According to This Earlier Posting, the ‘
unattended-upgrades‘ package updated a whole slew of MySQL packages this morning, that of course form the most important database engine on this machine (‘Phoenix’). As an automated part of the process, the update restarted the MySQL Server process, which runs as a system service.
However, the way KDE works, it has an Akonadi Server for ‘PIM’ (Personal Information Management), which runs its own, local MySQL database engine, as part of the user session, which is of course not restarted automatically, because to do so would also interfere strongly with a running session.
And yet, this latter process can also be brought up-to-date, by just logging out the (graphical) desktop session, and logging back in again. Doing so should not affect any of the system processes, which either run as ‘
root‘, or which run as a vestigial, system user-name. Likewise, doing so should not affect the Web-server.
Hence, to bring my session up-to-speed, I performed this logout / login successfully and without ado, which actually took from 15h15 until 15h25.
Yet, there was An Earlier Situation, in which an attempt to do the same thing went wrong.