Hello Miguel,
later versions of oVirt are using software collections to run
postgres ( it allows you to run different versions and configure the correct environment.
Get the id for the everyone group
https://engine.example.com/ovirt-engine/api/groups?search=everyone
Get the id for the UserRole
https://engine.example.com/ovirt-engine/api/roles
connect to the engine database ( the engine pass..d should be in
/etc/ovirt-engine/engine.conf.d/10-setup-database.conf)
e.g. for oVirt 4.3 which uses postgres10
scl enable rh-postgresql10 -- psql -h localhost -U engine -d engine
select * from permissions where ad_element_id='groupid';
note the id of the permission, probably the last one but you can check by the role_id
then delete the permission.
delete from permissions where id='noted before';
you may want to make a backup before.
Regards,
Paul S.
I am posting this again via HyperKitty the email at users(a)ovirt.org wasn't responding