Software Alternatives & Startups

Nagios Core VS CloudLinux

Compare Nagios Core VS CloudLinux and see what are their differences

Nagios Core

Nagios Core is a fastest-growing IT Infrastructure monitoring and alerting solution that is created for all sizes of businesses.

Rating
0 reviews
CloudLinux

Making Linux secure, stable, and profitable for thousands of hosting providers and data centers worldwide.

Rating
0 reviews
Pricing
Open source
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Base details

Website, pricing, platforms and company facts side by side.

Nagios Core
CloudLinux
Website nagios.org cloudlinux.com
Pricing —
Open source
Listed in

Features and specs

What each product offers, as listed by its team.

Nagios Core 5 features
CloudLinux 5 features
  • Open Source
    Nagios Core is free to use and modify, allowing organizations to customize it according to their needs without licensing costs or fees.
  • Extensibility
    Nagios Core supports a wide range of plugins and add-ons which enable users to extend its functionality to meet specific monitoring needs.
  • Active Community
    Being around for a long time, Nagios Core boasts a large and active community that contributes to a vast repository of plugins and provides support through forums and documentation.
  • Stable and Reliable
    Nagios Core is a mature tool that has been used in production environments for many years, known for its stability and reliability in monitoring critical infrastructure.
  • Scalable
    It can be scaled up with the help of Nagios Remote Plugin Executor (NRPE) and other techniques to monitor a large number of hosts and services.

Possible disadvantages

  • Steep Learning Curve
    Nagios Core may be challenging for new users due to its configuration complexity and the need for understanding various settings and files.
  • Manual Configuration
    Setup and configuration can be labor-intensive as it requires manual editing of text files, which can be cumbersome for large environments.
  • Limited GUI
    The user interface of Nagios Core is quite basic and may not be as user-friendly or visually appealing as some other monitoring solutions.
  • Scalability Concerns
    While Nagios Core can scale, managing a large number of hosts may require significant resources and additional backend tools, such as mod_gearman, to handle the load efficiently.
  • Feature Limitations
    Compared to commercial solutions or more modern open-source alternatives, Nagios Core may lack advanced features such as predictive analytics or built-in automation.
  • Enhanced Server Stability
    CloudLinux uses its lightweight virtualization technology (LVE) to isolate each tenant on a shared hosting server, preventing any single user from consuming excessive resources and crashing the server for everyone else. This ensures consistent uptime and performance.
  • Improved Security with HardenedPHP and KernelCare
    CloudLinux offers HardenedPHP, which patches old and unsupported PHP versions against known vulnerabilities, and KernelCare, which provides live kernel patching without requiring server reboots. These features significantly enhance server security posture.
  • Resource Limit Management
    Administrators can set granular resource limits (CPU, memory, I/O, number of processes, etc.) per user account using LVE Manager. This makes it easy to manage shared hosting environments and ensure fair resource distribution among tenants.
  • CageFS File System Virtualization
    CageFS creates a virtualized file system for each user, preventing them from seeing other users on the server, viewing sensitive configuration files, or exploiting server vulnerabilities. This adds an important layer of isolation and security.
  • Wide Compatibility with Hosting Panels
    CloudLinux integrates seamlessly with popular hosting control panels such as cPanel, Plesk, and DirectAdmin, making it straightforward for hosting providers to adopt without overhauling their existing infrastructure or workflows.

Possible disadvantages

  • Additional Licensing Cost
    CloudLinux requires a paid monthly or annual license on top of the base server cost. For smaller hosting providers or individual server owners, this additional expense can add up and may not always be justifiable compared to free alternatives.
  • Limited to CentOS/RHEL-Based Systems
    CloudLinux is built on top of RHEL/CentOS and does not support other Linux distributions like Ubuntu or Debian. This limits its adoption for hosting providers who prefer or already run non-RHEL-based environments.
  • Learning Curve for Configuration
    While CloudLinux provides powerful resource management tools, properly configuring LVE limits, CageFS, PHP Selector, and other features requires a solid understanding of the platform. Misconfiguration can lead to users being unnecessarily restricted or resources being poorly allocated.
  • Potential Performance Overhead
    The additional layers of virtualization, resource monitoring, and file system isolation introduced by CloudLinux can impose a slight performance overhead on the server compared to running a bare, unmodified Linux distribution without these controls.
  • Dependency on CloudLinux Ecosystem
    Adopting CloudLinux means relying on their ecosystem for kernel updates, PHP patches, and security fixes. If the company experiences delays in releasing patches or changes its pricing/licensing model, hosting providers may find themselves locked into a dependency that is difficult to migrate away from.

Analysis

An editorial look at what each product does well and who it suits.

Nagios Core
CloudLinux

No analysis of Nagios Core yet.

Overall verdict

  • CloudLinux is a well-regarded, mature Linux OS distribution and toolset specifically designed for shared hosting and multi-tenant server environments, offering strong isolation, resource management, and security features that make it a solid choice for hosting providers.

Why this product is good

  • Provides LVE (Lightweight Virtual Environment) technology for per-tenant resource isolation, preventing 'bad neighbor' effects on shared servers
  • Enhances server stability and security by isolating users so that one account's issues (crashes, resource spikes) don't affect others
  • Offers extended lifecycle support (longer than standard CentOS/RHEL support windows), which is valuable for legacy systems
  • Includes tools like CloudLinux OS Shield, Imunify360 integration, and hardened kernel options for improved security
  • Compatible with popular control panels like cPanel and Plesk, making it easy to integrate into existing hosting stacks
  • Backed by an established company with a long track record in the hosting industry and responsive support
  • Offers granular control over CPU, memory, I/O, and other resources per user account
  • Provides PHP Selector and multiple PHP version support, useful for hosting providers serving diverse client needs

Recommended for

  • Web hosting companies running shared or reseller hosting environments
  • Hosting providers needing to isolate customer accounts on the same physical server
  • Businesses requiring extended OS support lifecycles beyond standard RHEL/CentOS EOL dates
  • Enterprises using cPanel or Plesk that want tighter security and resource control
  • Hosting companies looking to reduce support tickets caused by noisy-neighbor resource contention
  • IT teams managing multi-tenant infrastructure who need governance and monitoring tools built into the OS layer

Videos

Walkthroughs and reviews on video.

Nagios Core 1 video + Add
CloudLinux 3 videos + Add

HomeLab #2 - Monitoring my Homelab with Nagios Core

When To Use Cloudlinux On Your Virtual Private Server (VPS)

More videos

  • - CloudLinux OS+ in a minute: Explore Features
  • - How CloudLinux Plans to Keep CentOS 6 Alive

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Nagios Core
CloudLinux
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Nagios Core no reviews yet
CloudLinux no reviews yet

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Alternatives to Nagios Core and CloudLinux

When comparing Nagios Core and CloudLinux, you can also consider the following products.