xeef

was to late in the morning and my brain wasnt working properly

in case some one is interested

aws amazon

have 2 identical instances running (or what ever kind you want)
you need 2 elastic ip s

dns setting in dns server:

mysite.com A 1.2.3.4
http://www.mysite.com A 10.20.30.40

log in to wordpress on mysite.com
wordpress->settings->general
WordPress Address (URL) and Site Address (URL) change mysite.com
to http://www.mysite.com
nothing will work after that and chrome for example cashing the site in some way so even after closing it or chrome it self it wont work
you need to erase chromes cache or you will get redirecting errors even after you done the next step
go to ec2 console
assign the ip mysite.com is on to http://www.mysite.com
assign the ip http://www.mysite.com was on to mysite.com

job done

not sure if all works as i expect for some strange reason 1
image set in the theme itself has reverted to its original
state on 1 of the instances ?!
but anything else seams fine