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== For administrators ==
== For administrators ==
''concern innovations that help make system administrators' lives better.''
=== libguestfs ===
=== libguestfs ===
Revision as of 23:53, 16 September 2009
This page contains the highest-level talking points for the Fedora 12 release. When adding to this page, consider points that have a wide appeal, and consider whether or not there is a "bigger picture" that needs to be described. In some cases, a feature is part of a multi-release arc of work, and that context can be useful to provide.
- 1 For desktop users and everyone
- 2 For administrators
- 3 For developers
For desktop users and everyone
List 2-4 bullet items here for innovations in Fedora 12 that will be of general interest to most people using F12. The best talking points are differentiators between F12 and other distributions -- newer software, specific improvements, or cases where Fedora contributors either are, or work directly with, the upstream project(s).
PackageKit command-line and browser plugins
PackageKit is a technology that was first introduced in Fedora 9 to provide a set of distribution-neutral software management tools. It has since been included in a number of other distributions and is growing quickly in popularity due to its flexibility and quick feature integration. In Fedora 12, PackageKit has grown the ability to automatically install the software packages that provide new commands when the user is operating a text terminal. It also now supports a browser plugin that allows software vendors of any size to provide automatic installation of software packages using simple HTML <object> tags.
PackageKit makes it easier to install and upgrade programs on your computer.
NetworkManager, which was introduced in Fedora 7, has become the de facto network configuration solution for distributions everywhere. Fedora 12 includes enhancements to NetworkManager to make both system-wide connections and mobile broadband connections easier than ever. Signal strength and network selection are available for choosing the best mobile broadband connection when you're on the road. And if you're at a system that requires an always-on connection or static addressing, NetworkManager will now allow you to configure that connection directly from the desktop, and includes PolicyKit integration so configuration management can be done via central policy where needed.
NetworkManager makes it easy for you to find a strong signal, get online, and stay online.
Next-generation Ogg Theora video
For several years, the open, free, and patent-unencumbered Ogg Theora format has provided a way for freedom-loving users to share video. Fedora 12 includes the new Theora 1.1, which achieves near-H.264 quality in a completely free and open codec and format. Already, as a direct result of Red Hat contributions, in partnership with Xiph and Mozilla, users of the Firefox 3.5 browser can immediately enjoy free media on the web, using the Ogg Theora video and Ogg Vorbis audio formats. With the introduction of Theora 1.1, the quality of free video can meet or exceed user expectations, delivering crisp, vibrant media in both streaming and downloadable form.
Ogg Theora video lets you stream and download near-Blu-Ray video quality while using 100% free and open software, codecs, and formats.
These talking points concern innovations that help make system administrators' lives better.
Fedora has long been a leader in making it easier for administrators to manage virtual machines, evidenced in the early development and integration of virt-manager. Fedora 12 continues this tradition by introducing libguestfs and guestfish. libguestfs is a library for accessing and modifying the disk images of virtual machines, and when combined with guestfish --- the libguestfs interactive shell --- replaces the old and cumbersome methods of creating loopback mounts as root, kpartx and reconfiguring LVM. It is particularly adept at making batch configuration changes to guests, collecting disk statistics, migrating between virtualisation systems, performing backups, cloning guests and more. Libguestfs uses Linux kernel and qemu code, and as a result can access all of the same file systems they are capable of, including but not limited to ext2/3/4, btrfs, FAT and NTFS.
KVM huge page backed memory feature, KVM stable guest ABI feature, KVM NIC hotplugging feature, KVM qcow2 performance feature, Network interface management feature, Privileges feature, GPXE feature, Storage management feature
As virtualization becomes an increasingly important part of IT infrastructures, the Fedora community has stepped up with a large number of virt-related features in Fedora 12. Administrators can now choose to use huge page backed memory to reduce memory consumption and improve performance by reducing CPU cache pressure, retain VM hardware profiles across qemu upgrades, add network interfaces to a KVM guest without restarting, and enable VM hosts to discover new SAN storage and issue NPIV operations. Several changes have been introduced to QEMU/KVM virtual machines to improve host security in the event of a flaw in the QEMU binary, and the deprecated etherboot pxe booting infrastructure has been replaced by gpxe. Fedora 12 also features the qcow2 image format for disk images, which improves the I/O performance of virtual machines, as well as improved tools for interface configuration. These are only a few virt-related improvements in Fedora 12; many more are available.
Smaller RPM packages
Fedora is used in a wide range of circumstances, and not all have the luxury of a high speed broadband connection with unlimited downloads. This presents a number of challenges, not the least of which is making it easier for users to get updates which will help ensure their system is secure and stable. In Fedora 11, Presto was made available which reduced update size by transmitting only the changes in the updated RPM packages. In Fedora 12, RPMs are being switched from using gzip to XZ for compression, providing smaller package sizes without the memory and CPU penalties associated with bzip2. Not only does this result in smaller downloads, but it also allows for more software to be squeezed into the final release, and less space to be taken up on our mirrors, making their administrators' lives a little easier.
This area is for 1-3 bullets that discuss innovations that make Fedora a great platform for software developers.
SystemTap Eclipse integration and tracing improvements
SystemTap provides a scriptable free software infrastructure to simplify the gathering of information about the running Linux system, eliminating the need to go through the instrument, recompile, install and reboot sequence that is other wise needed to collect data when diagnosing performance or functional problems. Fedora 12 brings two significant improvements to SystemTap. First, a new version has been packaged which brings with it a number of benefits, including the ability to take advantage of updated gcc debuginfo and kernel tracepoints, as well as providing better examples, tools and development extensions, which enables programmers to include static probe markers in their programs. Secondly, it has been closely integrated with the Eclipse IDE so developers can now launch SystemTap scripts on their C/C++ projects from within Eclipse itself, as well as providing an anchor for linking SystemTap data with Eclipse graphics.
The NetBeans Platform and NetBeans IDE have been part of Fedora for a long time now, and developers who use Fedora have come to appreciate the fact that the latest features have always been available to them. Fedora 12 ensures their expectations continue to be met and exceeded, with packages being rebased to the latest stable release, NetBeans 6.7.1. As part of this, two new packages have also been introduced, jemmy and cobertura. All of this results in a number of new features, including maven support for the creation of plugins and web services, C++ support for profiling and Java ME support CDC projects in the bundled Java ME SDK 3.0.