What does yum do when an updated package requires a new configuration file?

[Tim Largy]

On Apr 7, 2005 9:06 PM, Robert Locke <lists at ralii.com> wrote:
> On Fri, 2005-04-08 at 02:26 +0200, Julien Le Houérou wrote:
> > Tim Largy wrote:
> >
> > >Hi,
> > >
> > >What does yum do when an updated package calls for a new configuration
> > >file? A concrete (though made up) example: a new version of samba is
> > >installed, and the syntax of /etc/samba/smb.conf has changed
> > >sufficiently that the existing smb.conf is unreasonable or no longer
> > >valid. (Of course in real life this hasn't happened with samba for a
> > >while.) I presume that yum would notify me (how?), as well as save my
> > >old smb.conf to a new name so that I could merge it with the new
> > >version. The yum man page doesn't address this however.
> > >
> > >Tim
> > >
> > >
> > >
> > The existing config file for packages such as services or daemons
> > remains unchanged, the new one is saved as (in case of samba) :
> > /etc/samba/smb.conf.RPMNEW as wells as it notifies you at install time.
> > This is performed by rpm and not by yum.
> >
> 
> Yes, this is performed by rpm, but you need to take it a step further.
> The question was not what happens if the config file has "minorly
> changed" but rather what happens if there is a major change.  This is
> actually decided within the rpmbuild process as part of the spec file.
> Most likely, in his case, it would rename the original file with
> a .rpmsave extension and put the new file in its place.  Only if the
> configuration file is marked with (noreplace) in the spec file would it
> do as you described and this is normally done when there has not been
> any kind of major change in the configuration file syntax or options.
> 
> --Rob

Thanks. So after updating with yum I will run:

find /etc -iregex '.*rpmsave\|.*rpmnew'

which should tell me which files to merge (at least for the ones in /etc).