Extract data from one field and add that in another filed

Elastic Stack Logstash
1

all i have is events with content of log in message field , now i want to add few new fields and add relevant data to that field , how to achieve that?

2

Have a look at this introduction to Logstash, which shows how to use grok and dissect to parse content.

3

ss
ss.png1600×900 184 KB
i have this now i want to remove message field and add fields like "machine name", "Stack trace" etc.