title: Ansible remote_user vs ansible_user
body: <p>The question is simple: what is the difference between <code>ansible_user</code> (former <code>ansible_ssh_user</code>) and <code>remote_user</code> in Ansible, besides that the first one is set if configuration file and the latter one is set in plays / roles? How do they relate to <code>-u</code> / <code>--user</code> command line options?</p>