AWS: 169.254.169.254

Instance metadata https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-data-retrieval.html

TOKEN=$(curl -s -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600")
curl --silent "-ec2-metadata-token: $TOKEN" http://169.254.169.254/latest/meta-data/iam/security-credentials/role-name

curl http://169.254.169.254/
curl -v http://169.254.169.254/

curl http://169.254.169.254/latest/meta-data/
[[1]]

curl http://169.254.169.254/latest/meta-data/instance-type
t3.medium

REGION=$(curl http://169.254.169.254/latest/meta-data/placement/region)

curl -X PUT http://169.254.169.254/api/token

curl http://169.254.169.254/latest/meta-data/local-ipv4

curl http://169.254.169.254/latest/meta-data/public-ipv4 

Related

• ipconfig
• aws ec2 modify-instance-metadata-options
• IMDS
• Terraform: user_data

See also

• 169.254.169.254
• IMDS, IMDS versions (IMDSv2), IMDS initiate session, ec2-imdsv2-check, aws ec2 modify-instance-metadata-options, /latest/meta-data, /latest/user-data, modify-instance-metadata-defaults
• AWS EC2, Amazon EC2 API, aws ec2, AWS::EC2, Amazon EC2 Spot Instances, CPU credits, Instance type, EC2 limitations, 169.254.169.254, Instance metadata and user data (IMDS), InstanceType, InstanceId, Amazon EC2 Auto Scaling, AWS EC2 Instance Connect, launch template, lifecycle, AWS Security group (SG), Amazon EC2 Recycle Bin, Amazon EC2 Mac Instances, Global View