A while ago Amazon added Elastic Network Adapter (ENA) support to their cloud:
Now, when guest image has the appropriate kernel driver and the feature is enabled for the image the ENA adapter will be passed to the VM instead of a PV one on the appropriate instance types (x1.*, p2.*,...). The kernel part was done in the following BZ:
The driver is ready to be merged to the kernel. The other piece of the puzzle is enabling ENA support for AWS images we produce. I'm not entirely sure about the tooling we use but with awscli it is done by passing '--ena-support' key to 'aws ec2 register-image' command. (please see https://bugzilla.redhat.com/show_bug.cgi?id=1357491#c6).
This definitely sounds like cloud-init package. Since I'm not aware of anything that I could pass over to image-build
Also kickstart doesn't do anything with aws directly
Moving to respective/default owner of cloud-init.
Thanks for undestanding
(In reply to Lubos Kocman from comment #4)
> Moving to respective/default owner of cloud-init.
Guys, this has nothing to do with cloud-init and the content of the image. Kickstart file is also not related.
When we create AWS images we create metadata for them. In this metadata, for example, we specify billing product. Then the metadata is uploaded to AWS and images are registered. I don't know which tools we use for image registration on AWS but what we need is to change the metadata of our images.
I'm moving back to releng and adding Jay Greguske to the CC: list, I'm not sure that he's in charge but he definitely knows how our AWS images are produced.
I'll take this as it requires adding the --ena-support option into the rcm-aws tooling when it registers the AMI. There is nothing else needed in RHEL as long as the kernel modules are made available.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.