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

How about using yum history to find when and why the package was installed?

yum history summary dnsmasq
yum history package-list dnsmasq

Jamie

On Wed, 27 Jan 2021 at 20:56, Kenneth Porter <shiva at sewingwitch.com>
wrote:
> --On Wednesday, January 27, 2021 3:31 PM -0500 Stephen John Smoogen
> <smooge at gmail.com> wrote:
>
> > or one can look for the comps file in /var/cache/yum
> >
> > network-tools has dnsmasq listed as a package
> >
> > repoquery says the following on my rhel box
> > NetworkManager-1:1.4.0-20.el7_3.x86_64
> > libvirt-daemon-driver-network-0:4.5.0-36.el7_9.3.x86_64
>
> Aha! It's actually in network-server ("Network Infrastructure
Server")
> group. network-tools is the next one in the comps.xml file. The group name
> sounds like something I might have wanted for my application, but the
> contents are really for a lightweight server like one finds in a consumer
> router.
>
> But, except for dhcp and radvd, none of the other packages in that group
> are installed, so I still don't see how I got dnsmasq on my system.
Here's
> the network-server package list:
>
>       <packagereq type="optional">dhcp</packagereq>
>       <packagereq
type="optional">dnsmasq</packagereq>
>       <packagereq
type="optional">freeradius</packagereq>
>       <packagereq type="optional">quagga</packagereq>
>       <packagereq type="optional">radvd</packagereq>
>       <packagereq
type="optional">rsyslog-gnutls</packagereq>
>       <packagereq
type="optional">rsyslog-gssapi</packagereq>
>       <packagereq
type="optional">rsyslog-kafka</packagereq>
>       <packagereq
type="optional">rsyslog-mysql</packagereq>
>       <packagereq
type="optional">rsyslog-pgsql</packagereq>
>       <packagereq
type="optional">rsyslog-relp</packagereq>
>       <packagereq
type="optional">syslinux</packagereq>
>       <packagereq
type="optional">syslinux-tftpboot</packagereq>
>       <packagereq type="optional">tang</packagereq>
>       <packagereq
type="optional">tftp-server</packagereq>
>
>
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--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?