[ECS] [Container OOM]: Containers OOM with Amazon Linux 2023 ECS AMI

[rixwan-sharif]

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Tell us about your request ECS Containers are getting killed due to Out of Memory with new Amazon Linux 2023 ECS AMI.

Which service(s) is this request for? ECS - with EC2 (Autoscaling and Capacity Provider setup)

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard? We are deploying our workloads on AWS ECS (EC2 based). We recently migrated our underlying cluster instances AMI to Amazon Linux 2023 (previously using Amazon Linux 2). After the migration, we are facing a lot of "OOM Container Killed" for our services without any change on the service side.

Are you currently working around this issue?

• By increasing hard memory limit for now (we have more then 600 services , it's hard to do that for each of that)
• Rolling back to Amazon Linux 2 AMI