amzn-drivers | Official AWS drivers repository for Elastic Network Adapter | Microservice library
kandi X-RAY | amzn-drivers Summary
kandi X-RAY | amzn-drivers Summary
Official AWS drivers repository for Elastic Network Adapter (ENA) and Elastic Fabric Adapter (EFA)
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QUESTION
I'm trying to load the ena driver on a Ubuntu VM.
According to the documentation, my VM has the vif
low-performance driver:
ANSWER
Answered 2018-Nov-05 at 19:28If either aws ec2 describe-instances --instance-ids instance_id --query "Reservations[].Instances[].EnaSupport"
or aws ec2 describe-images --image-id ami_id --query "Images[].EnaSupport"
(where instance_id
is your (i-e04566365f208b6584
) instance id and ami_id
is your AMI's ID (ami-6365f208
)) doesn't return "True" something is not marked as supporting ENA.
If it's your instance. Stop it, and run aws ec2 modify-instance-attribute --instance-id instance_id --ena-support
to enable support and restart it. If it's your AMI, you'll either have to select an AMI that already has ENA support, or make your own from an instance that's been tagged (per above) as supporting ENA.
If your AMI already supported ENA, after running the above command, start it back up and ethtool -i eth0
should show support. If your AMI was the problem, you'll need to launch a fresh instance from an AMI that has ENA support.
Note that even though it says the AMI is optional, I've found that not to be the case. An AMI with support was required for me.
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