

Docker on CentOS and AlmaLinux both compete in the category of server operating systems with containerization and enterprise support as a focus. AlmaLinux seems to have the upper hand in terms of long-term support and security updates, which are critical for enterprise environments, while Docker on CentOS excels with its containerization features, despite its depreciation.
Features: Docker on CentOS offers robust features like container isolation, image-based packaging, and efficient resource utilization. It enhances portability across environments, which aids in faster deployment and workflow streamlining. AlmaLinux provides long-term support, binary compatibility with RHEL, and regular updates that ensure enterprise-grade stability and security.
Room for Improvement: Docker on CentOS could benefit from enhanced orchestration, better documentation, and improved handling of security vulnerabilities. There are also challenges with disk space utilization and the need for stronger community support. AlmaLinux is praised for its stability but could expand documentation, especially for cloud deployments, and increase community engagement to better compete with larger ecosystems.
Ease of Deployment and Customer Service: Both Docker on CentOS and AlmaLinux are noted for their ease of deployment both on-premises and in cloud environments. Docker on CentOS benefits from strong community support, reducing the need for extensive customer service, while AlmaLinux offers easy integration with enterprise tools, though there is room for improvement in real-time support and documentation.
Pricing and ROI: Docker on CentOS and AlmaLinux both provide significant cost advantages as they are open-source. Docker on CentOS is free, lowering infrastructure costs and requiring smaller teams, saving time and money. AlmaLinux similarly offers a cost-effective alternative to RHEL with no licensing fees, allowing organizations to save on both licensing and infrastructure expenses.
The clearest measurable benefit is avoiding operating system subscription costs while maintaining enterprise Linux compatibility and stability.
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.
Previously, it took us about a week to deploy, but now we can deploy our entire app in one or two days.
We saw improvements such as less troubleshooting time, faster onboarding, more stable automation, better parallel execution, and cleaner CI/CD execution logs.
I could say it is maybe forty percent compared to before using Docker.
AlmaLinux offers strong community support and excellent documentation.
The best features AlmaLinux offers include its support, which is outstanding from TuxCare, as we are getting the fixes and patch sets for the OS very fast.
The customer support for AlmaLinux is good.
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.
The customer support for Docker on CentOS is excellent, as there are very good community forums.
It is very scalable and performs well both on small deployments and large-scale infrastructure with many servers.
AlmaLinux scales very well and can support everything from a small virtual machine to large enterprise deployments.
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.
When we talk about scalability, it is not infinite, but for the types of projects we do, I think it is quite scalable.
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.
It is designed for enterprise workloads and follows a long-term support model, making it suitable for production servers, databases, web applications, virtualization platforms, and cloud environments.
Docker on CentOS is not stable anymore because it is not actively being maintained.
I experienced no conflicts during updates, maintaining the 140 TPS targets effectively.
Docker on CentOS is quite stable.
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.
Needed improvements for Docker on CentOS include better POC, searching techniques, and leveraging AI because AI can provide insights into standard practices, compliance, user specifications, security, logging, monitoring, and isolation.
Docker on CentOS could benefit from images that we can create or have, for example, just a module based on Portainer or some UI interface to create the containers automatically or create some internal APIs to make it easier to configure this by Terraform.
A guided diagnostic tool for CentOS would be very useful, checking repositories, kernel compatibility, firewall rules, the overlay, Docker daemon status, and container resource usage.
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 cost associated with either Docker or Docker on CentOS. It is completely zero cost.
Track who needs paid subscriptions, and include cloud compute, storage, networking, image registry, and monitoring costs.
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.
Docker's lightweight architecture on CentOS significantly affects my resource utilization in a beneficial way.
| Product | Mindshare (%) |
|---|---|
| AlmaLinux | 4.3% |
| Docker on CentOS | 0.4% |
| Other | 95.3% |

| Company Size | Count |
|---|---|
| Small Business | 13 |
| Midsize Enterprise | 5 |
| Large Enterprise | 11 |
| Company Size | Count |
|---|---|
| Small Business | 22 |
| Midsize Enterprise | 6 |
| Large Enterprise | 18 |
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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