Mastering Proxmox - Third Edition

Applying update without reboot

Although there is no built-in feature in Proxmox that will allow us to update the host without ever needing a reboot, there is a third-party solution to achieve this and never have to reboot again after applying an update. A server reboot can be very disruptive for a busy virtual environment where downtime has a high price tag on it. A service named KernelCare from CloudLinux can solve this issue. More information about KernelCare can be found at https://www.cloudlinux.com/all-products/product-overview/kernelcare.

Simply put, what KernelCare does is applies security patches on the runtime kernel without needing to reboot a node. This allows a node to stay updated at all times. Due to the possible downtime, many ...