How to Get an AWS Instance ID with PHP, wget, or Curl

An AWS EC2 instance’s ID, among many other details, can be found in the instance’s meta data. Here’s how to retrieve an instance’s ID with wget, php, and cURL.

Note: The instance meta data can only be retrieved from an EC2 instance. If you try to query the instance-data URL from outside of an instance your request will not work.




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