In my log4j error logs, the datetime is printed in below format, I was trying to write a pattern in grock to parse that, but not getting the proper result.
[yyyy-MM-dd HH:mm:ss.SSS z]
ex. [2018-01-04 15:00:01.361 +0000UTC]
How can I parse such date and send this date as date type value so that I can create the filters as daterange in kibana?