OnlineOrNot VS CloudLinux

• Ease of Use
  OnlineOrNot boasts a user-friendly interface that makes it simple for users to set up and monitor websites for uptime.
• Customization Options
  The service offers a range of configuration options, allowing users to tailor monitoring alerts and reports to their needs.
• Real-time Monitoring
  OnlineOrNot provides real-time monitoring capabilities, helping users to quickly identify and respond to downtime issues.
• Multiple Check Types
  The platform supports a variety of check types including HTTP, HTTPS, and keyword checks, ensuring comprehensive monitoring.
• Notification Integrations
  OnlineOrNot integrates with various notification systems like email, Slack, and other channels, ensuring that users are promptly informed of any issues.
• Affordable Pricing
  The service offers competitive and transparent pricing plans, making it accessible for both small businesses and larger enterprises.

Possible disadvantages

• Limited Advanced Features
  While adequate for most needs, OnlineOrNot may lack some advanced features that specialized monitoring services provide.
• Support Availability
  Customer support options may be limited, particularly for lower-tier plans, which could be a drawback for users requiring immediate assistance.
• Scalability Issues
  The platform might not be as scalable as some competitors, which could pose challenges for very large enterprises needing to monitor a vast number of sites.
• Learning Curve
  Despite its user-friendly interface, some users may still face a learning curve when first getting started with the platform.
• Dependency on Internet
  As an online service, OnlineOrNot itself depends on having a reliable internet connection, which could be a drawback if users have unstable internet access.

• 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.

Monitor a Website with OnlineOrNot

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• Ask HN: What are you working on? (September 2026)

  Still OnlineOrNot (https://onlineornot.com/), 5.5 years on. Most recently I shipped an MCP server (w/ OAuth sign-in) recently to expose the API a bit better to agents, a TypeScript SDK and rewrote the CLI to use it. Just before LLMs... - Source: Hacker News / about 2 months ago

• Ask HN: What are you working on? (April 2026) (Non AI)

  Still OnlineOrNot (https://onlineornot.com/) - I've been working on adding more and more configurability to the browser checks feature. More recently, I've made it so you can drop your existing playwright test suites into the code... - Source: Hacker News / 7 months ago

• Ask HN: What Are You Working On? (March 2026)

  I've been celebrating five years of working on OnlineOrNot (https://onlineornot.com/) by adding more features for teams that build software: - 2FA, PassKey, and password-based login for folks that hate magic links - Moved my entire API... - Source: Hacker News / 8 months ago

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Tracking CloudLinux since Mar 2021.