In our cloud environment, we have the ability to add and remove access to and from the instance publicly by adding or removing a floating IP address to or from it. This flexibility allows us to move services seamlessly between instances. To the outside world it would appear to be the same instance, as their access to it via that IP has not changed to them.
To begin with, ensure you are logged in to a client machine running euca2ools or Nova Client.
To disassociate a public (floating) address from an instance using euca2ools, carry out the following steps: