Re: RHN Update
From: Michael Schwendt (fedora_at_wir-sind-cool.org)
Date: Wed, 16 Feb 2005 13:38:14 +0100 To: firstname.lastname@example.org, General Red Hat Linux discussion list <email@example.com>
On Tue, 15 Feb 2005 21:41:02 -0600, Brad Carpenter wrote:
> OK, basic question here, we are running RHEL3 AS using it for ISP functions,
> last time I connected to RHN it wanted to download a caching-nameserver,
> which I did, which took over and made our secondary DNS server "fall off the
> We recovered fairly easily, albeit very nervously, and wish NOT to run into
> such problem again.
> Question is "Are there updates that we should ignore on a system like this?"
> And if so, how does one go about picking and choosing what to skip and what
> to keep?
> I see posts that say "update everything" all the time, is this the way it is
> expected to work?
Yes. Precisely, get the security/bug-fix updates for all packages you
have installed already. Be careful when adding new packages to your
installation which don't replace existing old packages.
The caching-nameserver package you installed was not present on your
system before and hence overwrote existing config files with its new
contents. Probably just /etc/named.conf and local zone files in
Once installed, the config files within RPM packages are protected in two
ways against being overwritten during updates. Depending on how an RPM
package is configured, an update either creates *.rpmsave backup files of
existing config files or stores its new config files in *.rpmnew where you
can review them before copying any new default settings to your existing
Where you can choose a custom name for config files (e.g. zone files in in
/var/named) choose a good namespace that's unlikely to be used by RPM
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