Enable Driver ENA pada Instance EC2

Amazon EC2 memberikan kemampuan jaringan yang disempurnakan melalui Elastic Network Adapter (ENA). Untuk menggunakannya, Anda harus menginstal modul ENA yang diperlukan dan mengaktifkan dukungan ENA.

Requirements

General purpose

Compute optimized

Memory optimized

Storage optimized

Accelerated computing

Untuk mengaktikan dukungan ENA ada beberapa cara seperti berikut

Edit Instance attribute (enaSupport)

1. Stop instance
2. Ubah instance type yang mendukung ENA. Misal t3.micro

aws ec2 modify-instance-attribute \
--instance-id instance_id \
--instance-type t3.micro

3. Edit attribute

aws ec2 modify-instance-attribute --instance-id instance_id --ena-support

4. Cek attribut EnaSupport

aws ec2 describe-instances --instance-ids instance_id --query "Reservations[].Instances[].EnaSupport"

5. Jika respon true, maka Instance dapat Anda start

Register Image mengunakan snapshot

aws ec2 register-image --name image_name --root-device-name /dev/xvda --block-device-mappings DeviceName=/dev/xvda,Ebs={SnapshotId=snap-07727834796a6d224} DeviceName=
/dev/xvdb,Ebs={SnapshotId=snap-01d319f8a7223deac} --ena-support

Lalu luncurkan instance dengan tipe instance yang sudah mendukung ENA

aws ec2 run-instances --image-id ami-03b29257f3ffb6034 --instance-type t3.micro --key-name key_name

Test ENA

Test ENA apakah sudah aktif di instance

Kernel module

modinfo ena

Output

filename:       /lib/modules/4.14.33-59.37.amzn2.x86_64/kernel/drivers/amazon/net/ena/ena.ko
version:        1.5.0g
license:        GPL
description:    Elastic Network Adapter (ENA)
author:         Amazon.com, Inc. or its affiliates
srcversion:     692C7C68B8A9001CB3F31D0
alias:          pci:v00001D0Fd0000EC21sv*sd*bc*sc*i*
alias:          pci:v00001D0Fd0000EC20sv*sd*bc*sc*i*
alias:          pci:v00001D0Fd00001EC2sv*sd*bc*sc*i*
alias:          pci:v00001D0Fd00000EC2sv*sd*bc*sc*i*
depends:
retpoline:      Y
intree:         Y
name:           ena
...

Network interface driver

ethtool -i eth0

Output

driver: ena
version: 1.5.0g
firmware-version:
expansion-rom-version:
bus-info: 0000:00:05.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

Referensi

Enable enhanced networking with the Elastic Network Adapter (ENA) on Linux instances

Networking and storage features