Do you really need to keep m_date if you store the timestamp in @timestamp?
No, but how to convert, how to store 'm_date' as '@timestamp' ?
If the date filter can't parse a string it'll tell you why in the Logstash log.
That's the weird part , I see it on kibana as string, but there is no error in /var/log/logstash/logstash-plain.log
it looks like it is ignoring it, or override it...
Can I define the match from 'message' field inside the 'date' without using grok.
Or maybe there is another way (couldn't do it using console with (painless).
Maybe you can point me to other options i should check
Thank you very much
PS
Can i change string from epoch time to date on kibana