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

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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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* [[IMDSv2]]
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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 ec2_prefer_imdsv2 to true in your Datadog agent configuration to avoid double-billing.
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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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== Related ==
 
* [[Azure Instance Metadata Service]]
 
* [[Azure Instance Metadata Service]]
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* [[Instance metadata and user data]]
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* [[IMDSv2]]
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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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* [[IMDS initiate session]]
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* <code>[[Failed to refresh cached credentials, no EC2 IMDS role found]]</code>
  
 
== See also ==
 
== See also ==
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* {{AWS}}
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* {{IMDS}}
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* {{AWS EC2}}
  
 
[[Category:AWS]]
 
[[Category:AWS]]

Latest revision as of 11:04, 26 February 2024


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.
 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

Related[edit]

See also[edit]

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