Virtuozzo ReadyKernel (Discontinued)
On September 21, 2017 Virtuozzo announced that they were planning to [discontinue the support of Virtuozzo ReadyKernel](https://help.virtuozzo.com/customer/portal/articles/2878194). For that reason, the Virtuozzo ReadyKernel extension has been discontinued as well. The extension can no longer be installed. If you have installed and configured Virtuozzo ReadyKernel on your server, you need to uninstall it before October 21, 2017. We recommend replacing it with the [KernelCare extension](https://ext.plesk.com/packages/04992b06-f95e-4d6b-be49-a466ade680df-kernelcare-plesk). It is developed by CloudLinux and provides similar functionality as ReadyKernel. To install the extension, log in to Plesk, go to Extensions > Catalog, and then search for "KernelCare".
# 1.1.1 (12 October 2017) * [*] The extension has been discontinued and can no longer be installed. # 1.1.0 (29 May 2017) * [+] Ubuntu 14.04 and Ubuntu 16.04 are now supported. # 1.0.1 (06 February 2017) * [-] If multiple versions of kernel were installed in the operating system, the extension could display an error message even if the patch was installed successfully. (EXTPLESK-159) * [-] If no patches were available for the operation system kernel, the extension displayed a non-informative message. (EXTPLESK-160)