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As mentioned earlier, it is not always obvious when a particular
service should be reconfigured. Should a daemon be stopped and
restarted if necessary to force a reconfiguration? Or should we
restart it during the night? Or should we wait until the next reboot?
In practice, we never force a reconfiguration immediately whenever a
specification changes (although this would not be hard to do). Those
services which can be reconfigured while a machine is running, are
normally reconfigured nightly by a cron job. Other services are
reconfigured at boot time. It is possible for configuration changes to
schedule a night-time reboot if it is essential that they are
implemented as soon as possible.
A simple client-server application (om/omd) allows scripts
on any remote machine (or group of machines) to be executed manually.
Paul Anderson & Alastair Scobie