

Docker on CentOS and AlmaLinux are both robust solutions in the containerization space. Docker on CentOS has an advantage due to its extensive community support and familiarity, while AlmaLinux shines with its superior stability and security features, making it particularly desirable for enterprises.
Features: Docker on CentOS provides container isolation, image-based packaging, and portability, which streamline application deployment and reduce inconsistencies across environments. AlmaLinux offers enhanced security, long-term stability, and binary compatibility with Red Hat Enterprise Linux, which are crucial for long-term enterprise strategies.
Room for Improvement: Docker on CentOS may encounter security vulnerabilities due to its deprecated state and could benefit from improvements in documentation and support for newer technologies. AlmaLinux, while stable, could enhance memory efficiency, address performance gaps, and improve speed and response times under certain workloads.
Ease of Deployment and Customer Service: AlmaLinux offers a seamless deployment experience with a focus on security compliance and enterprise-level support, ensuring reliable updates. Docker on CentOS benefits from its wide adoption, offering extensive community-driven resources, making it easy for users to find help and learn best practices.
Pricing and ROI: Both Docker on CentOS and AlmaLinux are open-source with low initial setup costs. Docker on CentOS can present varied ROI due to potentially increased expenses for commercial support. AlmaLinux offers a higher perceived ROI through its emphasis on stability and enterprise-friendly features, potentially resulting in reduced long-term costs.
We were looking for an open source and free solution. AlmaLinux fits in our requirement.
We saved approximately 70% of our budget with AlmaLinux, and the system is stable and reliable.
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.
I could say it is maybe forty percent compared to before using Docker.
I have not seen a return on investment because the deprecation made it so there was none, and if anything, the ROI would have been negative since money and time were spent using something that did not progress.
After switching to Docker on CentOS from VMs, I have seen a return on investment, saving 40 to 50 percent of our money as well.
The customer support for AlmaLinux is good.
I have not had a reason to communicate with the technical support of AlmaLinux because everything has been smooth for me.
I have never contacted any sort of technical support regarding AlmaLinux because I do not need it.
We purchase the software and product from them, so when I have an issue with Red Hat or Docker on CentOS or Kubernetes, I create a ticket with the partner who works directly with the respective teams.
Most things can be easily found as resources online to help resolve those issues.
Docker has lots of documentation and community support.
It is very scalable and performs well both on small deployments and large-scale infrastructure with many servers.
We can scale in, scale out, horizontally, and vertically depending on the way we want.
AlmaLinux's scalability is very good because the predictable updates ensure there are no issues from that point of view.
if we need more resources, we can just spin up a new Docker image, so scalability is good.
If you have good hardware, you can scale Docker on CentOS as required.
Docker on CentOS is scalable; I can build virtual machines, EC2 instances, and scale from zero to however many I want.
Its security is another highlight, providing minimal disruptions, timely security patches, bug fixes, and a reduced attack surface.
AlmaLinux is a reliable and stable version of Linux.
I have not encountered such issues with AlmaLinux, making it very stable.
Docker on CentOS is not stable anymore because it is not actively being maintained.
Docker on CentOS is quite stable.
Docker on CentOS is stable, but as I mentioned, there are some improvements needed.
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.
If something is added to AlmaLinux that allows for some subscription or makes it exactly equal to RHEL, it would be perfect.
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.
To achieve a higher rating of 9 or 10, they might need more automation features.
The metrics of the containers in Docker on CentOS can also be improved, along with the monitoring part which needs enhancement.
The main issue comes from running out of space; that is when crashes happen.
In the open-source environment, I believe a Linux distribution is always free of cost.
AlmaLinux is free, so there are no costs there.
I have no licensing cost, which means there is no burden related to licensing.
there is no licensing cost required.
There is no licensing in Docker on CentOS.
My experience with pricing, setup cost, and licensing was all good; cost was never an issue.
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.
Because AlmaLinux is binary compatible with Red Hat, it provides a very stable and reliable operating system suitable for production environments.
The prompt patching and OS updates with AlmaLinux have helped our team by improving our FedRAMP compliance and vulnerability scan reports.
It also ensures a consistent environment where applications will work on every machine, not just the developer's machine, and offers resource efficiency, such as no full OS per application, allowing me to share my infrastructure with multiple containers and applications.
Docker on CentOS has positively impacted my organization by making testing easier. I do not have to install older versions of applications and then make my system or service study.
The benefits are significant as it is easy to operate and maintain, making it more flexible.
| Product | Mindshare (%) |
|---|---|
| AlmaLinux | 3.8% |
| Docker on CentOS | 0.3% |
| Other | 95.9% |


| Company Size | Count |
|---|---|
| Small Business | 11 |
| Midsize Enterprise | 5 |
| Large Enterprise | 7 |
| Company Size | Count |
|---|---|
| Small Business | 9 |
| Large Enterprise | 6 |
AlmaLinux is an open-source, enterprise-level Linux distribution designed to provide stability, high performance, and community-driven support. It offers compatibility with RHEL, making it a reliable option for businesses seeking robust OS alternatives.
Built by CloudLinux, AlmaLinux serves enterprises looking for a powerful Linux distribution. It boasts seamless transitions from CentOS, providing a familiar environment for IT teams. With its open-source nature, AlmaLinux empowers organizations by offering control over their workflows. It supports diverse workloads, making it suitable for handling anything from basic setups to complex architectures. AlmaLinux stands out due to its strong security features, which focus on protecting sensitive data and maintaining secure server environments.
What are AlmaLinux's most important features?AlmaLinux has been implemented across industries like finance, healthcare, and technology due to its reliability and adaptability. In finance, it ensures secure transactions and data integrity. Healthcare organizations rely on it for managing sensitive patient data. Tech companies use it for its stability and community-driven enhancements, making it a versatile choice for diverse applications.
Docker on CentOS enhances deployment with container isolation, image-based packaging, and environment portability. Users experience streamlined application deployment and rapid releases, benefiting scalability and market agility despite some challenges from its deprecated status.
Docker on CentOS supports building, packaging, and running containerized applications on Linux servers. DevOps teams employ it for managing container infrastructure and CI/CD pipelines. Key uses include web hosting, backend service management, and development of Node.js microservices, APIs, and NGINX services. It addresses deployment efficiency, although orchestration and lifecycle management require Kubernetes. Security improvements and stronger OS update integration are areas of interest.
What are the most important features of Docker on CentOS?Industries utilize Docker on CentOS for proof of concept development, machine learning, website hosting, and microfinance application development. It is pivotal in CI/CD processes, supporting robust container infrastructure for comprehensive DevOps and platform team tasks. Its application in diverse environments showcases the adaptability of containerized solutions.
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