The KernelCare Linux kernel patching service is a system offered by CloudLinux. This product provides ongoing security patches for many Linux kernel versions. Updates are installed live without requiring a system reboot, which is a tremendous incentive when running an active server. Because CloudLinux offers a free symlink (symbolic link) protection patch for servers running CentOS 6 and 7, Liquid Web is replacing existing versions of KernelCare with this free version.
A virtual machine is a simulated computer system which runs on a physical computer. In other words, a virtual machine is a computer inside a computer. Virtual machines allocate memory, a virtual CPU, disk storage space, and a network interface. This means that we can have a Windows computer that runs multiple virtual machines composed of Ubuntu Linux, macOS, Windows 10, Solaris, and CentOS, and they will all be completely separate from our parent Windows operating system.