CentOS - Jan 2021 - How to query which yum package groups a particular package is member of

--On Wednesday, January 27, 2021 11:35 PM +0000 Jamie Burchell 
<mail at jamieburchell.com> wrote:
> How about using yum history to find when and why the package was
> installed?
>
> yum history summary dnsmasq
> yum history package-list dnsmasq
Very nice!

The oldest record of the second command:

 1 | Dep-Install    | dnsmasq-2.66-12.el7.x86_64

I'm guessing that means it was a dependency for something back then. Is 
there a way to discover what? Using "yum history info 1" I see that
this
was the original Anaconda install from 2014. Could dnsmasq be in the 
original minimal disk installer?

On Wed, 27 Jan 2021 16:21:33 -0800
Kenneth Porter <shiva at sewingwitch.com> wrote:
> I'm guessing that means it was a dependency for something back then.
> Is there a way to discover what? Using "yum history info 1" I see
> that this was the original Anaconda install from 2014. Could dnsmasq
> be in the original minimal disk installer?
Try `yum remove --assumeno dnsmasq` and see what it wants to remove.
On my system I get

--> Processing Dependency: dnsmasq >= 2.41 for package:
libvirt-daemon-driver-network-4.5.0-36.el7_9.3.x86_64

Jim

On Wed, 27 Jan 2021 16:21:33 -0800
Kenneth Porter <shiva at sewingwitch.com> wrote:
> I'm guessing that means it was a dependency for something back then.
> Is there a way to discover what? Using "yum history info 1" I see
> that this was the original Anaconda install from 2014. Could dnsmasq
> be in the original minimal disk installer?
Or one can also run `rpm -q --whatrequires dnsmasq`.

Jim