Sold by: Hanwei Software Technology
Deployed on AWS
AWS Free Tier
This is a repackaged open source software product wherein additional charges apply for security hardening, optimization, and EC2 baseline validation provided by Hanwei. SELinux is enforcing, SSH is hardened and key-only, auditd is active, and kernel and resource limits are tuned for EC2.
Overview
Charges for this image cover the security hardening, optimization, and pre-integration work Hanwei performs on top of the upstream CentOS Stream project. No application software is added. This image provides a minimal, EC2-ready CentOS Stream 9 base that is patched to the build date and configured to a consistent hardening and tuning profile, so instances launch ready for use without a further baseline pass.
What Hanwei Adds to Upstream CentOS Stream 9
- Hardening beyond distribution defaults: SSH is restricted to a modern key-exchange, cipher and MAC allow-list, root login and password authentication are disabled, MaxAuthTries is lowered, auditd ships with an expanded rule set, and kernel network parameters are set for a hardened posture.
- A uniform tuning baseline: The soft open-file limit is raised from 1024 to 65536 (hard limit 524288), vm.max_map_count is raised from 65530 to 262144, the device receive backlog and TCP SYN backlog are enlarged, socket buffer ceilings are increased, tcp_slow_start_after_idle is disabled, and journald is capped at 500 MB. The profile raises ceilings only and does not alter protocol semantics or application behaviour.
- AWS operational integration: The Amazon SSM Agent is installed and enabled, and chrony is pointed at the Amazon Time Sync service at 169.254.169.123.
- Build dependencies preinstalled: gcc, make, pkgconf and openssl-devel are present, so software can be compiled on the instance without adding a toolchain.
- Pinned patch level and reproducible build: Packages are updated to the build date and the image is produced by a reproducible build that is validated on EC2 before release.
Access and Security Posture
- SELinux is in enforcing mode.
- The default login is the ec2-user account over SSH using key-based authentication.
- Direct root login over SSH is disabled and password authentication is turned off.
- No application credentials or SSH keys are baked into the image; host keys are generated on first boot.
Operational Impact on EC2
- The root filesystem grows to the size of the root EBS volume on first boot.
- The Amazon SSM Agent allows shell access through Session Manager without opening inbound SSH.
- Time is synchronized through the Amazon Time Sync service reached at the link-local address.
- cloud-init handles first-boot initialization: hostname, user data, and the login SSH key.
- The patch level is fixed at build time, so launches from this version are reproducible.
Where This Image Fits
- A general-purpose CentOS Stream 9 base for services, application hosts and build agents.
- Container and CI hosts, with gcc, make, pkgconf and openssl-devel already present.
- Fleets managed through cloud-init and AWS Systems Manager.
- Workloads that want a lean, hardened base without a preinstalled application stack.
About CentOS Stream 9
CentOS Stream 9 is the continuously delivered distribution that tracks the next Red Hat Enterprise Linux 9 minor release, providing a current, RHEL-compatible userland and kernel.
Highlights
- WHAT IS PACKAGED - A minimal CentOS Stream 9 image for x86-64, patched to the build date, with gcc, make, pkgconf and openssl-devel preinstalled so no build toolchain has to be added.
- HOW THE BASELINE IS HARDENED AND TUNED - SSH uses a modern algorithm allow-list with key-only login and root login disabled, auditd is active and SELinux is enforcing; the soft open-file limit goes from 1024 to 65536, vm.max_map_count is raised from 65530 to 262144, and socket backlogs and buffers are enlarged without changing protocol behaviour.
- HOW IT FITS AWS OPERATIONS - The Amazon SSM Agent enables Session Manager access, chrony uses the Amazon Time Sync service, cloud-init handles first-boot setup, and the root filesystem expands to the EBS volume on first boot.
Details
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Delivery method
Delivery option
64-bit (x86) Amazon Machine Image (AMI)
Latest version
Operating system
CentOs CentOS Stream 9
Deployed on AWS
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Pricing
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time. Alternatively, you can pay upfront for a contract, which typically covers your anticipated usage for the contract duration. Any usage beyond contract will incur additional usage-based costs.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
If you are an AWS Free Tier customer with a free plan, you are eligible to subscribe to this offer. You can use free credits to cover the cost of eligible AWS infrastructure. See AWS Free Tier for more details. If you created an AWS account before July 15th, 2025, and qualify for the Legacy AWS Free Tier, Amazon EC2 charges for Micro instances are free for up to 750 hours per month. See Legacy AWS Free Tier for more details.
Dimension | Cost/hour |
|---|---|
t3.small Recommended | $0.03 |
t3.micro | $0.03 |
t2.micro | $0.03 |
c6i.4xlarge | $0.09 |
i3en.12xlarge | $0.10 |
u7in-24tb.224xlarge | $0.50 |
m7a.16xlarge | $0.10 |
m1.medium | $0.05 |
m5dn.xlarge | $0.07 |
m5n.metal | $0.10 |
Dimensions summary
You pay by the hour for this hardened operating system image, billed per running EC2 instance. There are no tiers or feature levels. Each line in the pricing table matches one EC2 instance type, and the hourly software rate changes with the instance you choose. Smaller general-purpose instances carry lower hourly rates, while compute-, memory-, storage-, and accelerator-optimized instances carry higher rates that track their size and capacity. You select the instance that fits your workload, and your software cost scales with that choice plus standard AWS infrastructure charges.
Top-of-mind questions for buyers
Each line bills the hardened CentOS Stream 9 Minimal image running on one matching EC2 instance. The rate covers the software license for that running instance. The operating system is self-contained and bundles the libraries and runtimes needed to run. You still pay standard AWS charges for the underlying instance.
The hourly software rate meters running time only. A stopped or paused instance does not accrue the software charge. Note that stopped instances may still incur standard AWS storage fees for attached volumes. The software cost resumes when you start the instance again.
Each instance type maps to a different hourly software rate. Smaller general-purpose types like t3 or m5 carry lower rates. Compute-, memory-, storage-, and accelerator-optimized types carry higher rates that track their size and capacity. Your choice of instance sets the software cost; no tiers or feature levels apply.
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Delivery details
64-bit (x86) 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
- Rebuilt on the latest CentOS Stream 9 and fully patched at build time.
- Hanwei security hardening and EC2 resource/network tuning baseline applied.
- Amazon SSM Agent and Amazon Time Sync integrated.
- Default login user is ec2-user; direct root login and password authentication are disabled.
- Root filesystem is XFS.
- Single-boot layout (the earlier dual-boot image is replaced by a single CentOS Stream 9 system).
Additional details
Usage instructions
SSH to the instance and login as 'ec2-user' using the key specified at launch. Additional information may be found at : https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AccessingInstancesLinux.html
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We provide technical support through our work order system. Before creating a support case, we recommend that you browse our knowledge base (https://support.proimage.cloud/ ). If you need manual help, please visit: https://support.proimage.cloud/support , or contact prosupport@hanweie.com .
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
Similar products
This product has charges associated with it for the AWS infrastructure used to run this free AMI; no Hanwei software fee applies. Hanwei prepares a minimal CentOS Stream 9 image with essential utilities, a versioned security-hardening baseline, automatic-update configuration, credential-free construction, and EC2 validation.
This is a repackaged open source software product wherein additional charges apply for security hardening, optimization, and EC2 baseline validation provided by Hanwei. SELinux is enforcing, SSH is hardened and key-only, auditd is active, and kernel and resource limits are tuned for EC2. The Linux 6.1 LTS kernel is built from kernel.org sources.
This product has charges associated with it for Hanwei's preparation of a CentOS Stream 9 ARM64 minimal AMI with a verified 64KB-page kernel, documented Non-LVM GPT layout, versioned security hardening, credential-free construction, and bounded EC2 validation. Applicable charges follow final Seller Portal terms.
This is a repackaged open source software product wherein additional charges apply for baseline security hardening, kernel performance tuning, weekly automated patch integrations, versatile storage support (Standard & LVM), and pre-integrated AWS cloud utilities.
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