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AlmaLinux vs Nagios Core on CentOS comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
4.8
Switching to AlmaLinux saves costs, reduces risks, enhances communication, and eliminates vendor lock-in, ensuring enterprise compatibility.
Sentiment score
4.0
Nagios Core on CentOS enhances efficiency, reducing downtime by up to 40% and saving up to $50,000 annually.
The clearest measurable benefit is avoiding operating system subscription costs while maintaining enterprise Linux compatibility and stability.
Associate Systems Engineer at Dhanyaayai Enterprises Pvt Ltd
We saved approximately 70% of our budget with AlmaLinux, and the system is stable and reliable.
Systems Engineer at SARL Rajafood
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.
We definitely see a positive ROI using Nagios Core on CentOS, as while it does not have licensing costs, the real return came from reducing downtime, faster issue resolution, and improved operational efficiency.
Senior HPC Engineer at a energy/utilities company with 10,001+ employees
Nagios Core on CentOS lets me know about these issues, and I can recover the system or stop the disaster, saving both money and time.
System Software Support Engineer at a tech vendor with 11-50 employees
With proactive alerts, unplanned downtime dropped by around thirty to forty percent.
Team Lead, Service DevOps at a computer software company with 51-200 employees
 

Customer Service

Sentiment score
5.2
AlmaLinux offers reliable support with quick responses and robust documentation, praised by users and supported by active community resources.
Sentiment score
5.0
Nagios Core on CentOS offers community-driven support with forums, while enterprise subscribers get additional technical help.
AlmaLinux offers strong community support and excellent documentation.
Associate Systems Engineer at Dhanyaayai Enterprises Pvt Ltd
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.
Cloud Software Engineer at a tech vendor with 1,001-5,000 employees
The customer support for AlmaLinux is good.
Ingénieur Systéme at Groupe Open SA
Because of the documentation regarding installation, configuration, and troubleshooting, it helped a lot and avoids confusion.
Infrastructure Analyst at a tech vendor with 10,001+ employees
Enterprise support provides assistance for installation, upgrade guidance, and troubleshooting configuration help.
Infrastructure Specialist at IBM
For Nagios Core on CentOS, customer support is community-driven rather than vendor-driven.
Senior HPC Engineer at a energy/utilities company with 10,001+ employees
 

Scalability Issues

Sentiment score
4.6
AlmaLinux excels in scalability, supporting diverse infrastructures efficiently, praised for stable performance and high user satisfaction.
Sentiment score
4.8
Nagios Core on CentOS is stable and scalable for small to medium enterprises, with options for larger deployments.
It is very scalable and performs well both on small deployments and large-scale infrastructure with many servers.
Ingénieur Systéme at Groupe Open SA
AlmaLinux scales very well and can support everything from a small virtual machine to large enterprise deployments.
Associate Systems Engineer at Dhanyaayai Enterprises Pvt Ltd
AlmaLinux's scalability is very good because the predictable updates ensure there are no issues from that point of view.
Solution Architect at Dhanyaayai enterprise private limited
Scaling to large environments requires additional architecture and planning.
Senior HPC Engineer at a energy/utilities company with 10,001+ employees
Scalability is easy, making it simple to scale up as my organization grows and needs to monitor more servers or services.
Senior IT Engineer at a tech vendor with 10,001+ employees
Its scalability is overall good for medium and large enterprise environments, though it requires tuning at a very large scale.
Infrastructure Specialist at IBM
 

Stability Issues

Sentiment score
8.2
AlmaLinux offers stable, reliable performance with minimal failures, ideal for enterprise workloads with timely security updates and extended uptime.
Sentiment score
7.6
Nagios Core on CentOS is stable and reliable, but users desire improved UI and consider alternatives like Grafana.
Its security is another highlight, providing minimal disruptions, timely security patches, bug fixes, and a reduced attack surface.
system administration | DevOps | Softrware Developer at a tech vendor with 11-50 employees
AlmaLinux is a reliable and stable version of Linux.
Systems Engineer at SARL Rajafood
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.
Associate Systems Engineer at Dhanyaayai Enterprises Pvt Ltd
Nagios Core on CentOS is stable and reliable, especially for long-running monitoring environments.
Senior HPC Engineer at a energy/utilities company with 10,001+ employees
In my experience, Nagios Core on CentOS is very stable and continues to function well.
Team Lead, Service DevOps at a computer software company with 51-200 employees
Nagios Core on CentOS is improving its reliability and accuracy to get nice precision to the different services and correct monitoring.
Chief Information Officer at Cordero y Asociados S.L. - Cordero Informáticos
 

Room For Improvement

AlmaLinux needs improved host access control, documentation, hardware compatibility, support, memory management, software updates, and third-party repository integration.
Nagios Core on CentOS needs UI updates, better documentation, scalability enhancements, and improved integration for enterprise environments.
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.
DevOps at a energy/utilities company with 501-1,000 employees
If something is added to AlmaLinux that allows for some subscription or makes it exactly equal to RHEL, it would be perfect.
Devops Engineer at EDAG
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.
system administration | DevOps | Softrware Developer at a tech vendor with 11-50 employees
For large environments, scaling Nagios Core on CentOS requires additional architectural planning, and tuning alerts is critical; otherwise, teams start ignoring notifications.
Senior HPC Engineer at a energy/utilities company with 10,001+ employees
The learning curve for new users adopting Nagios Core on CentOS is challenging, primarily due to the limited documentation available on the internet regarding how to install and maintain it.
System Software Support Engineer at a tech vendor with 11-50 employees
Plugins for monitoring services of an F5 load balancer or different other hardware devices such as Imperva WAF would be very useful.
Cloud Dev Ops Engineer at a marketing services firm with 10,001+ employees
 

Setup Cost

AlmaLinux attracts enterprises with its free, open-source model and cost-effectiveness, enhancing budget management and resource allocation.
CentOS Nagios Core users value its open-source cost-effectiveness, ease of setup, and minimal managed indirect costs for monitoring.
In the open-source environment, I believe a Linux distribution is always free of cost.
Junior Software Test Automation Engineer at a consultancy with 51-200 employees
AlmaLinux is free, so there are no costs there.
I have no licensing cost, which means there is no burden related to licensing.
Solution Architect at Dhanyaayai enterprise private limited
The main factors that influenced my decision to choose Nagios Core on CentOS over other monitoring solutions are mainly its free of cost, open source nature, which saves a lot of money, and it being easy to install, so even junior staff can set it up straight away to start monitoring.
Infrastructure Analyst at a tech vendor with 10,001+ employees
Regarding pricing, setup cost, and licensing, I used the open-source version, so the setup cost is zero and no license is required.
Team Lead, Service DevOps at a computer software company with 51-200 employees
My experience with pricing, setup cost, and licensing is that it is good, with very cheap costs.
Senior Business Analyst at Netcore Cloud
 

Valuable Features

AlmaLinux delivers stability, RHEL compatibility, cost savings, and performance, making it ideal for organizations migrating from other Linux distributions.
Nagios Core on CentOS provides flexible, cost-effective monitoring through plugins, offering proactive issue detection and centralized visibility.
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.
system administration | DevOps | Softrware Developer at a tech vendor with 11-50 employees
Because AlmaLinux is binary compatible with Red Hat, it provides a very stable and reliable operating system suitable for production environments.
Ingénieur Systéme at Groupe Open SA
The prompt patching and OS updates with AlmaLinux have helped our team by improving our FedRAMP compliance and vulnerability scan reports.
Cloud Software Engineer at a tech vendor with 1,001-5,000 employees
The best features Nagios Core on CentOS offers are the capabilities to monitor both Windows and Linux services, as well as the ability to write custom plugins to monitor different services if the needed plugins are not provided by default.
Cloud Dev Ops Engineer at a marketing services firm with 10,001+ employees
The biggest strength of Nagios Core on CentOS is its plugin architecture, which is extremely flexible because plugins are scripts or binaries that return a standard output and exit code.
Senior HPC Engineer at a energy/utilities company with 10,001+ employees
Nagios Core on CentOS has positively impacted my organization by significantly reducing downtime through timely alerts configured according to my specifications.
Team Lead, Service DevOps at a computer software company with 51-200 employees
 

Categories and Ranking

AlmaLinux
Ranking in Operating Systems (OS) for Business
13th
Average Rating
8.4
Reviews Sentiment
5.2
Number of Reviews
19
Ranking in other categories
No ranking in other categories
Nagios Core on CentOS
Ranking in Operating Systems (OS) for Business
22nd
Average Rating
8.4
Reviews Sentiment
5.0
Number of Reviews
13
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2026, in the Operating Systems (OS) for Business category, the mindshare of AlmaLinux is 4.3%, up from 0.6% compared to the previous year. The mindshare of Nagios Core on CentOS is 0.2%, up from 0.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Mindshare Distribution
ProductMindshare (%)
AlmaLinux4.3%
Nagios Core on CentOS0.2%
Other95.5%
Operating Systems (OS) for Business
 

Featured Reviews

Naim Khan - PeerSpot reviewer
DevOps Engineer at SMC Labs, LLC
Private cloud practice has become seamless and deployments run smoothly for my projects
I follow the documentation for AlmaLinux, which I believe could be more extensive for enterprise setups. My primary use case remains deploying private cloud infrastructure using OpenStack Yoga, thus suggesting improvements to cater to specific cloud instances like AWS Graviton or Azure NVMe. Driver or kernel updates for new hardware or cloud instances like AWS Graviton or Azure NVMe tend to arrive a little later in AlmaLinux than they do in the Red Hat distribution. Therefore, I suggest that faster releases of cloud-optimized images and updated hardware drivers could enhance AlmaLinux's competitiveness. Additionally, I find it sometimes difficult to find answers on forums due to the community not being as large as that of Red Hat or CentOS. My suggestion is to create an active forum or Q&A session where developers can directly address user problems, growing the community and providing optional enterprise support tiers for large organizations. Additionally, I have continued to consider improvements. For server administration and language runtime management, I encountered conflicts on production servers with older and newer versions of tools such as Python and Node.js. Simplifying the application space management would reduce the friction in multi-language development environments. Moreover, including more pre-configured or auto-remediation scripts like CIS Benchmark or STIG compliance would be immensely helpful for enterprise security hardening.
reviewer2836233 - PeerSpot reviewer
Infrastructure Analyst at a tech vendor with 10,001+ employees
Monitoring has reduced outages and improves proactive issue resolution across our infrastructure
Regarding complexity, I think there is no feature like InfluxDB AI, so it may require more expertise to configure. There are also some migration challenges in adopting the new dashboards, so it takes some time to train the staff, but it is not a big concern. I think it is better to add some advanced features. I do not think there are so many things that need to be improved in Nagios Core on CentOS. If it is better to customize the dashboard or if we can get something like a modern view, it will be helpful for the dashboard. I felt very happy with Nagios Core on CentOS. Why I took off one point is that I think it is better suited for a small or medium setup. If large enterprises can use Nagios Core on CentOS, it will be helpful. It also requires manual editing of the config file, so it is a little bit time-consuming. The web interface is functional, but compared to some other latest AI monitoring platforms, it is a little bit lacking. I think the AI platform would score higher, but it is good. The reporting is just basic, so if we compare it with Grafana, it needs richer insights.
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Manufacturing Company
11%
Outsourcing Company
11%
Financial Services Firm
9%
Construction Company
38%
Comms Service Provider
9%
Financial Services Firm
9%
Computer Software Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business13
Midsize Enterprise5
Large Enterprise11
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise4
Large Enterprise9
 

Questions from the Community

What is your experience regarding pricing and costs for AlmaLinux?
In AlmaLinux, I do not have experience with pricing, setup cost, and licensing.
What needs improvement with AlmaLinux?
AlmaLinux could have more software options. For example, if I need some software from Windows or something similar, it is missing some tools. I would say you cannot assume AlmaLinux is so similar t...
What is your primary use case for AlmaLinux?
I use AlmaLinux to create simulations, Monte Carlo simulations using C++, and for that I need to use the terminal and put a lot of different jobs to process the code. AlmaLinux is a pretty fast sof...
What is your experience regarding pricing and costs for Nagios Core on CentOS?
My company is using the open-source version of Nagios Core on CentOS, so there were no pricing, installation, or licensing costs.
What needs improvement with Nagios Core on CentOS?
Nagios Core on CentOS needs to improve the templates to send messages to IT companies and also integrate with different systems or improve integrations with QNAP, Synology, Ubiquiti, and different ...
What is your primary use case for Nagios Core on CentOS?
My main use case for Nagios Core on CentOS is monitoring all the services of my customers, including CPU, RAM, different kinds of services, and certificates. With the trigger feature, I try to opti...
 

Also Known As

AlmaLinux OS 8 (x86_64), AlmaLinux OS 10 (x86_64)
No data available
 

Overview

Find out what your peers are saying about AlmaLinux vs. Nagios Core on CentOS and other solutions. Updated: June 2026.
902,988 professionals have used our research since 2012.