use the resolveHosts role to allow nodes to resolve other nodes by name. conifugre the dependenices for resolveHosts to use the role etcHosts if you would like to put all hosts in /etc/hosts or create a new role for a dnsclient if you would prefer

get_or_make_passwd.py will generate a random password and save it in a text file, use it to make MySQL/postgres passwords or munge keys etc etc