What Is CloudLinux, and Why Use It?

What is CloudLinux?

The archived article introduces CloudLinux as a Linux distribution designed to manage resources and performance in shared hosting environments. It traces the product to 2009 and discusses it alongside CentOS, OpenVZ and RPM-based systems. Those platform details belong to the original text and require review against current versions.

Its central point is that each hosting account can be assigned a defined share of system resources, helping balance usage across customers on the same server.

Main features described in the article

• User isolation (CageFS): A separate virtual filesystem for each user is described as a way to limit access to other users’ files and reduce the impact of one account on others.
• Resource management: CPU, memory, I/O and other limits help distribute resources and control excessive usage.
• Security: The source mentions suPHP, ModSecurity and Fail2ban in its discussion of protective tools.
• Performance: The source lists LVE, PHP optimization and MySQL optimization among its performance-related features.
• Ease of management: A web interface and command-line tools are described as ways to configure and manage the system.

Why does shared hosting need resource isolation?

A shared server hosts multiple websites. Without account-level controls, a busy site may consume a large share of available resources. The article discusses traffic spikes and attacks as examples of events that can affect other sites, and presents isolation as a way to reduce that impact. It should not be read as a guarantee that every slowdown or outage can be eliminated.

Benefits described in the source

• Greater server stability: Limiting one account’s resource use can reduce its effect on other accounts.
• Improved security: Protective tools and isolation are presented as helping safeguard websites.
• Performance: Resource controls and optimization features are described as helping sites load more efficiently.
• Management: Web and command-line interfaces provide administration options.

Disadvantages described in the source

• Cost: The article contrasts CloudLinux licensing costs with free Linux distributions.
• Complexity: It describes the system as more complex than CentOS.
• Support community: It considers its community smaller than the CentOS community at the time.

Is CloudLinux secure?

The article explains CageFS in terms of separating website directories so that access to one account does not automatically provide access to others. It also records HostTurka’s use of CloudLinux on its Linux servers at the time. This is historical content, not a statement of the current scope or guarantees of any hosting package.

This article was originally published in Turkish on 5 October 2016 and has been migrated from our previous website. This English version is a translation of the original article. The content may reflect information from that time.