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Let's take a look at two distributed environnements. In the first case the administrator wants totally distinct daemons. In the second one he just wants the schedulers/pollers to be distincts, but still have one place to send notifications (reactionners) and one place for database export (broker).
Distincts realms :
More common usage, the global realm with reactionner/broker, and sub realms with schedulers/pollers :
Satellites can be used for their realm or sub realms too. It's just a parameter in the configuration of the element.
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