OCI Compute Instance Not Booting After Changing VNIC Attachment in Python SDK
I've searched everywhere and can't find a clear answer... I recently switched to I'm stuck on something that should probably be simple. I'm working with a critical scenario with an OCI Compute instance that refuses to boot after I changed its VNIC attachment using the Python SDK. Initially, the instance was working perfectly with its original VNIC configuration. However, following the modification, I am receiving a `401 Unauthorized` behavior when trying to access the instance via SSH. Here's a snippet of the code I used to change the VNIC attachment: ```python import oci client = oci.core.ComputeClient(config) # Assuming instance_id and new_vnic_id are defined try: update_vnic_details = oci.core.models.UpdateVnicDetails( vnic_id=new_vnic_id ) response = client.update_vnic_attachment(instance_id, update_vnic_details) print(response) except oci.exceptions.ServiceError as e: print(f'behavior: {e}') ``` After executing this code, I checked the console and found that the VNIC was updated successfully, but now the instance is not accessible. I also verified that the security list rules are still allowing ingress on port 22. The strange part is that the instance shows as `Running` but not responsive. I attempted to revert the VNIC change by using the `update_vnic_attachment` method again, but it seems the instance is in some state of limbo. I also tried stopping and starting the instance via the OCI console but to no avail. Is there a known scenario with the Python SDK and VNIC attachments? Any suggestions on how to troubleshoot this? Additionally, would there be any logs I could check to get more insights into why the instance isn't booting correctly after this change? I'm using Python SDK version 2.23.0. What's the best practice here? This issue appeared after updating to Python latest. Any ideas what could be causing this?