Have virt-sysprep to cleanup /etc/hosts

[lzap]

Hello Rich!

We had a request in Foreman to do cleanup /etc/hosts in our finish template (something like cloud-init but over ssh for those who don't use it). I closed the request with reference to the virt-sysprep tool but shortly after I started digging if the tool actually touches /etc/hosts and I am actually unable to find this.

However it does cleanup hostname from ifcfg scripts: https://github.com/libguestfs/libguestfs/blob/master/sysprep/sysprep_operation_net_hostname.ml. Therefore I am raising this ticket to consider also cleaning up /etc/hosts. It does make a lot of sense.

Thanks!

[rwmjones]

https://bugzilla.redhat.com/show_bug.cgi?id=1809480

Hi Lukáš, as we don't use github for issues etc I filed an upstream bug, see link above. Do you have a better idea about what entries exactly we'd remove/change in /etc/hosts? It'd be good to add some examples of the sorts of changes you mean to the BZ.

[lzap]

Absolutely, thanks.