Running commands on all of your cloud servers

I consider my cloud servers to be one big array of servers.

I decided to use "fog" - the Ruby API for the Rackspace Cloud - to build something to let me, in one step, run commands on all of the servers.  It turned out to be pretty straightforward.


You might have a different model - an array of web servers, another array of db servers, and another array of compute servers, for example.  If so, you can easily extend the code to work with your different groups of servers by querying for whatever differentiates them.