Learn how to resize your instance using the OpenStack Horizon interface.
As a result of increased activity, or simply new needs, your instance may not be able to meet this new burden due to a lack of resources. However, with the Public Cloud, you can increase the resources available to your instance, and this can be done with just a few clicks.
NOTE: Only upscaling is possible for classic models. In addition, this manipulation causes the instance to be shut down for the time of the operation.
Flex instances allow resizing to higher or lower models due to a locked single disk size.
Requirements
Instructions
Log into the Horizon interface, and make sure you are in the correct region. You can verify this in the top left corner.
Next, click on the Compute
menu on the left side and select Instances
. Select Resize Instance
in the drop-down list for the corresponding instance.
Template Selection Tab (Flavor Choice)
This section shows the current template (old flavor) and allows you to select a new template (new flavor) for the instance resource.
Flavor Details
In this section, you will see the resources associated with the new template you have chosen.
Project Limits
Under this section, you can view the occupied resources compared with the total resources allocated to the project.
NOTE: Please note that you cannot switch models when resizing an instance. A resizing can only be done from one Linux model to another Linux model, or from one Windows model to another Windows model.
Advanced Options
Use this section to manage the Disk Partition and Server Group.
Once the configuration is complete, click on Resize
.
Resizing a disk in Windows
When performing a resize for a Windows Instance, please note that the partition size is not automatically updated, so you will have to extend it using the disk manager:
- Right-click on the
Start
menu and launch the disk manager by clicking onDisk Management
:
- Right-click on the main partition, then click on
Extend Volume
.
- In the
Extend Volume Wizard
menu, click onNext
to proceed. In the next tab, choose the disk resources to extend and click onNext
.Once done, click on
Finish
to confirm your choice.
- The new disk size will then be displayed in the disk manager.
Go further
For more information and tutorials, please see our other Public Cloud support guides or explore the guides for other OVHcloud products and services.