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diff --git a/doc/79-Jobs.md b/doc/79-Jobs.md new file mode 100644 index 0000000..09ab602 --- /dev/null +++ b/doc/79-Jobs.md @@ -0,0 +1,40 @@ +<a id="Jobs"></a>Jobs +===================== + +The [background daemon](75-Background-Daemon.md) is responsible for running +Jobs accoring our schedule. Director allows you to schedule eventually long- +running tasks so that they can run in the background. + +Currently this includes: + +* Import runs +* Sync runs +* Housekeeping tasks +* Config rendering and deployment + +This component is internally provided as a Hook. This allows other Icinga +Web 2 modules to benefit from the Job Runner by providing their very own Job +implementations. + +Theory of operation +------------------- + +Jobs are configured via the Web frontend. You can create multiple definitions +for the very same Job. Every single job will run with a configurable interval. +Please do not expect this to behave like a scheduler or a cron daemon. Jobs +are currently not executed in parallel. Therefore if one job takes longer, it +might have an influence on the scheduling of other jobs. + +Some of you might want actions like automated config deployment not to be +executed all around the clock. That's why you have the possibility to assign +time periods to your jobs. Choose an Icinga timeperiod, the job will only be +executed within that period. + +Time periods +------------ + +Icinga time periods can get pretty complex. You configure them with Director, +but until now it didn't have the necessity to "understand" them. This of course +changed with Time Period support in our Job Runner. Director will try to fully +"understand" periods in future, but right now it is only capable to interpret +a limited subset of timeperiod range definitions. |