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

[Julien Le Houérou]

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.