Category: IT Admin

Tips & Tricks: JB348 Application Administration II

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by Bruce Wolfe (Red Hat)

Furtureproof Installation

When planning your installation of JBoss EAP 6, you have three choices; ZIP, JAR or RPM. The JAR based installer is, arguably, the best and most flexible option because it will generate an answer file that can be used for silent, repeatable installs; great if you have to install JBoss on multiple servers (e.g. clustering). Using the answer file, repeat the install with:

$ java -jar jboss-eap-installer-<version>.jar <answer_file>.xml

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Guest Post / Martin Elliott: From computer club to computer career

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Our partners are typically closer to students than we at Red Hat headquarters are. As such, we like to regularly hear from both of them for insight into training, into the IT industry and into IT professionals. One such training partner, 1Staff Training, is certainly among those with a finger squarely on the pulse of what’s happening in IT education. Based in Omaha, Nebraska, 1Staff Training has been delivering technical training since 1996, educating over 28,000 students and rating consistently as a leader in IT education by the International Data Corporation. 1Staff Training recently spoke with one of its Red Hat System Administration I (RH124) students to get his thoughts about the course and his career, and how both are interrelated.

NOTE: The opinions, statements and other information included in this post are those solely of the interview subject and may not be representative of Red Hat.

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Guest Post: Bruno Lima, Red Hat Certified Professional of the Year, EMEA

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by Bruno Lima

Becoming EMEA’s Red Hat Certified Professional of the Year was very easy. I just wrote a letter and crossed my fingers, haha. Jokes aside, I believe I became a Red Hat Certified Professional of the Year because when I entered my submission, I not only wrote a reply, I relayed how Red Hat is integral to both the story of my life and in my career. From the innovative projects I’ve participated in to the satisfaction of our customers, Red Hat has meant a lot to me.

I started using Red Hat technologies in the mid-90s when open source was still unknown by many and ignored by almost everyone. I remember my first installation of Red Hat, which was at a public company in a small town called Sao Luis in Brazil. It was where I was born and raised. The company needed a reliable solution to run an electronic mail system, and at that moment the only platform that met our needs was to use the Red Hat Linux with Sendmail. I never stopped using Red Hat technologies after that, using Red Hat and open source for more and more projects.

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Using Activation keys in CloudForms System Engine

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by Forrest Taylor (Red Hat)

Corresponding Curriculum: Content is extracted from the all-new Deploying Systems in Cloud Environments (CL260) course

Activation keys automate client repo subscriptions when registering to Red Hat CloudForms System Engine. Activation keys can define subscriptions and the default environment for a system. To manage activation keys, log in to System Engine and hover over the “Systems” tab, and choose the “Activation Key” sub-tab. Click the “+ New Key” link and enter the name and environment, then click the “Save” button.

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Updates to the Red Hat Enterprise Clustering and Storage Management course

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by Wander Boessenkool (Red Hat)

With the release of the updated Red Hat Enterprise Clustering and Storage Management Course (RH436) for Red Hat Enterprise Linux 6 a couple of new subjects have been introduced, while others have been updated to reflect the changes in the Red Hat High-Availability Add-On moving from Red Hat Enterprise Linux 5 to Red Hat Enterprise Linux 6.

One of the most noticeable new subjects in this updated course is the inclusion of an introduction to highly available, distributed, scalable storage using Red Hat Storage Server. Other updates include the use of multipathed storage throughout the course, as well as coverage of the XFS® file system.

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Guest Post: Sean Millichamp, Red Hat Certified Professional of the Year

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by Sean Millichamp (Secure-24)

Being chosen as the worldwide Red Hat Certified Professional of the Year has been a bit surreal. It has been an incredible honor and fantastic experience, especially being at the Summit this year. One of the questions I have been asked over the past few weeks is, “Sean, how did you do it? How were YOU the one chosen as the RHCP of the year?” The easy answer is that I wrote an essay and they chose me. But I believe that the real answer at the heart of things is open source, the community and many years of experience.

My first introduction to Linux in 1993 with Yggdrasil LGX was a spectacular failure. I’d found Yggdrasil for $10 at a local computer expo and bought it because I thought it would be neat to learn something about Unix. It lasted maybe a week and then it was off my system and forgotten. I couldn’t get networking to work. I couldn’t get X-Windows to work. I barely knew how to list files in a directory. What went wrong? I could point to a lot of things but my main trouble was the lack of hardware support and my complete lack of Unix skills. In retrospect, the biggest failure was that I had no idea about the Linux community out there (and without an Internet connection, I had no way to access it).

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What is CloudForms?

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by Vinny Valdez (Red Hat)

The following is an excerpt of a post originally published on June 29, 2012, on Vinny’s Tech Garage.

I’m really excited about CloudForms. In my recorded demo at Summit, I showed a RHEL 2-node active/passive cluster with GFS off an iSCSI target. Then I moved all the underlying CloudForms Cloud Engine components to shared storage. I was able to launch instances, fail over Cloud Engine, and see the correct status. After managing the instances, fail back, and all was good. All of this works because the RHEL HA cluster stops the databases and other services first, moves the floating ip over, then starts the services on the active node. This was a very basic deployment, much more could be explored with clustered PostgreSQL and sharded Mongo.

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Reducing friction in agile development using cloud

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by Zach Rhoads (Red Hat)

One of the core tenants of agile development is to focus on the tasks that are the highest priority and immediate need. This is sometimes referred to as “Just-in-Time” development. The idea is to focus on the tasks needed to ship the feature now and worry about everything else when it is actually needed. Another tenant that goes hand-in-hand with “Just-in-Time” is the idea of failing early. Basically, a team should know as early as possible if something is going to fail, that way the team does not waste time going down the wrong path. This means the team should develop a feature and solicit feedback in short cycles, allowing the team to quickly understand what works and what does not.

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