# Logs parsing
**URL:** https://discuss.elastic.co/t/logs-parsing/106012
**Category:** Logstash
**Created:** [November 1, 2017, 9:56am UTC](https://discuss.elastic.co/t/logs-parsing/106012 "2017-11-01T09:56:35Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@paul1243](https://discuss.elastic.co/u/paul1243)
#### Post date: [November 1, 2017, 9:56am UTC](https://discuss.elastic.co/t/logs-parsing/106012/1 "2017-11-01T09:56:35Z")
Hi -
Am receiving the Build logs from the Jenkins using the Logstash plugin, and directly publishing the data to the Elastic Search.
How would I parse the out the message and pull out the required data and map it as (key-value). Could someone please let me know. Thanks !
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### Author:  [@TheNmaptomyHeartBeat](https://discuss.elastic.co/u/TheNmaptomyHeartBeat)
#### Post date: [November 1, 2017, 11:09am UTC](https://discuss.elastic.co/t/logs-parsing/106012/2 "2017-11-01T11:09:09Z")
Might need to use a Grok filter.
[https://www.elastic.co/guide/en/logstash/current/plugins-filters-grok.html](https://www.elastic.co/guide/en/logstash/current/plugins-filters-grok.html)
It allows you to extract data from a log into fields.
use the Grok Debugger to test your filters.
[https://grokdebug.herokuapp.com/](https://grokdebug.herokuapp.com/)
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 29, 2017, 11:09am UTC](https://discuss.elastic.co/t/logs-parsing/106012/3 "2017-11-29T11:09:26Z")
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