Accessing host metadata from ECS tasks
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I know that it's possible to access metadata about ECS tasks using the ECS task metadata endpoint. Is it possible to access the host metadata from a task if the task is running on an ECS EC2 instance? How about from an ECS Fargate task?
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Hello bwhaley,
If you are running your ECS task on ECS container instances (EC2 type), you can call the EC2 IMDS endpoint (http://169.254.169.254/latest/meta-data/instance-id) to get the host metadata.
However, this will not be allowed for ECS tasks running on ECS Fargate.
Hope this is helpful!
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Thanks. Quick follow up question: can the ECS task on EC2 then assume other roles and/or use the permissions of the host?
Answered the follow up question myself: https://aws.amazon.com/premiumsupport/knowledge-center/ecs-container-ec2-metadata/
Great, thanks for the update!