Showing posts with label AWS. Show all posts
Showing posts with label AWS. Show all posts

Monday, March 18, 2013

Bowlus for AWS

To learn the upcoming Azure IaaS Virtual Machine, I decided to migrate Cloud Samurai project (code named Bowlus) to IaaS infrastructure. Since Azure IaaS is not GA yet, I did this first on Amazon AWS. This  also gave me an opportunity to learn and compare the IaaS offering from both Azure and Amazon.

After the initial redesign for IaaS, I found the benefit of IaaS is rather obvious:

  • Use the more mature IIS Web Deploy cmdLine tool to provision web site, instead of update IIS configure file directly.
    • Updating IIS configure file is a little bit dangerous, and it will cause troubles when concurrent access is not managed well.
    • Web Deploy is mature tool which is also used in Visual Studio to deploy web site to Azure. 
    • Using Web Deploy generates deployment logs, which helps diagnosis and auditing.
    • De-provisioning web site using Web Deploy is also cleaner and safer.
    • This is only possible under IaaS, since you have to pre-install Web Deploy tool and other dependent services in the VM.
  • Reduce two layers: routing + hosting, into one layer. The design is thus more simple and robust.
    • This change might also work in PaaS. Need further investigation.
    • IaaS gives us more flexibility to manage end points on each VM, and thus makes this design change more natural.
This is the live test link:


This is the new design for AWS: