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CloudLinux keeps your servers up and your customers happy even under extreme stress. That's because each tenant is isolated in their own lightweight virtualized environments (LVE) and given a predetermined amount of resources. If one customer suddenly gets a huge amount of traffic any ill effects will be contained to only that customer.
Traditional shared hosting environments have no control over individual tenants in the event of a resource spike. If one tenant suddenly experiences a big resource spike from a large amount of traffic, poorly written script, or a denial of service attack, all the other tenants on the server are slowed or brought down. CloudLinux isolates each tenant so that no matter what, the tenant can never exceed the resources allocated to them. During a sudden resource spike all other tenants are left unaffected!
CloudLinux technology gives hosters full control over CPU, IO, Memory, Number of Processes, and Concurrent Connections limits. Now they can limit abusers while allowing good customers to use what they need. They can also set limits on per-package bases and enjoy this feature as a new upsell opportunity, creating packages with more CPU and Memory and selling them to those customers who need that.
MySQL Governor is a set of utilities to monitor and operate MySQL usage in a shared hosting environment. The monitoring is done via resource usage statistics per each MySQL thread. New MySQL Governor tracks exact CPU and IO usage as it happens. With such real-time statistics, we can instantly detect abusers and throttle them.
CageFS is a virtualized per-user file system that uniquely encapsulates each customer, preventing users from seeing each other and viewing sensitive information. Additionally, CageFS prevents a large number of attacks, including most of the privilege escalation and information disclosure attacks. This innovation is completely transparent to your customers without any need for them to change their scripts.
With this new CageFS tool, each customer can select PHP version as well as modules customer wants to use. And CloudLinux makes sure that PHP is updated fast, making sites more secure and customers pleased.