CloudLinux alternative
Per-account limits without a CloudLinux licence
Koapanel's Isolation & limits module gives every account its own CPU, memory, process and disk limits and an isolated PHP, like CloudLinux. It's included in every plan, runs on Ubuntu 24.04 with the stock kernel and installs in one click.
Pricing
What isolation costs.
CloudLinux is paid per server, on top of the panel. In Koapanel the module comes with every plan, the Free one included.
| Servers | CloudLinux OS | Koapanel | Yearly saving |
|---|---|---|---|
| 1 server | $18.00 a month per server | included | about 188 € |
| 5 servers | $14.00 a month per server | included | about 730 € |
| 20 servers | $14.00 a month per server | included | about 2,922 € |
| 50 servers | $13.00 a month per server | included | about 6,783 € |
CloudLinux OS "Unlimited Hosting Accounts" (formerly Shared Pro), official US-dollar list price with volume discount (source), converted at €1 = $1.15, VAT excluded. The saving counts the CloudLinux licence only, not the panel's.
Features
Feature by feature.
| Aspect | Koapanel | CloudLinux OS |
|---|---|---|
| Per-account limits | CPU, memory, processes, I/O, IOPS, concurrent PHP requests, files, database connections | LVE: SPEED, PMEM, NPROC, IO, IOPS, EP, inodes |
| Where they're set | Package, single account, server defaults; overall cap per reseller; WHMCS module options | Panel packages, LVE Manager, command line |
| Isolated file system | PHP, cron and the site shell see only their own sites, the system read-only, a private /tmp | CageFS |
| Symbolic links | Protection like SecureLinks | SecureLinks |
| Database | Optional limiter: database CPU and longest query per account | MySQL Governor |
| Slow sites | X-Ray: guilty plugin, theme or file of every slow page | X-Ray |
| Outgoing mail | Hourly mail limit per account (sites and mailboxes together) | From the panel or separate tools |
| PHP | PHP 7.4–8.5 chosen per site | PHP Selector |
| Ruby, Python, Node.js | No | Per-account selectors |
| Graphs and alerts | 24 hours and 30 days per account, limits hit, email to administrator, reseller and customer, ranking, Monday report | LVE Manager and LVE statistics |
| System and kernel | Ubuntu 24.04 with its own kernel, systemd and cgroup v2 | CloudLinux OS with its own kernel and modules |
| Installation | One click from the panel, with the sites online; uninstalls the same way | Operating system conversion and reboot |
| Cost | Included in every plan | From $18.00 a month per server |
CloudLinux, CageFS, LVE, SecureLinks, MySQL Governor, X-Ray are trademarks of their respective owners, cited for comparison only. Information as of September 2026, based on public price lists and documentation.
Migration
From cPanel on CloudLinux, limits included.
The SSH migration from a cPanel server with CloudLinux reads each account's LVE limits and an administrator imports them in one click, together with sites, databases, cron jobs and mailboxes. How it works.
Where Koapanel wins
- No extra licence: across 50 servers the saving tops €6,000 a year.
- No kernel to replace: stock Ubuntu 24.04, security updates from Canonical.
- Reversible: install it with the sites online and, if you don't need it, remove it and the server goes back as it was.
- All in the same panel: limits in packages, graphs, alerts and selling limits from WHMCS.
Where CloudLinux wins
- Ruby, Python and Node.js per account, with their selectors.
- Works with cPanel, Plesk and DirectAdmin, Apache and LiteSpeed included.
- A wider ecosystem: Imunify360, AccelerateWP and years of use at the largest shared hosts.
FAQ
Before you switch.
Do I need it on a server with few sites?
Usually not: the module isn't installed by default. It becomes useful when one server hosts several customers' sites and one misbehaving site must not slow the others down.
How much memory does it use?
About 10 MB per account, for its separate PHP. With PHP on demand only recently visited accounts use memory.
Can I sell limits to customers?
Yes: in the WHMCS module CPU, RAM, processes, I/O, database connections and emails per hour are configurable options.
How does it work under the hood?
With systemd and the cgroup v2 of Ubuntu's kernel: every account has a slice with its limits and a PHP-FPM of its own. We explain it step by step in the guide CloudLinux alternative with cgroup v2.
Isolation and limits, without another licence.
Free up to 3 websites for personal use. When you grow, pick the right plan: every feature is included in every plan.