ELK: Using Ruby in Logstash filters - Fabian Lee
https://fabianlee.org/2017/04/24/elk-using-ruby-in-logstash-filters/
webApr 24, 2017 · Using logstash-filter-ruby, you can use all the power of Ruby string manipulation to parse an exotic regular expression, an incomplete date format, write to a file, or even make a web service call. Logstash Installation. If you haven’t installed Logstash already, refer to the official instructions here. Sample event.
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