Describes Elastic IP addresses .Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/opsworks/describe-elastic-ips.html
| aws opsworks describe-elastic-ips --ips '*.*.*.*' |
| amazon web services - How to determine if an Elastic IP is attached - Server Fault : http://serverfault.com/a/887586 |