Fedora 22 Linux Debuts
Fedora 21 was a difficult release for Red Hat's community Linux distribution, introducing a new release paradigm, a new project leader and a very long release cycle. Fedora 22 which is set to officially be released on May 26 on the other hand, follows Fedora 21 by six months and is a continued evolution of the changes that have already been introduced.
As was the case with Fedora 21, Fedora 22 is available in cloud, server and workstation editions. Underpinning all three editions is the new Linux 4.0 kernel, which was first released on April 12. Among the big new features that the Linux 4.0 kernel introduces is live kernel patching.
Another key feature that now is implemented across all Fedora product is a shift to the DNF, which according to the Fedora project, stands for 'Dandified Yum'. Yum was the predecessor package manager that was used for Fedora distribution releases prior to the new Fedora 22 milestone. DNF offers the promise of improved performance and stability over Yum.
" yum has been replaced with dnf as the default package manager. dnf has very similar command line options and configuration files compared to yum but also has several major internal changes including using libsolv in coordination with friends from the openSUSE project for faster and better dependency management. dnf-yum provides automatic redirection from yum to dnf in the command line for compatibility. The classic yum command line tool renamed to yum-deprecated as a transitional step for tools still using it. "
On the server-side as is the case with Red Hat Enterprise Linux, the default filesystem is now XFS, which is more robust than a typical EXT4 based system. The Rolekit capability now has a database option, enabling Fedora Server to rapidly be deployed as a PostgreSQL database server platform.
Fedora has also continued to work on RPM-ostree which is a transactional update system, that Red Hat's answer to Canonical's Ubuntu Snappy.
"You can even use rpm-ostree-toolbox to generate your own Atomic hosts from a custom set of packages. "
Looking at the cloud specific product, there are now updates for Docker and Kubernetes for managing containers. As well, the Fedora Cockpit server management tool gets some enhancements for improved server management.
Developers are always a focus for Fedora, and Fedora 22 is no exception. Among the big thing that DevOps types will notice is the new Tunir Continuous Integration (CI) tool.
Overall, Fedora 22 is not a release that will turn heads, which is a good thing after the monumental changes of Fedora 21. Fedora 22 is a stability and evolution release that existing Fedora users will likely want to update too rapidly.
Sean Michael Kerner is a senior editor at Linux Planet and InternetNews.com. Follow him on Twitter @TechJournalist