Meaning of ** in filter input context

While attempting to sort out my recalcitrant ELK setup, I am finding scattered examples of logstash filter patterns like:

file { path => "/var/log/**/*" }

Does this have any specific meaning?

The problem at hand is getting logstash to recognise logs in nested folders, e.g.


Yes, it means search for files recursively under /var/log/. Alternatively you could use /var/log/service/*/*/* if you want to be a bit more specific in your path.

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Thank you Shaunak. I recommend this feature gets a mention in at least one or two places. It's hard to find!

Thanks for your suggestion. I have submitted a pull request to add this to the doc: