Upgrading Fedora 20 to Fedora 21 using yum

With Fedora 21 released yesterday, apart from downloading the images, it is possible to directly upgrade from version 20 using yum. This procedure has changed compared to previous due to fundamental changes experienced Fedora same for the current version; so we must be careful when doing so that your desktop or laptop upgrade to the Workstation version correctly.

From a terminal enter the following command.

 [Ali@Linux ~] $ sudo rpm --import / etc / pki / rpm-gpg / RPM-GPG-KEY-fedora-21 - $ (uname -i)
 [Ali@Linux ~] $ sudo yum update yum-and [Ali@Linux ~] $ sudo yum clean all [Ali@Linux ~] $ sudo yum --releasever = 21 distro-sync

Upon completion reboot and is sufficient. But we also have the ability to install one of the various products of Fedora 21.

To install Workstation

  [Ali@Linux ~]$ sudo yum install system-release-workstation

To install Cloud

 [Ali@Linux ~] $ sudo yum install system-release-cloud

To install Server

 [Ali@Linux ~] $ sudo yum install system-release-server

It is also possible to change the installed sitema another. For example, to change Cloud Server, we would do as follows. Of course this has its risks, due to some bugs reported that some files left with incorrect SELinux contexts.

  [Ali@Linux ~] $ sudo yum swap system-release-cloud-release-server system

If you end a problem with services or files with incorrect SELinux contexts is detected, run the diguiente command and reboot.

  [Ali@Linux ~] $ sudo restorecon -R /

https://fedoraproject.org/wiki/Upgrading_Fedora_using_yum