CloudLinux is the company that makes CloudLinux OS. It is a Linux operating system for shared web hosting servers. CloudLinux OS sets resource limits for each hosting account. One account cannot use all of the central processing unit (CPU) or memory of a Server. Its tools work with cPanel and shared hosting providers.
History of CloudLinux
Creator: Igor Seletskiy (founder and CEO, per the About page).
CloudLinux was built for web hosting firms. The About page says that Cloud Linux, Inc. merged into Cloud Linux Software, Inc. The firm does business under the TUXCARE trade name. The same page lists 2318 Louis Rd, Palo Alto, California as the headquarters. It also lists a mailing address in St. Petersburg, Florida.
The About page names Igor Seletskiy as founder and CEO. The team has more than 500 combined years of Linux work. It has more than 250 employees around the world. It has more than 500,000 installs and 4,000 customers. It names Liquid Web, 1&1 and Dell as customers.
The firm sells CloudLinux OS as the base system for hosting servers. It also sells Imunify360 for server security. It sells KernelCare for live kernel patches. Those patches apply without a reboot. It sells AccelerateWP for WordPress speed. The home page lists a bundle of CloudLinux and Imunify360 for virtual private server (VPS) providers.
The English Wikipedia has no page for CloudLinux. The search for the title returned a page that says the page does not exist. The About page does not state a founding year. So this entry gives no year. Each later date comes from a CloudLinux page that shows it.
Changelog and latest update
CloudLinux OS has numbered releases. There is one for each supported Linux version. The docs have setup pages for CloudLinux OS 8. They also have pages for CloudLinux OS 10 Subsystem Mode. The components page lists the packages and repositories. It lists version support for each release line.
The CloudLinux blog keeps dated release notes. A note dated 22 September 2026 covers the bridge-stp-uaf local root flaw. It is tracked as CVE-2026-72389. The note gives the kernel update and the mitigation. A note dated 3 September 2026 covers SCTPhantom. It is tracked as CVE-2026-64564. A note dated 10 September 2026 covers package signing. From 1 December 2026, CloudLinux signs all new packages for CloudLinux 7, 8 and 9.
Endless Lifecycle Support is listed on the CloudLinux home page. It offers security patches for software past end of life. Imunify360 and KernelCare are sold as separate products. They sit next to CloudLinux OS.
Latest update: Release note, 8 October 2026, 2026-10-08
The CloudLinux blog lists a release note dated 8 October 2026. It covers three Linux kernel flaws. They are in the CISA Known Exploited Vulnerabilities catalog. They are CVE-2025-39964, CVE-2026-53266 and CVE-2025-39682. The note gives the status. It also gives the fixes for CloudLinux systems. It is the newest entry on the blog release notes list.
Usage examples
The commands come from the CloudLinux docs. They run as root. The server needs CloudLinux OS installed. The yum command installs the lve-utils package. It provides the lvectl command. The cagefsctl command manages CageFS. CageFS is the isolated file system for each account. The cldetect command reports the control panel the server runs.
# Install the lvectl command
yum install lve-utilsThe yum command installs the lve-utils package. It uses the repos already set up on the server. The package provides lvectl. It is the tool that reads and sets resource limits for each account. Run it as root on a server that already has CloudLinux OS.
/usr/sbin/cagefsctl --init
/usr/sbin/cagefsctl --enable-allThe init option creates the CageFS environment. The enable-all option adds every user account to CageFS. CageFS is the isolated file system. It limits what each account can see of the server files.
# List limits for every account
lvectl listThe lvectl list command prints one row for each account. It also prints a default row for new accounts. The columns show speed, physical memory and virtual memory limits. They also show entry processes, process count, I/O speed and I/O operations per second.
# Remount home directories
cagefsctl --remount-allThe CloudLinux docs say to run this command after changes to CageFS. It remounts the home directories. The new CageFS settings then apply to every account. Run it after any change to the CageFS setup.
/usr/bin/cldetect --detect-cpThe cldetect command with the detect-cp option reports the panel. The server runs that panel. The output names the panel that CloudLinux tools work with, such as cPanel. That sets up the correct integration on the Server.
References
These sources are outside Websnoogie and were checked on 2026-10-12.
CloudLinux home page
CloudLinux
The company home page for CloudLinux OS, Imunify360, KernelCare and AccelerateWP. It lists the product families, the hosting use cases and the security products, and it links to the About page, the blog and the documentation.
About CloudLinux
CloudLinux
The About page of the company. It states the mission, the installation and customer counts, the leadership, the headquarters address, the mailing address and the legal name Cloud Linux Software, Inc. with the TUXCARE trade name.
CloudLinux OS components
CloudLinux documentation
The documentation page for CloudLinux OS components. It explains the lve-utils package, the lvectl and cagefsctl commands, Python and PHP selector tools, and the repositories used for CloudLinux 10.
CloudLinux blog and release notes
CloudLinux
The blog page with dated release notes. It lists the kernel vulnerability notes from August to October 2026, with the date of each note, and the notice about package signing for CloudLinux 7, 8 and 9 from 1 December 2026.
CloudLinux OS installation
CloudLinux documentation
The installation documentation for CloudLinux OS. It covers the conversion process from a standard Linux server, the CloudLinux OS 10 Subsystem Mode, and the clean conversion and recovery steps for each supported version.
CloudLinux Shared Pro documentation
CloudLinux documentation
The documentation for the Shared Pro setup of CloudLinux OS. It describes how the server limits resources for shared hosting accounts and how the settings, such as the MaxCacheOptions behavior, are tuned after installation.
A shared server needs limits that protect every site
Since 2004, we have worked on web hosting for small businesses. On a shared server, one busy account can slow every other account. Without limits, a single site with a spike of visitors can use up memory and processing power, and the rest go slow or stop. CloudLinux is a Linux system for shared servers. It sets fair limits on each account, so one busy site does not starve the others.
We check the limits on each shared account we manage. Every account gets a fair share of memory and processing power, so a busy week on one site does not slow another. For a small business, that means a steady site when traffic rises. Plain HTML and PHP hosting from us costs $129 a year, with free Secure Sockets Layer (SSL) and no database.
Content management system (CMS) hosting for WordPress costs $149 a year, and our uptime is 99.999%. Phone 402-813-4034 from 7 am to 10 pm, every day, to ask which plan fits your traffic. Or order the $300 website, delivered in 3 to 5 days, and we will match the hosting plan to the site.
