There is something I do not understand about remote_user.
When I set a remote_user at the top level of a playbook, when it comes to tasks, it seems to use my user name on the invoking machine (there is a similarly named user on the target) to execute the task unless I also specify the desired remote_user at the task level. Is that the expected behaviour? If so, what is the use of setting remote_user at the top level? Is it simply to log in?
Thanks for any clarifications. BTW I use the latest git cloned version of Ansible and my target is a Debian 7 server.