# Strang things happened when logstash grok the log message

**URL:** https://discuss.elastic.co/t/strang-things-happened-when-logstash-grok-the-log-message/69529
**Category:** Logstash
**Created:** [December 20, 2016, 6:57am UTC](https://discuss.elastic.co/t/strang-things-happened-when-logstash-grok-the-log-message/69529 "2016-12-20T06:57:30Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![guyboertje](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/guyboertje/32/31592_2.png) [@guyboertje](https://discuss.elastic.co/u/guyboertje)
#### Post date: [December 20, 2016, 4:23pm UTC](https://discuss.elastic.co/t/strang-things-happened-when-logstash-grok-the-log-message/69529/5 "2016-12-20T16:23:57Z")

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Do we presume you are using the Filebeat config from [here](https://discuss.elastic.co/t/problem-with-logstash-handling-the-mysql-slow-log/69531)

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