There is an integrity checking software called AIDE shipped by Red Hat® Enterprise Linux® 5. AIDE provides some general strategy for implementing integrity checking to detect the intrusions when they have occurred. » Read more
To get information about the version of PHP installed on the system, create a php file on the web server called phptest.php with the following code in the file:
<? phpinfo(); ?>
Save the file and open it from a web browser. This will display information about php.
YouTube is a very popular web service that allows people to share video content online. Although YouTube and other streaming video websites satisfy many users, you may have reasons to create your own streaming video website. Perhaps you work for a company that wants a more professional face on their media. Or, you may want more control over exactly how your videos are presented.
I am a soldier in the U.S. Army, currently deployed to Afghanistan. I wanted to be able to share videos with my family from away from home. I wished to maintain my privacy and have better control over my audience. Whether you wish to share videos for educational purposes, share screencasts for documenting software features, or simply entertain, this article will show you how to set up a streaming video website using open source software.
This technique outlines acquiring a video stream from a digital video camera, processing the video stream to the distribution format, and creating a website that will stream the video to users. » Read more
Image file size depends on the amount of image details it has. The higher the image quality, the better the resolution but the larger the resulting file size. Web galleries tend to load very slow and sometimes inaccessbile if photos have very high resolutions.
The mogrify command allows users to resize multiple image files at once. mogrify comes with the ImageMagick package. ImageMagick is a program used to resize, rotate, manipulate and display images. It can read, convert and write images in JPEG, TIFF, PNM, GIF and other Photo CD image formats. » Read more
This one’s a two-fer! Dan Walsh covers the evolution of SELinux from Fedora 2 all the way to the upcoming Fedora 9 launch. Find out how it started and how user access controls will grow in the newest release. As a bonus, this is also a preview of Walsh’s scheduled talk at the upcoming Red Hat Summit. Want more? Check out the schedule of talks and register–and we’ll see you in Boston.
When SELinux was first developed, the goal was to confine as many system processes as possible to the least amount of privilege required. Fedora 2 was released with SELinux policy that confined users as well as system processes. We quickly realized that SELinux policy was not mature enough to handle a modern mainstream desktop operating system. After a quick redesign of the policy, we created “targeted” policy, replacing the previously named “strict” policy. The goal of targeted policy was to “target” certain processes in the operating system for confinement and leave the rest of the processes “unconfined.” » Read more
Meet Bela Ban, a developer who began the JGroups and JBoss Cache projects. He’s now the technical lead of the JBoss clustering team, continuing the work he began as an college instructor.
Ban talks about the background of both projects, as well as upcoming developments, including increased throughput, persistence, security, remote accessibility, and other features. He also discusses the business needs that can be solved with these tools–just a small sample from his talk at JBoss World.
Note: This article assumes that you are already familiar with Red Hat® Network (RHN) Satellite server and its applications.
Red Hat Network Satellite server allows users to locally host subscribed content from Red Hat Network and custom content in user-managed channels. An example configuration could include a server syncing content updates directly from RHN, while another mission-critical server could be disconnected from the external network, yet still receive updates via manual syncing. In the latter case, these offline servers must be manually updated regularly. Since content updates cannot be synced directly from rhn.redhat.com, RHN Satellite provides two options for our users:
1. Channel dump ISOs hosted on RHN, per Satellite release.
2. RHN-Satellite-Exporter tool running locally on a RHN Satellite server » Read more
No, hardware must meet certain requirements to support full virtualization in Red Hat Enterprise Linux 5. For x86_64-based systems, the processor must support Intel VT-x or AMD-V technology. For Itanium2-based systems, the system must use a Montecito (or newer) processor.
In addition to CPU support, the system BIOS must also support full virtualization. Please contact the system vendor to determine if the BIOS supports full virtualization.
(Note that if this Knowledgebase article was linked from a system listing on the Red Hat Hardware Catalog, the system in question does not support full virtualization.) » Read more
