AWS: 169.254.169.254

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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



 TOKEN=`curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` \ && curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/user-data

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

curl http://169.254.169.254/latest/meta-data/
curl http://169.254.169.254/latest/user-data

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

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