The previous chapters all discussed the installation and configuration of services, the setting up of things. For a server, however, it is equally important to ensure that those services continue to function and that if they don't, they can be made functional again as soon as possible.
Three tasks are important in this respect:
Keeping the software up to date
Software updates are published with a reason: they add new functionalities, but more importantly, they bring more stability, reliability, and security. ...
