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When all configurations are created, the Arbiter sends them to the N active Schedulers. A Scheduler can start processing checks once it has received and loaded it's configuration without having to wait for all schedulers to be ready(v1.2). For larger configurations, having more than one Scheduler, even on a single server is highly recommended, as they will load their configurations(new or updated) faster. The Arbiter also creates configurations for satellites (pollers, reactionners and brokers) with links to Schedulers so they know where to get jobs to do. After sending the configurations, the Arbiter begins to watch for orders from the users and is responsible for monitoring the availability of the satellites.
Pollers connections with more than one scheduler
The high availability
The Shinken Enterprise architecture is a high availability one. Before looking at how this works,let's take a look at how the load balancing works if it's now already done.
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The availability parameters can be modified from the default settings when using larger configurations as the Schedulers or Brokers can become busy and delay their availability responses. The timers are aggressive by default for smaller installations. See daemon configuration parameters for more information on the three timers involved.
This can be explained by the following picture :
External commands dispatching
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