Hi,
As of the 30th of November 2018, Fedora 27 has reached its end of life for updates and support. No further updates, including security updates, will be available for Fedora 27. Fedora 28 will continue to receive updates until 4 weeks after the release of Fedora 30. The maintenance schedule of Fedora releases is documented on the Fedora Project wiki [0]. The Fedora Project wiki also contains instructions [1] on how to upgrade from a previous release of Fedora to a version receiving updates.
Regards, Mohan Boddu.
[0] https://fedoraproject.org/wiki/Fedora_Release_Life_Cycle#Maintenance_Schedul... [1]https://fedoraproject.org/wiki/Upgrading?rd=DistributionUpgrades