What is CloudLinux OS?
CloudLinux OS is the leading platform for multitenancy. 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 increases profitability.
CloudLinux is a Linux based operating system that is essentially a set of kernel modifications to the Linux distribution that implements features to enable system administrators to take fine-grained control of their server’s resource use, isolating users so that problems with one account don’t degrade the service for others. Cloud Linux virtualizes user accounts called LVE ( Lightweight Virtual Environment ). Each LVE is allotted a certain amount of resources. If a particular account receives a sudden large amount of traffic or begins to use a lot of CPU or memory, rather than slowing the entire server and possibly causing a failure, it will slow only that particular LVE.
How does CloudLinux help shared hosting environments?
A shared hosting environment is where thousands 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 usages 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.
Cloud Linux Features –
1- Individual set of Server Resources for each client –
With the LVE ( lightweight virtualized environment ) technology in cloud Linux, 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- Make your Hosting Environment Stable –
Sudden traffic spikes from other website accounts will never mean downtime for any website account or the server as a whole. Since every website account has its own allocated resources protected keeping the website running though there is a sudden spike in server resource usage from other websites hosted on the server.
3- Make your Server Secure –
CloudLinux’s hardened kernel helps prevent malicious users from attacking other website accounts hosted on the server.
4- Multiple Version of PHP –
Cloud Linux has a feature called PHP selector. It allows end-users to select the specific version of PHP they need. It allows ultimate flexibility by offering all popular versions of PHP, with more than 120 PHP extensions to choose from. CloudLinux packages PHP versions 4.4, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 7.1, 7.2, 7.3 and 7.4. The convenient UI lets a customer switch between versions, select the extensions, and adjust PHP settings.
5- Stability of Mysql Database –
MySQL often becomes a major headache for system admins in shared hosting environments. Keeping MySQL stable might be difficult, and customer queries can easily slow everything down. The MySQL Governor Feature of Cloud Linux helps system admins to pinpoint abusers and throttle them in real-time. With support from the latest versions of MySQL and MariaDB, it is a must-have for any shared host. The MySQL Governor feature tracks CPU and disk IO usage for every website account in real-time and throttles MySQL queries by using same-per-user LVE limits.
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