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On existing instances, this parameter can be changed, by editing the instance metadata service settings for the instance (go to Instance Details and click on Edit in the line Instance Metadata Service).
Only change the configuration to IMDSv2 if the image you launched the instance from supports it. Otherwise, you may not be able to connect to your instance. At Please note: at the time of writing, the official CentOS 7 image on OCI did not support the new feature. If you create an instance to be used as a host for a VE license server installation, verify the capabilities of the image used before you enable the new IMDSv2 feature.
Step 7: Click on Create to create your instance.
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