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Flatcar Container Linux is a lightweight operating system optimized for running containers. Designed for use in modern distributed infrastructure, Flatcar is automatically updated with the latest system software to reduce operational complexity associated with traditional OS management.
Overview
Flatcar Container Linux is a self-updating operating system designed for containers, making it ideal for running Kubernetes and other container platforms. It is suitable for anyone deploying containerized applications, particularly those seeking to do so securely or at scale.
Flatcar Container Linux offers several benefits over traditional Linux operating systems: Security, Reduced complexity, Automated updates.
Deploying a container-optimized OS like Flatcar is recommended by NIST in its application container security guide: "Whenever possible, organizations should use these minimalistic OSs to reduce their attack surfaces and mitigate the typical risks and hardening activities associated with general-purpose OSs."
Flatcar is free and open source, with a discussion forum for community users.
Highlights
- Deploying a container-optimized OS like Flatcar is recommended by NIST in its application container security guide
- Automatic updates deliver security and bug-fix patches without the need for patch management
- Reduce security exposure by using a minimal, immutable container OS
Details
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64-bit (Arm) Amazon Machine Image (AMI)
Latest version
Operating system
OtherLinux 4344.1.1
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Pricing
This product is available free of charge. Free subscriptions have no end date and may be canceled any time.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
Dimensions summary
This listing is free, so you pay no software charge for Flatcar Container Linux itself. The many dimensions are all ARM-based AWS EC2 instance types, billed by the hour. You choose the instance that fits your workload, from small sizes like t4g.nano up to larger and metal options like c6g.metal or r6g.16xlarge. Each family targets different needs, such as general purpose, compute, memory, storage, or GPU workloads. Sizes scale within each family from medium through 16xlarge. Your only cost comes from the AWS infrastructure hours for the instance you run.
Top-of-mind questions for buyers
You pay no software charge for Flatcar Container Linux. Your cost comes only from the underlying AWS infrastructure. That means the standard EC2 hourly rate for the ARM instance type you launch, plus any related AWS storage or data charges. The operating system itself adds nothing to your bill.
The software carries no charge, so the operating system never accrues fees. EC2 hourly charges apply only while an instance is running. A stopped instance stops accruing compute hours, though attached AWS storage may still incur infrastructure fees. You are billed for running time only.
Each dimension maps to one ARM-based EC2 instance type, billed per running hour. The family sets the workload focus, such as general purpose, compute, memory, storage, or GPU. The size, from medium up to 16xlarge or metal, sets the CPU, memory, and resources you get. Choose the family and size that fit your workload.
www.flatcar.org
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Delivery details
64-bit (Arm) Amazon Machine Image (AMI)
Amazon Machine Image (AMI)
An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.
Version release notes
Additional details
Usage instructions
You can spin up single instances of Flatcar Container Linux using the instructions here: https://www.flatcar.org/docs/latest/installing/cloud/aws-ec2/
Flatcar Container Linux supports a declarative provisioning using the Config format. Learn more from https://www.flatcar.org/docs/latest/provisioning/
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Flatcar Container Linux is a lightweight operating system optimized for running containers. Designed for use in modern distributed infrastructure, Flatcar is automatically updated with the latest system software to reduce operational complexity associated with traditional OS management.
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