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    AlmaLinux OS 10 (x86_64)

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    Deployed on AWS
    AWS Free Tier
    AlmaLinux OS is an open-source, community owned and governed, forever-free enterprise Linux distribution, focused on long-term stability, providing a robust production-grade platform. AlmaLinux OS is binary compatible with RHEL®.
    4.4

    Overview

    AlmaLinux OS is an open-source, community-driven Linux operating system that fills the gap left by the discontinuation of the CentOS Linux stable release. AlmaLinux OS is an Enterprise Linux distro, binary compatible with RHEL®, and guided and built by the community.

    As a standalone, completely free OS, AlmaLinux OS enjoys $1M in annual sponsorship from CloudLinux Inc. and support from more than 25 other sponsors. Ongoing development efforts are governed by the members of the community.

    The AlmaLinux OS Foundation is a 501(c)(6) non-profit created for the benefit of the AlmaLinux OS community.

    Highlights

    • AlmaLinux OS Amazon Machine Images include Cloud-init, AWS Systems Manager Agent (SSM Agent) and EC2 Instance Connect support. The default cloud user is set up to be "ec2-user". After the machine is running, you will be able to log in as this user and run privileged commands with sudo.
    • All AlmaLinux OS images are built with SELinux set to enforcing mode.

    Details

    Delivery method

    Delivery option
    64-bit (x86) Amazon Machine Image (AMI)

    Latest version

    Operating system
    OtherLinux 10.1

    Deployed on AWS
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    Pricing

    AlmaLinux OS 10 (x86_64)

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    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.
    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.

    Vendor refund policy

    No refund - Free and open source.

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    Usage information

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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

    AlmaLinux OS 10.1.20251124.0 x86_64 release.

    Additional details

    Usage instructions

    1. Launch an instance and select a key pair.
    2. Use SSH client software with the private key from your key pair to connect to the instance:
    • Username: ec2-user
    • Port: TCP/22 (default)

    Support

    Vendor support

    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.

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    Customer reviews

    Ratings and reviews

     Info
    4.4
    4 ratings
    5 star
    4 star
    3 star
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    1 star
    25%
    75%
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    1 AWS reviews
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    3 external reviews
    External reviews are from PeerSpot .
    reviewer2797920

    Hosting workloads have gained stronger security and virtualization while performance stays consistent

    Reviewed on Jan 19, 2026
    Review provided by PeerSpot

    What is our primary use case?

    I provide hosting and email services for customers using AlmaLinux . Most of our customers are using Plesk  for managing their domains, and some servers end up having 300 or 400 domains, while others have around 50. Overall, the setup is the same; all of them are using AlmaLinux  9 or AlmaLinux 8, and we are currently configuring and migrating all of our infrastructure towards the newer AlmaLinux technologies and operating systems.

    What is most valuable?

    In my experience, the best features that AlmaLinux offers are not really different when comparing it with CentOS  because we actually migrated from CentOS  to AlmaLinux. AlmaLinux seems a bit more stable, but if we're talking about speed and efficiency, I noticed some gaps. For example, some of the services or web services that we are using acted differently on CentOS compared to AlmaLinux 9 or AlmaLinux 8 in terms of response times and memory consumption. We had many issues with memory consumption, and when we actually migrated initially, we migrated from servers that were using around 8 gigabytes of RAM, but when migrated to AlmaLinux 8, they needed more memory instead. So the customer needed to actually buy more memory. Even though AlmaLinux provided more stability and security patches, this came with a cost in terms of memory usage, and that was not really expected.

    Positively, I can say that AlmaLinux has brought a sense of stability, and besides the security patches, we also noticed better virtualization for our use cases. Stability, security patches, and improved virtualization are the main positive aspects I have observed.

    What needs improvement?

    I would like to see better tools in terms of memory consumption with AlmaLinux. I would like to know what processes exactly are consuming how much memory and have better core dumps or system core dumps so I can access them and investigate them instead of feeding the server with more and more memory. Another thing I would like to see is still about memory consumption; I would like to see an optimized kernel for AlmaLinux. The AlmaLinux team can look into this and see what they can improve in terms of resource consumption and monitoring tools that can actually help the users of AlmaLinux pinpoint the exact processes or services that are causing that amount of resource consumption.

    Memory consumption when we migrated from CentOS to AlmaLinux was a really big hit for us, and we didn't expect it. After six months of migration, we ended up using more resources for the same websites, and that's not acceptable.

    For how long have I used the solution?

    I have been working in my current field for about five years.

    What do I think about the stability of the solution?

    AlmaLinux is stable.

    How are customer service and support?

    AlmaLinux customer support is really nice; they provided us with quite some solutions for the problems we encountered.

    How would you rate customer service and support?

    Negative

    Which solution did I use previously and why did I switch?

    We used CentOS before AlmaLinux.

    What about the implementation team?

    We are the provider; we provide AlmaLinux servers and infrastructure to our customers.

    What other advice do I have?

    My advice for others looking into using AlmaLinux is to just try it out and see if it suits your needs, and if it does, that's great. I would rate this review an 8 out of 10.

    Which deployment model are you using for this solution?

    Public Cloud

    If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?

    Amazon Web Services (AWS)
    reviewer2797887

    Reliable long-term hosting has reduced server migrations and lets me focus on projects

    Reviewed on Jan 19, 2026
    Review provided by PeerSpot

    What is our primary use case?

    My main use case for AlmaLinux  involves using it for web servers, mail servers, and local development servers, and also for Docker . My web servers use AlmaLinux  to serve websites to inform my customers using Apache, MySQL , or PostgreSQL , and Docker  is being run on different application servers, hosting a myriad of applications.

    What is most valuable?

    The best features AlmaLinux offers include long-term support, which was the main reason I switched from Ubuntu  to CentOS . I was shocked when they killed support for CentOS  8 within a year, even though they had promised about nine years. I am very glad AlmaLinux stepped up and still provides that level of support.

    The long-term support provided by AlmaLinux helps my business by ensuring that we do not have to renew our servers every four to five years. Migrations can be quite labor-intensive, so being able to have a server run for as many years as that is excellent, giving us enough time to spin up new servers to slowly migrate information. In the meantime, Ubuntu  has started supporting or giving longer support terms as well, thanks to Ubuntu Pro or ESM, but that was a little bit too late. So mainly, we do not have to migrate servers every four or five years, allowing us to focus on projects other than simply spinning up new servers and migrating data.

    I would like to add that the ability to use the DNF package manager and different modules, such as various versions of PostgreSQL  and external repositories like Remi for different PHP versions, is a great feature. I found that to be much easier to support several versions than I was able to on Ubuntu.

    What needs improvement?

    One area for improvement with AlmaLinux is the use of SELinux to secure and harden my server, which I find to be a complicated beast. Better documentation on that part could be useful, although there is a lot of material out there.

    I choose a nine because nothing is ever perfect. For example, coming from Ubuntu, I found their firewall software easy to use, while with AlmaLinux's entire ecosystem, I always have to look up how to use firewall-cmd. These are just little preferences. I cannot think of anything else AlmaLinux could improve; it serves me well, and I have not been missing anything.

    For how long have I used the solution?

    I have been using AlmaLinux since about the time Red Hat, or IBM I think, killed off support for CentOS 8, so shortly after that. I am not sure which year that was.

    What do I think about the stability of the solution?

    After switching to AlmaLinux, I experienced that with Ubuntu, services would not reboot, restart, or start automatically when rebooting a server with the same installs and configurations, but I have not encountered such issues with AlmaLinux, making it very stable.

    What do I think about the scalability of the solution?

    I have no issues with the scalability of AlmaLinux.

    How are customer service and support?

    I have not needed customer support for AlmaLinux.

    How would you rate customer service and support?

    Which solution did I use previously and why did I switch?

    I previously used Ubuntu before moving to CentOS for its long-term support, and then I switched to AlmaLinux because CentOS was killed off.

    What was our ROI?

    I have not seen a return on investment in terms of needing fewer employees since I am a single-person business, but moving over to AlmaLinux saves a lot of time because of the long-term support, meaning I do not have to support the latest version every couple of years.

    What's my experience with pricing, setup cost, and licensing?

    AlmaLinux is free, so there are no costs there. The open source licensing helps a lot, and the setup cost is just my own time invested in learning the platform.

    Which other solutions did I evaluate?

    Before choosing AlmaLinux, I evaluated Rocky Linux , but it seemed to have the same organizational issues that CentOS faced. I found AlmaLinux to be a safe bet for the long run as it is supported by a foundation without commercial interests. I also contemplated moving back to Ubuntu, but that would have required rewriting all of our configuration scripts, which I did not have time for after just doing that for CentOS.

    What other advice do I have?

    My advice for others looking into using AlmaLinux is to probably try looking up or learning about this flavor of Linux, their package managers, and SELinux. At the end of the day, it is mostly the same with a different coat. I have no additional thoughts about AlmaLinux; it is a great overall operating system for servers. I gave this review a rating of 9.

    Olvanot Olvanot

    Reliable platform has supported critical infrastructure and secured long-term operations

    Reviewed on Jan 19, 2026
    Review provided by PeerSpot

    What is our primary use case?

    My main use case for AlmaLinux  is to use it for our servers, maintaining it as the backbone of our infrastructure, such as the data centers for our system, our web server, our application server, and everything else we do, making it the backbone of our system and infrastructure architecture. We use AlmaLinux  for our business case.

    What is most valuable?

    The best features AlmaLinux offers focus on enterprise service, such as a server engine for our database, as well as compatibility with other external environments, being useful for Red Hat and CentOS , and very ideal for our company, where we also have DevOps, making it the backbone of infrastructure for the CI/CD pipeline and Docker  deployment and everything else, plus security, as we use it for firewalls, intrusion detection systems, and monitoring services such as Prometheus and Grafana . We specifically use AlmaLinux because of its stability, its binary compatibility with RHEL , and the additional promotions for everything else.

    The most valuable feature I find in AlmaLinux is the binary compatibility with RHEL  and the long-term stability, which makes it a predictable, rock-solid system behavior, while also having small and safe packaging for subsystems or systems that run twenty-four hours a day, seven days a week. It is also very useful for long-term projects as a company's software for release, with a huge ecosystem, which is why I appreciate it so much, along with the security, as it offers a stable kernel API with timely security patches. The tooling stability for DevOps is also significant, allowing easy use of infrastructure as code with Ansible  or scripting playbooks that remain valid for years, making it especially important for the CI/CD pipelines.

    AlmaLinux has positively impacted my organization by being the backbone of our system, which is vital for our revenue as the backbone of our data center.

    What needs improvement?

    I am not certain how AlmaLinux can be improved since we simply use it and do not face any security issues.

    If AlmaLinux could provide ten to twenty years of fixes, that would be an improvement because I do not want to update the system all the time, as it becomes more challenging for me as a system administrator to track all the patches and everything I should patch on the system. If it could remain very stable, I would appreciate that consistently.

    For how long have I used the solution?

    I have been using AlmaLinux for about five years, from two thousand eighteen until now.

    What do I think about the stability of the solution?

    The positive outcomes I have seen with AlmaLinux include very few system failures, where updates do not randomly break our servers due to the configuration and binary compatibility. Systems can run for months or years without rebooting, which is ideal for production, laboratories, and research, as I use it heavily in my research on decarbonization and carbon footprint in the company, making it very ideal for production and laboratory research, as we look for safe operating system migration and better automation possibilities with tools such as Ansible  and Terraform  for configuration, which behaves consistently.

    Its security is another highlight, providing minimal disruptions, timely security patches, bug fixes, and a reduced attack surface.

    What other advice do I have?

    My advice for others looking into using AlmaLinux is to prioritize its stability, reliability, predictable behavior, long-term support, and brand compatibility, along with careful planning, automation, documentation, and understanding that security Linux should not be disabled, as SELinux restricts what a user can do, keeping the major security advantages intact. I would rate this product nine out of ten.

    Alex Kvasnytskyy

    Offers a reliable operating system with predictable updates for versatile Linux server deployment

    Reviewed on Apr 24, 2025
    Review from a verified AWS customer

    What is our primary use case?

    I use AlmaLinux  as the base operating system for all of our Linux servers. Our environment includes use cases that range from a load balancer on the NGINX  platform to our monitoring software, Check Point, on AlmaLinux . We also run Microsoft SQL Server  on AlmaLinux.

    What is most valuable?

    The most valuable features of AlmaLinux are its long-term support, which is a significant advantage as CentOS  lacks it. AlmaLinux has a predictable update cycle unlike Fedora and the frequent updates of CentOS  from Red Hat. Additionally, AlmaLinux offers excellent stability.

    What needs improvement?

    It is hard to say what needs improvement because I am on the operations side and focus on installing servers and running our software.

    For how long have I used the solution?

    I have had experience with AlmaLinux for about five years.

    What do I think about the stability of the solution?

    The stability is excellent. So far, I have not experienced any issues with AlmaLinux, apart from problems related to our own software, which is a separate story.

    What do I think about the scalability of the solution?

    On a scale of one to ten, I would rate the scalability as nine.

    How are customer service and support?

    I have not used AlmaLinux support at all. I rely on the extensive documentation available online and various forums. Additionally, my team has several individuals who are very familiar with AlmaLinux, and we have been managing well on our own.

    How would you rate customer service and support?

    Positive

    Which solution did I use previously and why did I switch?

    I previously used CentOS but switched to AlmaLinux when CentOS started having issues.

    How was the initial setup?

    The initial setup is pretty much straightforward. I use automation tools such as Ansible  for the installation process, making deployment efficient regardless of whether it's AWS  or on-site.

    What about the implementation team?

    I use Ansible  to install any servers in my environment.

    What's my experience with pricing, setup cost, and licensing?

    AlmaLinux is free of charge, which is why I chose this distribution. It offers an alternative to Red Hat, which is free only without support and updates. AlmaLinux provides free updates and security, unlike Red Hat, where support must be purchased separately.

    Which other solutions did I evaluate?

    I previously used CentOS before switching to AlmaLinux.

    What other advice do I have?

    Overall, I would rate AlmaLinux a ten. I would recommend AlmaLinux because it is a stable, simple operating system with a straightforward installation process that I have found reliable so far without any glitches. I rate the overall solution ten out of ten.

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