Figured. in the logstash config file I used "copy" function under "mutate", while I actually need to use "add_field" function.
details in LogStash::Json::GeneratorError when using mutate copy @timestamp
Figured. in the logstash config file I used "copy" function under "mutate", while I actually need to use "add_field" function.
details in LogStash::Json::GeneratorError when using mutate copy @timestamp
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