is shown for CPU and Memory (GiB).
3

Acknowledge the shutdown

Check the Forced Shutdown checkbox (“Agree to force shutdown”). This is required — the instance will be shut down during the resize operation.
4

Confirm the resize

Click Confirm. The instance transitions to Resize status.

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Confirm or Revert the Resize

After the resize completes, the instance enters Verify Resize status. You must confirm or revert within the confirmation window (default: 24 hours).
Navigate to Compute > Instances. The instance shows status Verify Resize. Click the More dropdown and select either:
  • Confirm Resize or Migrate — accept the new flavor permanently
  • Revert Resize or Migrate — roll back to the original flavor
After confirmation, the instance returns to Active status on the new flavor.

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Next Steps

Live vCPU/RAM Scaling

Scale vCPU and memory without rebooting on supported flavors

Launch an Instance

Create a new instance with the desired flavor from the start

Flavors

View available flavors and their specifications

Troubleshooting

Resolve stuck resize operations and confirmation timeouts