在实例本身中获取EC2实例属性的最简单方法

Question

Can you guys show me how to retrieve instanceId, dns public name and type of current EC2 instance from where I'm running the code...

I'm playing with DescribeInstanceAttribute() , but it needs to supply the instanceId to the request, and I can't find how to get the id of currently running instance.

Answer 1

There's a webservice that returns machine information. Access

http://169.254.169.254/latest/meta-data/instance-id

To retrieve the instance id

The Instance Metadata Documentation can be handy.

Answer 2

There's a much easier method than making a web API call, the .NET SDK.

See the SDK documentation for EC2InstanceMetadata here

For example, if you need InstanceId you can use:

Amazon.Util.EC2InstanceMetadata.InstanceId.ToString();

All the other properties are available in a similar manner.

Note that the SDK used to have Amazon.EC2.Utils - this was deprecated in 2015 and moved to Amazon.Util namespace

Answer 3

您还可以使用AWS的Dot Net SDK ，例如Amazon.EC2.Util.EC2Metadata.InstanceId.ToString();