When i am trying to use yum groups commands in RHEL 7 it is giving me following output.#yum groups listThere is no installed groups file. Maybe run: yum groups mark convert (see man yum)I have created my own repository and gpgkey is disabled for it.All yum related commands are working except the yum groups command.
problem while using  yum groups 
centos;rhel;yum;rpm;man