http://blogs.plexibus.com Thoughts, questions and opinions - some from the trenches, a few from the Ivory Tower Mon, 08 Mar 2010 22:22:51 +0000 http://backend.userland.com/rss092 en At this month's St. Louis Cloud Computing User Group a question was posed: What does Reservation id mean when an AMI instance is provisioned? And what is it's use? If you do not know what I'm talking about, see the following command ec2-run-instances (and it's output) which is used to launch ... http://blogs.plexibus.com/2010/02/23/amazon-ec2-reservation-id-and-one-of-its-uses/ Most newer processors from Intel (VT) and AMD (AMD-V) now come with hardware support for virtualization. Which makes using virtualization frameworks or hypervisors like KVM, XEN, etc. possible.But before you jump into virtualization, how can you find out if your existing infrastructure/machines support it?In Linux, you can do this by ... http://blogs.plexibus.com/2010/01/21/does-your-processor-support-virtualization-technology/ In the Windows world, connecting and managing SSH sessions to multiple Linux hosts is made easy by using putty in conjunction with putty connection manager (PuTTY-CM). The three features I really like about PuTTY-CM are: Ability to re-size and arrange windows (SSH sessions to multiple Linux machines) within the parent window Ability ... http://blogs.plexibus.com/2010/01/19/no-putty-cm-for-the-mac-will-have-to-do-with-iterm/ I recently started using a MacBook Pro and it is turning into my primary development machine. And in the process I'm learning more about Mac OS X every day. For instance, when I first started using Eclipse on the Mac, I could not figure out how to start multiple instances ... http://blogs.plexibus.com/2010/01/05/running-multiple-eclipse-editor-instances-on-mac-os-x/ Bashisms are bash extensions that are not strictly POSIX compliant. Using some of these extensions can lead to portability issues between different shells. Since Ubuntu 6.10, the default system shell, /bin/sh, was changed to dash. This change will cause /bin/sh scripts to fail if bash extensions exist. There is a ... http://blogs.plexibus.com/2010/01/04/bashisms-and-ubuntu/ In this post, I have laid out instructions on installing Appistry CloudIQ on Ubuntu. Since Appistry does not provide a .deb package on it's download site, I composed these instructions once I converted and installed the .rpm on my Ubuntu OS. The various steps detailed below are available as a ... http://blogs.plexibus.com/2010/01/04/appistry-cloudiq-on-ubuntu/ alien is a program that converts between Red Hat rpm, Debian deb, Stampede slp, Slackware tgz, and Solaris pkg file formats. Install alien First check if alien is installed roshan@ubuntuWorkerB:~$ alien The program 'alien' is currently not installed. You can install it by typing: sudo apt-get install alien -bash: alien: command not found Since alien is ... http://blogs.plexibus.com/2010/01/04/install-rpms-packages-on-ubuntu-using-alien-2/ There are various ways to do this. The approach discussed here uses Windows Scripting Host (WSH) and probably offers the least amount of resistance and the most bang for the buck. All Windows OSes with the exception of Windows 95 (I think) come with WSH pre-installed. And if you need it ... http://blogs.plexibus.com/2009/04/14/setting-system-environment-variables-in-windows-using-windows-scripting-host/ First of all a big thank you to all who made it for my talk at Community One East, NY. It was on "Cloud Computing for Enterprise Software Developers". After the talk I had a chance to network with some really smart people and talk about Appistry's CloudIQ Platform and ... http://blogs.plexibus.com/2009/03/19/community-one-east-and-cloud-application-platforms/ As mentioned in my earlier post, Project Kenai is the home for Sun's Open Cloud APIs which is a single point of management for the Sun Cloud. Sun is releasing these APIs under a open source license. Sun is looking forward to receiving feedback on these APIs so as to ... http://blogs.plexibus.com/2009/03/19/community-one-east-project-kenai-and-extensions-to-support-cloud-application-platforms/