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agent_blackhole
Remote blackhole agent declaration in the distributed index. Multi-value, optional, default is empty. Introduced in version 0.9.9-rc1.
agent_blackhole lets you fire-and-forget queries
to remote agents. That is useful for debugging (or just testing)
production clusters: you can setup a separate debugging/testing searchd
instance, and forward the requests to this instance from your production
master (aggregator) instance without interfering with production work.
Master searchd will attempt to connect and query blackhole agent
normally, but it will neither wait nor process any responses.
Also, all network errors on blackhole agents will be ignored.
The value format is completely identical to regular
agent directive.
Example:
agent_blackhole = testbox:9312:testindex1,testindex2
