If you administer your own server(s), sooner or later you face this problem: you have to reboot the operating system, but the machine provides an important service that you can’t interrupt. But why reboot in the first place? Everything seems to be working fine after an apt-get upgrade command. However, things are not always as they seem. Even though the system happily continues to run after every upgrade, not forcing a reboot like Windows does, it might still need one. For example, when a vulnerability in the core of the system (kernel) is discovered, it is patched… Read more