Skip to main content
I know I should move on and start a new blog but I'm keeping this my temporary home.

New project, massive overkill in website creation. I've a simple project to put up a four page website which was already somewhat over specified in being hosted on AWS and S3. This isn't quite ridiculous enough though so I am using puppet to manage an EC2 instance (it will eventually need some server side work) and making it available in multiple regions. That would almost have been enough but I'm currently working on being able to provision an instance either in AWS or Rackspace because...well...Amazon might totally go down one day! Yes, its over-the-top but I needed something simple to help me climb up the devops and cloud learning curve.

So off the bat - puppet installation. I've an older 10.04 Ubuntu virtual server which has been somewhat under-taxed so I've set that up as a puppet master. First lesson - always use the latest version from a tarball unless you have kept the OS upgraded. Getting puppet dashboard working alongside this isn't too much of a strain however it would help if everyones instructions included details to cd into the install direction to run rake and a rough note of where that directory is likely to be. I've linked Vide's post since its one of the few with the instruction to cd and on ubuntu for me its /usr/share/puppet-dashboard. Of course, it just illustrates that I am getting old since I should have realised that rake was looking for a local file because its just ruby's verion of make....doh!

Next up comes provisioning - this is why you need the latest stable version. Follow the instructions over at puppet labs on getting started with cloud provisioning...you may find that you also need to update gem from source :

( URL="http://production.cf.rubygems.org/rubygems/rubygems-1.3.7.tgz" PACKAGE=$(echo $URL | sed "s/\.[^\.]*$//; s/^.*\///") cd $(mktemp -d /tmp/install_rubygems.XXXXXXXXXX) && \ wget -c -t10 -T20 -q $URL && \ tar xfz $PACKAGE.tgz && \ cd $PACKAGE && \ sudo ruby setup.rb )


Sorry I cant attribute the above. So I'm about to spin up some instances....

Comments

Post a Comment

Popular posts from this blog

Camshift Tracker v0.1 up

https://code.google.com/p/os6sense/downloads/list I thought I'd upload my tracker, watch the video from yesterday for an example of the sort of performance to expect under optimal conditions ! Optimal conditions means stable lighting, and removing elements of a similar colour to that which you wish to track. Performance is probably a little worse, (and at best similar to) the touchless SDK. Under suboptimal conditions...well its useless but then so are most trackers which is a real source of complaint about most of the computer vision research out there.....not that they perform poorly but rather that there is far too little honesty in just how poorly various algorithms perform under non-laboratory conditions. I've a few revisions to make to improve performance and stability and I'm not proud of the code. It's been...8 years since I last did anything with C++ and to be frank I'd describe this more as a hack. Once this masters is out of the way I plan to look a
Post a Comment
Read more

Finally...

Children back at school and I'm back off my hols (a rather interesting time in Estonia if you're interested). I've spent most of the last week becoming increasingly frustrated with my attempts at image segmentation. I've moved to a c++ implementation for speed and, while the VERY simplistic HSV segmentation technique I am using works, the problem is that I cannot get it to work robustly and doubt that it will ever do such. I've now covered the range of available techniques and even tried to plumb the depths of just emerging ones and it seems that every computer vision based object tracking implementation or algorithm suffers for the same issue with robustness (openTLD, camshift, touchless, hsv segmentation and cvBlob etc etc). YES, it can be made to work, but issues include (depending on the algorithm) : - Object drift : over time the target marker will cease to be recognised and other objects will become the target focus. - Multiple objects : During segments
Post a Comment
Read more