samkeen/ec2-instance-subnet-id.md

Last active January 23, 2024 17:07

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Get the subnet and VPC id of a running EC2 instance

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ec2-instance-subnet-id.md

First get the Interface mac address, then use that to run the full command

INTERFACE=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/)
SUBNET_ID=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/${INTERFACE}/subnet-id)
VPC_ID=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/${INTERFACE}/vpc-id)

echo SUBNET_ID

Not sure this will work if you have more than one network interface

akhon commented May 11, 2021

Not sure this will work if you have more than one network interface

this is when you have multiple interfaces
INTERFACE=$(curl --silent http://169.254.169.254/latest/meta-data/network/interfaces/macs/ | head -n1)