AWS Certified Solutions Architect - Associate

• Use YubiKey security keys with AWS console
• AWS federated SSO using Google Apps
• https://aws.amazon.com/ec2/instance-types/
• https://docs.aws.amazon.com/cli/latest/userguide/cli-command-completion.html
• https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html

is_emr_master () {
  [[ "$(jq -r .isMaster /var/lib/info/instance.json)" == "true" ]]
}

aws_user_data () {
  curl -sSL "http://169.254.169.254/latest/user-data/$*"
}

aws_meta_data () {
  curl -sSL "http://169.254.169.254/latest/meta-data/$*"
}

aws_region () {
  declare az=""; az="$(aws_meta_data placement/availability-zone)"
  echo "${az%[a-z]}"
}