CloudLinux OS is the leading platform for multi-tenancy. It improves server stability, density, and security by isolating each tenant and giving them allocated server resources. This creates an environment that feels more like a virtual server than a shared hosting account. By doing so, CloudLinux OS reduces operating costs and churn rates, and increases profitability.
CloudLinux OS is designed for shared hosting providers. It isolates each customer into a separate “Lightweight Virtualized Environment” (LVE), which partitions, allocates, and limits server resources, like memory, CPU, and connections, for each tenant. This ensures that tenants cannot jeopardize the stability of your servers, causing all sites to slow down or even come to a halt. CloudLinux OS also “cages” tenants from one another to avoid security breaches. This way, unstable scripts or malware are not able to sprawl across your customer sites, causing severe harm.
How does CloudLinux help shared hosting environments?
A shared hosting environment is where hundreds of website accounts are hosted on a single server sharing the server resources equally. However, the server admin has limited control over individual website accounts’ server resource usage. If one website account is using an unfair amount of resources (e.g. due to being under a DDoS attack, poorly written script, increase in traffic etc.), the server would become slow or go down completely, affecting all other customers on the server. In traditional hosting we can not set a limit for RAM, CPU and other resource usage for a particular website account. Finding problematic websites is again a time consuming job and fixing such issues sometimes requires suspension of the website accounts creating the problems. This can all lead to a few unsatisfied customers which can adversely affect your business.
CloudLinux Features –
1) Personal set of server resources for each customer –
With the LVE ( lightweight virtualized environment ) technology in CloudLinux , each customer’s website account has a separate set of allocated resources such as Memory , CPU etc.. The LVE technology makes sure that these resources are not shared with any other website accounts.
2) Stable Hosting Environment –
The CloudLinux OS Lightweight Virtualized Environment is a kernel-level technology that isolates each tenant into their own environment and provides them with the amount of resources (CPU, IO, memory, processes, etc.) that can be used – specific to each individual customer. If the tenant hits the limit, other users will not notice anything, because the offender is immediately throttled. This eliminates resource spikes, server overloads, and angry phone calls from customers.
3) Secured & Hardened Kernel –
Cleaning up a hacked server is a nightmare. Yet, defacement and hacked accounts is something hosters battle on a daily basis. Beyond taking your support team’s time, it also tarnishes your company image and causes customers to leave in droves. The main reason hacking is so easy on shared hosting servers is because Linux was never meant to be used by a large number of not vetted users. It is too easy for a hacker to obtain an account on your server (by using a stolen credit card and signing up or by abusing some outdated script one of your customers has not updated for years). After that, a hacker has inside access to the server and can begin poking around, finding low hanging fruit and hacking your server.
4) Stable MySQL Database Performance –
CloudLinux OS offers a set of powerful features that greatly optimize performance of your servers.
Mod_lsapi is the fastest and most reliable way to serve PHP pages. It has a low memory footprint and understands PHP directives from .htaccess files.
MySQL is one of the main causes of issues on a shared server. MySQL Governor monitors MySQL usage, and throttles abusers, preventing them from overloading the server and improving overall stability and performance.
With such features and the advanced technologies of CloudLinux, maintaining a shared hosting environment stable gets easier and clients stay happy.