Disclaimer: I work for CleverScale: the company that developed the CDN federation tool hereby mentioned. This is the first of a series of “How-Tos” on how to use a CDN to accelerate the most diffused CMSes and Blog packages with the least impact possible. Joomla! is one of the most diffused CMS, it accounts for [...]
All professions nurture their specific type of idiots; IT is no exception. The particularly variegated diversity of idiots we meet in our professional life makes me wonder, every given time, if there could possibly be a limit to asininity. And every time I discover that no, there is none. I always have been comforted by [...]
Ceph is a distributed Object Storage and file system, it’s a distinctive piece of software in its own category for two reasons: It is developed in C++ (thus, offering speed and device-level integration) It provides a shared network block device driver offering POSIX access to Linux (the Kernel module is the subject of this post). [...]
For the last few weeks I have been evaluating Nimbula Director’s Beta, in the course of my experiments I had my confirmation that Director is a valuable piece of software and I started to think seriously to invest some more time on it. However, Nimbula is pretty secretive about their road-map; even their Beta release [...]
SARA, the Dutch National High Performance Computing (HPC) and e-Science Support Center, is organizing a “Hadoop Hackton“. The event is scheduled for December 7th 2010 to be held at their premises in Amsterdam (Science Park 121). The “hackathon” will be a hands-on introduction to Hadoop. Attendees are invited to come spend a day at SARA [...]
When Installing a Jobtracker of any Hadoop cluster, be careful on how these two files interact each other: /etc/hosts $HADOOP_HOME/conf/mapred-site.xml To make a long story short, this is very wrong: $>cat /etc/hosts 127.0.0.1 localhost tophat 192.168.3.60 tophat And, if you resolve to hostname in mapred-site.xml $>cat $HADOOP_HOME/conf/mapred-site.xml <!– Put site-specific property overrides in this file. [...]
Day 3 at the Amsterdam conference of the Open Group was dedicated to Cloud Computing. The date, October 20th 2010, coincided with that of the CloudCamp London #9, facing a difficult choice, I decided to explore the uncharted territory of the Open Group. My rationale was simple: I have never (yet) seen or read a [...]
I have been “re-factoring” my CV. The objective is to avoid lengthy lists of skills, acronyms, technologies It’s about time to present myself fit for this millennium’s 2nd decade, so, this is an idea I had on how to present my skills and experience overview: I am working on the assignment timeline, I am looking [...]
