In prior blog posts, I described Infrastructure as a Service (IaaS) and
Platform as a Service (PaaS).
If I use IaaS I get servers onto which I can load software and applications
which I then maintain, though I don't need to maintain the hardware. I can
customize the applications and software running on the servers, at will. If I
use PaaS, I get a platform of ready to use web servers, application servers,
databases etc. I write my own software application and host it at the PaaS
provider. I maintain the software I write, but not the application servers,
databases or hardware. I can customize the software I write, at will
Finally, we reach the top of the stack: Software as a Service (SaaS).
SaaS is simply software that I use for myself or my organization, but often
with limited customization.
Characteristics of SaaS:
SaaS customers are provided with login cre... (more)
OpenStack is an open-source cloud framework for building on-demand
Infrastructure as a Service.
This tutorial in essence distills from this two-page set of instructions for
setting up devstack on a single server primarily for use by developers.
I used a DELL 1950 with 8 GB of RAM, internal hard-drives and two 1000 MB
Download and Set Up Ubuntu
Download Ubuntu 11.10 from here and burn to DVD Boot the server from the DVD
and start the install. I installed the BASE SYSTEM and only one optional
package, the OpenSSH Server. I named my server "ubuntu-server" I configured... (more)
When you host applications in the public cloud, you assume partial
responsibility for securing the application. The cloud provider, for example
Amazon Web Services (AWS), secures the physical data center (with locked
badge entry doors, fences, guards etc) in addition to securing the physical
network with perimeter firewalls. This is no significant change from how you
secure your corporate datacenter.
Just like you enhance the security of physical and virtual servers in your
datacenter with host-based firewalls (ip tables, Windows firewall),
anti-virus and intrusion detection, so... (more)
Have you ever been invited to present a product solution and within a few
minutes the audience is thumbing on their mobile devices?
Have you ever presented to a remote audience and asked the end "any
questions?" and there are none?
Here are some tips for giving a great demo. (Credit to this material goes to
Peter Cohan of The Second Derivative who presented this material at a
workshop I attended and have me permission to write a summary)
What is a bad demo?
"Let me show this awesome product and all its cool features."
What is a good demo?
Presentation of specific product functions ... (more)
OpenStack is an OpenSource offering of Infrastructure as a Service (IaaS).
For a review, here is a quick overview of IaaS and OpenStack.
OpenStack is admittedly not trivial to manually install. I have started a
manual install beginning with the Identity Service (keystone) here, other
modules to follow.
To simplify the deployment of OpenStack some organizations and vendors offer
scripts or downloads:
OpenStack offers a scripted install Dell open-sourced crowbar RackSpace
offers Alamo Mirantis offers Fuel which I will cover in this article. Fuel
from Mirantis, is basically a "DIY"... (more)