1Z0-1123-25 Question 55
Select 2You are in the process of migrating a set of Linux-based AWS EC2 instances to Oracle Cloud Infrastructure (OCI). You have prepared the VMDK exports of the AWS EC2 instances and uploaded them to an OCI Object Storage bucket. You plan to import them as custom images. Which two additional steps must you perform to ensure the instances launch and operate successfully in OCI?
- A
Ensure your AWS EC2 instances are running the latest version of the AWS Tools for Windows before exporting.
- B
Remove AWS-specific drivers and references (for example, cloud-init configuration pointing to AWS endpoints).
- C
Update the instance� network configuration to properly route traffic through OCI� default gateway.
- D
Switch the Linux repositories to Oracle Linux repositories before importing.
Show answer and explanation
Correct answers: B, C
Explanation
To migrate Linux-based AWS EC2 instances to OCI, you must convert the AWS instance to a supported format (e.g., VMDK), upload to OCI Object Storage, and then import it as a custom image. In addition, you must remove or update any AWS-specific components (such as drivers and cloud-init references) so the instance can interact with OCI� network and metadata. Correctly configuring the network settings (including gateways, routing tables, and DNS) for the new VCN environment is also essential. Refer to the OCI documentation on 'Importing a Custom Image' for best practices on ensuring a smooth migration.
- A. Incorrect.
Option 1: Incorrect. The question specifically mentions Linux-based AWS EC2 instances. Installing AWS Tools for Windows is unrelated and will not help with a successful migration of Linux instances.
- B. Correct.
Option 2: Correct. Linux images often include AWS-specific drivers and cloud-init configurations that rely on AWS metadata services. Removing or adjusting these references is necessary for the instance to function properly in OCI.
- C. Correct.
Option 3: Correct. When launching in OCI, the instance needs the correct network configuration for routing (default gateway, DNS) to match OCI� VCN settings. Failing to update routing can lead to unreachable instances.
- D. Incorrect.
Option 4: Incorrect. While switching to Oracle Linux might be desirable in some contexts, it is not a mandatory step to get a Linux image to boot and operate on OCI. OCI supports a variety of Linux distributions without requiring repository switches.