I am currently using in defaults/main.yml:
myRoleName_host: "{{ ansible_host }}"
but some people feel we shouldn't use ansible_host. I know we
can reference from host_vars but from within the role you have no
guarantee about the host name, so that doesn't seem like a good option.
Or should myRoleName_host just be
a mandatory variable that the play has to set in order to call
the role?
Edit: The goal is to allow the host to be written in the config files/templates that need to be on the server, as well as url variables that the role produces. Other roles depend on these url output variables.