I am still bootstrapping from "hands on on every server" to "autonomous system administration".
I edit and test my policy on one server, and then scp the config files to the other boxes.
My Cfengine runs from cron once per hour:
0 * * * * /var/cfengine/bin/cfexecd --no-fork
I can also run it by hand, as for developing or testing policy:
cfagent -v -f cf.filename
Or in extra-careful "make no changes/debug" mode:
cfagent --verbose --no-edits --inform --parse-only -d3 --dry-run