Is it possible to limit the fields value for the output in logstash?
I'm using SNMP trap and I have a lot of different type of MIB, so I have a lot of indexed fields in Kibana and after few days, elasticsearch is not responding because there is a timeout.
Here is a view from kibana (show the number of fields) :
Your mutate filter's gsub option acts on the contents of a field, but you want to rename the fields themselves and there's no stock filter for that. I think you need to write a small snippet of Ruby in a ruby filter to accomplish what you want.
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