Going green is becoming a well-worn path to saving green—greenbacks, that is. In that spirit, green-IT specialist Green Rack Systems has announced Eco Enclosures, a new line of data-center equipment designed to reduce IT budgets while reducing environmental impact. The turnkey Eco Enclosures solutions, which can be customized to customer needs of any size, contain chassis that are made from recycled materials and are fully recyclable. To save power, Eco Enclosures contain features such as “low-wattage multicore CPUs, low-voltage memory, low-power hard drives and ultra-low consumption power supplies”. Green Rack also offers solar-powered Web hosting and custom-built data centers upon request.
GroundWork Monitor is a free, open-source, Nagios-based VMware virtual appliance for network management. It runs on CentOS and ships with a wide range of additional network tools. The new version 5.3 adds features such as updated Eclipse BIRT reporting views, Nagios 3.0.5 and the ability to monitor more than 1,000 different types of devices; automatic notifications of patches, updates and news; voluntary sharing of usage statistics; autodiscovery functionality and increased scalability. The Community Edition is available for download from GroundWork's Web site.
Ditch one ugly black box by deploying TRENDnet's new TEW-635BRM NADSL 2/2+ Modem Router. The wireless-n device combines modem and router functions and operates at 300Mbps, or 12x the speed and 4x the coverage of wireless g. The switch includes four ports. Key features of the TEW-635BRM include one-touch synchronized Wi-Fi Protected Setup (WPS), the latest in wireless encryption, a double firewall and advanced antenna technology (MIMO) that delivers broad coverage and minimizes dead spots. The device also sports green credentials, such as ENERGY STAR and RoHS compliance—the former related to power consumption and the latter to restricting hazardous substances in electronic equipment.
Learning databases can be fun? Such is the premise of Mana Takahashi and Shoko Azuma's new book The Manga Guide to Databases, published by No Starch Press. The book uniquely fuses Japanese-style comics with serious educational content on databases. It tells the story of Princess Ruruna's challenges in managing the Kingdom of Kod's humongous fruit-selling empire. Tico the fairy teaches the princess how to simplify her data management, and together they design a relational database. They cover concepts such as the the entity-relationship model, basic database operations, SQL statements, database tuning, security, concurrency and replication. Other features include examples and exercises (with answer keys) and an appendix of frequently used SQL statements.
If you want to learn Python and your learning style is visual, offer up a gleeful shout for Wesley Chun's new instructional video Python Fundamentals. Part of Prentice Hall's LiveLessons series, the video course mirrors topics covered in its sister publication, Core Python Programming, Second Edition. Covered are both Python fundamentals, such as syntax basics and standard types and operations, and advanced topics, such as Python's memory model and object-oriented programming. The publisher states that both new and experienced users will find the product useful. The companion booklet contains review questions and coding exercises.
Hot off the assembly line at Round Solutions is the new AarLogic C10/3, a diminutive Linux-based breadboard covering a mere 104mm x 63mm of real estate. The board sports quadband GPRS and SiRF3 GPS modules; interfaces for USB, RS-232 and Ethernet; SD-card reader; 4MB of RAM and dual ARM processors. The processor module is responsible for GSM functionality and for applications executable under embedded Linux. Connectivity options via the board's 192-pin socket include not only keyboards, digital cameras and reading devices but also WLAN, Bluetooth and GPS components. Round Solutions adds that the AarLogic C10/3 can be easily coupled with a camera or environmental sensors. Ideal applications include self-sufficient positioning and monitoring systems due to the wireless provision of spatial coordinates.
James Gray is Products Editor for Linux Journal.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.Register Now!
- SUSE LLC's SUSE Manager
- My +1 Sword of Productivity
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Managing Linux Using Puppet
- Non-Linux FOSS: Caffeine!
- Doing for User Space What We Did for Kernel Space
- SuperTuxKart 0.9.2 Released
- Google's SwiftShader Released
- SourceClear Open
- Parsing an RSS News Feed with a Bash Script
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide