On 12/22/2017 09:10 AM, Richard Shaw wrote:
On Fri, Dec 22, 2017 at 8:05 AM, Temlakos <temlakos@gmail.com> wrote:
Running transaction
   Preparing        :                                                                                                                                                                                                                     1/1
  Running scriptlet: cockpit-ws-158-1.fc27.x86_64                                                                                                                                                                                        1/1
groupadd: cannot open /etc/group
useradd: group 'cockpit-ws' does not exist

Check your permissions on /etc/group... It should definitely exist...

Richard 

Permissions are 644. To what should I set them instead?

Temlakos