Howto tell the Director to use a specific host for expensive checks?

Yes, we did (and had huge problems after some time). And we switched to defining satellite zones and endpoints in the masters zones.conf files.

I second that. The Director even has a (cryptic) warning about that feature.

If you want your agent to behave like a satellite you need to add it to the masters zones.conf. After that you can use it as a zone inside the Director (after a kickstart).

And then basic Icinga behavior: every check without command_endpoint/“run on agent” setting will be executed on the satellite for each host you put into the satellites zone.

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