Difference between revisions of "AWS Instance Metadata Service (IMDS)"

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[[Wikipedia:AWS Instance Metadata Service]] it is a service provided by [[AWS]] that allows [[EC2]] instances to access metadata about themselves and their environment.
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* https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html
 
* https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html
  
  
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* [[Instance metadata and user data]]
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* <code>[[aws ec2 modify-instance-metadata-options]]</code>
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* [[IMDS versions]]: [[IMDSv2]]
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* [[IMDS initiate session]]
  
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If you use [[Auto Scaling groups]] and you need to require the use of IMDSv2 on all new instances, your Auto Scaling groups must use [[launch templates]].
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* [[Datadog AWS Integration Billing]]: If your EC2 instances are configured to require the use of Instance Metadata Service Version 2 (IMDSv2), then you must set the parameter <code>[[ec2_prefer_imdsv2]]</code> to true in your Datadog agent configuration to avoid double-billing.
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=== Metadata Endpoint ===
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<code> http://169.254.169.254/latest/meta-data/</code>
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== Example ==
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  TOKEN=`[[curl -X PUT]] "http://169.254.169.254/latest/api/token" [[-H]] "X-aws-ec2-metadata-token-ttl-seconds: 21600"` \ && [[curl -H]] "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/[[user-data]]
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== Activities ==
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* [[Transition to using Instance Metadata Service Version 2]]
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== Related ==
 
* [[Azure Instance Metadata Service]]
 
* [[Azure Instance Metadata Service]]
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* <code>[[ec2-imdsv2-check]]</code>, the rule is <code>[[NON_COMPLIANT]]</code> if the <code>[[HttpTokens]]</code> is set to optional.
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* <code>[[aws ec2 describe-instances]] | grep [[HttpTokens]]</code>
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* [[AWS EC2 Instance Connect]]
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* [[Datadog]]: <code>[[DD_EC2_PREFER_IMDSV2]]</code>
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* <code>[[Datadog: EC2 instances should enforce IMDSv2]]</code>
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* [[IMDS initiate session]]
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* <code>[[Failed to refresh cached credentials, no EC2 IMDS role found]]</code>
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== See also ==
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* {{IMDS cmd}}
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* {{IMDS}}
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* {{AWS EC2}}
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[[Category:AWS]]

Latest revision as of 09:19, 28 June 2024

Wikipedia:AWS Instance Metadata Service it is a service provided by AWS that allows EC2 instances to access metadata about themselves and their environment.



If you use Auto Scaling groups and you need to require the use of IMDSv2 on all new instances, your Auto Scaling groups must use launch templates.

  • Datadog AWS Integration Billing: If your EC2 instances are configured to require the use of Instance Metadata Service Version 2 (IMDSv2), then you must set the parameter ec2_prefer_imdsv2 to true in your Datadog agent configuration to avoid double-billing.

Metadata Endpoint[edit]

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

Example[edit]

 TOKEN=`curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` \ && curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/user-data

Activities[edit]

Related[edit]

See also[edit]

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