[CentOS] Reduce existing CentOS 7 installation to "Minimal install" - services?

Fri May 6 12:08:06 UTC 2016
Scott Robbins <scottro11 at gmail.com>

On Fri, May 06, 2016 at 11:13:10AM +0200, Nicolas Thierry-Mieg wrote:
> you're probably removing too many packages, eg some key package is a
> dep of MINIMAL but not in MINIMAL, and "yum remove" removes it and
> all its dependants.

Just as an example of this, and one that RH may move into an update
sooner or later.  Fedora 24's minimal comes with NetworkManager.  I always
remove it and use network.  So, on Fedora 24, which is admittedly in beta,
/etc/resolv.conf is now a part of NetworkManager, a symbolic link
 to /var/run/NetworkManager/resolv.conf. So,if one removes NetworkManager
or even disables it, name resolution no longer works. 

It seems to me that the easiest thing would be to quickly run a minimal
install in VirtualBox, and if you remove anything, keep an eye on it, or,
as was suggested, below.

> Or replace yum remove with "rpm -e" to see if and who in $SUPPRIMER
> has deps in MINIMAL.

Scott Robbins
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