[CentOS] Understanding yum automatic upgrades
email builder
emailbuilder88 at yahoo.com
Wed Apr 6 07:31:03 UTC 2011
> > >> >> Sorry if this is somewhat naive, but I'm a little confused as to
>what
>
> >the
> > >> >> criteria is for that which will get upgraded automatically by yum
>and
> > > what
> > >> >> will not.
> > >> >>
> > >> >> I see in our logwatch messages from time to time that yum upgraded
> > >> >> a bunch of stuff, but I also notice that yum will not upgrade
>other
> > >> >> packages at all (easy example is clamav, but there are others).
> > >> >>
> > >> >> Can someone explain or point me to where I can read about the
> > > distinction
> > >> >> between what is and is not subjected to automatic upgrade?
> > >> >
> > >> > More info: yum-updatesd is running and I do not have yum-cron.
> > > yum-updatesd
> > >> > does a fine job from what I can tell, but I still cannot understand
> what
> > >> > criteria it applies to know which packages get upgraded and which do
>
> >not.
> > >> (?)
> > >> >
> > >> > The yum-updatesd configuration file is ultra-simple, so that doesn't
>
> >seem to
> > >>be
> > >> > where the update choice/distinction is being made.
> > >> >
> > >> > There seem to be people posting in various places that they prefer to
>
> >use
> > >> > yum-cron, but I have no problems with yum-updatesd and I suspect
> >yum-cron
> > >> > wouldn't address/answer my question anyway.
> > >> >
> > >> > Help?
> > >>
> > >> Yum-updatesd does not automatically install packages (unless you
> > >> configure it to), it only notifies you of ones that need updating.
If
> > >> no one is manually doing it, and you don't have "do_update = yes" in
> > >> /etc/yum/yum-updatesd.conf, then you have installed something else
> > >> that is performing the updates automatically.
> > >
> > > It does look like updates are happening, but it's not clear to me by
>whom.
> > > do_update is set to "no", but notification is by "dbus", so I assumed
>that
> > > "dbus" is notifying another process to do the actual updates. Is there a
>
> >way I
> > > can track that down?
> > >
> > >> Are you sure the updates are actually getting installed, and it's not
> > >> just noise in the log from yum-updatesd?
> > >
> > > Well, if I can take it at its word, updates *are* happening. Here is a
> >snippet
> > > I clipped out of a logwatch a few months ago:
> > >
> > > --------------------- yum Begin ------------------------
> > >
> > >
> > > Packages Updated:
> > > php-dba - 5.1.6-27.el5_5.3.i386
> > > php - 5.1.6-27.el5_5.3.i386
> > > php-devel - 5.1.6-27.el5_5.3.i386
> > > php-cli - 5.1.6-27.el5_5.3.i386
> > > php-common - 5.1.6-27.el5_5.3.i386
> > > php-gd - 5.1.6-27.el5_5.3.i386
> > > php-pdo - 5.1.6-27.el5_5.3.i386
> > > php-mysql - 5.1.6-27.el5_5.3.i386
> > >
> > > ---------------------- yum End -------------------------
> > >
> > >> P.S. The yum log doesn't have the year in the timestamp, and if it's
> > >> not active it might not get rotated by logrotate. This can cause
> > >> false messages sent from logwatch about packages that were installed
> > >> last year.
> > >
> > > Hmm, is there a known fix for this?
> >
> >
> > Rotate the log file yourself once a year. You can check if you are
> > seeing this bug by looking at the /var/log/yum.log last modified time.
> > If it was yesterday, then I suppose the packages were installed.
> >
> > As far as your other questions, how does it determine what packages to
> > update, I think you will find it's not actually doing any updating. I
> > have not used yum-updatesd to auto-update packages myself, but I would
> > think it would automatically install any updated package.
>
> It's dated a couple days ago, so I'd say it's doing what it's supposed to.
>I'm
>
> not sure what the "dbus" notification does, but I presume it's telling someone
>
> to do the updating. It'd probably be more informative if I could understand
>who
>
> is picking up such notifications.
/etc/dbus-1/system.d/yum-updatesd.conf
Doesn't really tell me anything. I'm guessing that someone is watching dbus for
notifications, but I can't figure out how to see who that is.
> Do you know how to determine which repo a particular package is from? For
> example, when I do "yum info" against clamav (which isn't receiving automatic
> updates), it just says "Repo: installed". I don't know what repo it comes
>from.
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