Re: How do you know when a reboot is required after yum update?

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Donald Russell wrote:
> There have been times though when "things seemed odd" after a
> particularly large number of updates were applied... rather than spend
> untold amounts of time trying to solve them, I did a quick reboot...
> perhaps that was overkill, but it definitely caused all processes to
> restart.

Well, in general besides for a kernel update not much necessitates a reboot. In general, if 'things seem odd', you might want to consider one or more of the following things before a reboot: a. Log out and log back in (if updates seem to contain a lot of desktop related stuff) b. Log out, kill and restart the X/display manager (Ctrl+Alt+Backspace) (if there is an xorg package in the update)
c. Login through a virtual console (Ctrl+Atl+F[12345]) as root
    i. Go to init level 3 and return back to init level 5
   ii. Go to init level 1 and return back to init level 5
(if there are a whole bunch of updates which you don't want to check/guess about)

That was just a kind of thumb-rule -- the steps may/may not be necessary, but they are better than a reboot.
> Perhaps if I knew more of the internal details of what's what, I'd have
> known that all was needed was to restart daemon "x"...
>
> But, I'm not a member of that elite group (who know everything and are
> much holier than "Windows mindset" people), so I do what works quickly
> and leaves little unknown afterward.

Like Roberto, I do not intend to offend, but it is generally a good idea to:

a. Know what the services that are currently running on your system do. I don't mean you should read up all the man pages for all the daemons in depth, just learn why a service is/isn't required to run and then turn off the unnecessary ones.
b. Know what are the effect of the updates that you apply. Again, i don't mean
read the changelog for all the updates being applied ...just check to see which
area of the system they affect.
It takes just a little time but you'll learn a lot about your system that way. I
know I do.
hth,
cheers,
- steve

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