CloudLinux: Difference between revisions
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(Created page with " === <big>CloudLinux OS – Overview</big> === <big>'''CloudLinux OS''' is a '''commercial Linux distribution''' (paid, subscription-based) designed specifically for '''web hosting providers, data centers, and enterprises''' that run shared hosting environments.</big> <big>It is based on '''RHEL (Red Hat Enterprise Linux)''' / '''CentOS''' but adds powerful features for '''security, stability, and performance isolation''' in multi-tenant servers.</big> === <big>Why Clo...") |
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Latest revision as of 06:04, 22 August 2025
CloudLinux OS – Overview
CloudLinux OS is a commercial Linux distribution (paid, subscription-based) designed specifically for web hosting providers, data centers, and enterprises that run shared hosting environments.
It is based on RHEL (Red Hat Enterprise Linux) / CentOS but adds powerful features for security, stability, and performance isolation in multi-tenant servers.
Why CloudLinux?
In shared hosting, multiple websites are hosted on the same server.
- If one website uses too many resources (CPU, RAM, I/O) → the entire server can slow down or crash.
- If one site gets hacked → other sites are at risk.
- CloudLinux solves this by isolating each tenant (user/account) into a lightweight, virtualized environment with its own resource limits.
Key Features of CloudLinux
- LVE (Lightweight Virtualized Environment)
- Isolates each user (like a mini VM inside the server).
- Sets resource limits: CPU, RAM, Disk I/O, Inodes, Entry Processes.
- Prevents one user from overloading the entire server.
- CageFS (Secure Virtualized File System)
- Each user sees only their own files and processes.
- Blocks users from viewing sensitive system files.
- Increases security in shared hosting.
- Imunify360 (Optional Add-On)
- Advanced malware protection, firewall, intrusion detection.
- Automated malware scanning and cleanup.
- PHP Selector & Ruby/Python Selector
- Users can choose their own PHP version (5.x → 8.x).
- Supports multiple versions of Python and Ruby.
- KernelCare (Optional Add-On)
- Live kernel patching without rebooting.
- Keeps servers secure with zero downtime.
- MySQL Governor
- Monitors and limits abusive MySQL queries.
- Prevents one account from hogging database resources.
- Resource Usage Monitoring
- Hosting providers can track usage and prevent abuse.
- Customers can see their own resource usage in cPanel/DirectAdmin.
Recent Stable Releases (CloudLinux OS 8 & 9 Series)
| Release | Date | Notes |
|---|---|---|
| CloudLinux OS 8.8 | May 25, 2023 | Introduced updates to Python 3.11, nginx 1.22, PostgreSQL 15 (blog.cloudlinux.com) |
| CloudLinux OS 8.9 | Nov 27, 2023 | Updated kernel to RHEL 8.9, Node.js 20 (blog.cloudlinux.com) |
| CloudLinux OS 8.10 | May 30, 2024 | Latest of the 8.x series (blog.cloudlinux.com) |
| CloudLinux OS 9.4 | May 7, 2024 | Continued improvements under 9.x (blog.cloudlinux.com) |
| CloudLinux OS 9.5 | Nov 19, 2024 | Latest 9.x release ahead of 9.6 (blog.cloudlinux.com) |
| CloudLinux OS 9.6 | May 21, 2025 | Current latest: includes updated module streams (PHP 8.3, MySQL 8.4, nginx 1.26) and enhancements to virtualization tools like podman, buildah, libvirt, QEMU-KVM (blog.cloudlinux.com, LinuxPunx) |