# Grok filter for a custom message

**URL:** <https://discuss.elastic.co/t/grok-filter-for-a-custom-message/163527>\
**Category:** Logstash\
**Created:** [January 9, 2019, 12:27pm UTC](https://discuss.elastic.co/t/grok-filter-for-a-custom-message/163527 "2019-01-09T12:27:54Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![mrashid](https://avatars.discourse-cdn.com/v4/letter/m/9fc348/32.png) [@mrashid](https://discuss.elastic.co/u/mrashid)\
**Post date:** [January 10, 2019, 7:41pm UTC](https://discuss.elastic.co/t/grok-filter-for-a-custom-message/163527/6 "2019-01-10T19:41:32Z")

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@Badger kindly give some input on this : [Copy data from a field and make it available for all the documents](https://discuss.elastic.co/t/copy-data-from-a-field-and-make-it-available-for-all-the-documents/163735)

Thanks a lot.

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