Editing the Fault Domain for an Instance
You can change the fault domain where a virtual machine (VM) instance is placed.
A fault domain is a grouping of hardware and infrastructure that is distinct from other fault domains in the same availability domain. By properly leveraging fault domains you can increase the availability of applications running on Oracle Cloud Infrastructure. For more information and best practices, see Fault Domains.
You can change the fault domain for instances that use these shapes:
- VM.Standard.E3 series
- VM.Standard.E2 series
- VM.Standard2 series
- VM.Standard.B1 series
- VM.Standard1 series
- VM.GPU3 series
These shapes cannot be edited:
- VM.Standard.E2.1.Micro series
- VM.DenseIO1 series
- VM.DenseIO2 series
- VM.GPU2 series
- VM instances that run on dedicated virtual machine hosts
- Bare metal shapes
Required IAM Policy
To use Oracle Cloud Infrastructure, you must be granted security access in a policy by an administrator. This access is required whether you're using the Console or the REST API with an SDK, CLI, or other tool. If you get a message that you don’t have permission or are unauthorized, verify with your administrator what type of access you have and which compartment you should work in.
For administrators: The policy in Let users launch Compute instances includes the ability to change the fault domain for
an instance. If the specified group doesn't need to launch instances or attach volumes, you could simplify that policy to include only
manage instance-family, and remove the statements involving
Using the Console
Open the navigation menu. Under Core Infrastructure, go to Compute and click Instances.
- Click the instance that you're interested in.
- Click Edit.
- Click Edit Fault Domain. Then, select a new fault domain.
- Click Save Changes.
If the instance is running, it is rebooted.
Using the API
For information about using the API and signing requests, see REST APIs and Security Credentials. For information about SDKs, see Software Development Kits and Command Line Interface.
Use this API operation to change the fault domain for an instance: