ElasticBeanstalk の EC2 内で、environment-name を取得するコマンド aws ec2 describe-instances \ --region `curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone | sed -e 's/.$//'` \ --instance-id `/usr/bin/curl -s http://169.254.169.254/latest/meta-data/instance-id` \ --query 'Reservations[0].Instances[0].Tags[?Key==`elasticbeanstalk:environment-name`].Value' \ | ruby -r json -e 'puts JSON.
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