CloudLinux is a Linux-based operating system designed specifically for shared hosting environments, VPS, and web servers that host multiple users. It enhances stability, security, and resource management by isolating each customer into its own lightweight environment. This isolation prevents one account from impacting others, improves server uptime, and gives hosting providers more control over resource allocation and performance. CloudLinux is widely adopted by hosting companies that want to deliver predictable performance and strong security on multi-tenant platforms.
Key Features
Lightweight Virtualization (LVE): Limits CPU, memory, and other resources per user to prevent one user from affecting others.
CageFS: A virtualized file system that isolates each user and enhances security by restricting access to sensitive server files.
PHP Selector: Lets users choose from multiple PHP versions per domain, along with customizable PHP extensions and configurations.
Multiple Language Support: Includes support for Perl, Python, Ruby, and various PHP versions, giving flexibility for different application stacks.
SecureLinks & Hardened Kernel: Security enhancements that prevent symbolic link attacks and harden the OS against common threats.
MySQL Governor: Monitors and controls database usage to reduce slow query impact and overall database overload.
KernelCare Integration: Live, reboot-less kernel patching to keep systems secure without downtime.
These features help hosting providers maintain performance and security in crowded environments with many customers.
Pricing
Solo & Shared Hosting Licenses: Tiered per server based on the number of cPanel, DirectAdmin, or Plesk accounts.
VPS & Dedicated Licenses: Options for smaller or larger systems depending on instance size and usage.
Annual, Monthly, or Pay-As-You-Grow: Flexible billing cycles that align with provider needs.
Add-Ons and Bundles: Available integrations (like KernelCare) may be bundled or priced separately depending on reseller or provider deals.
CloudLinux’s licensing is designed around hosting environments; costs scale with the number of accounts and servers you manage.
Use Cases
Shared Hosting Providers: Maintain stability and fairness across multiple tenants on the same server.
Web Hosting Resellers: Deliver dependable performance and easily manage resources for clients.
Managed VPS Providers: Give customers flexibility with resource limits while protecting server integrity.
Developers Requiring Multiple PHP Versions: Use PHP Selector to support varying application requirements.
Security-Focused Deployments: CageFS and hardened kernel components reduce attack surfaces in multi-user setups.
Website: https://cloudlinux.com/