# How does Logstash keep track of Winlogbeat events?

**URL:** <https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426>\
**Category:** Logstash\
**Created:** [September 13, 2017, 10:29pm UTC](https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426 "2017-09-13T22:29:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![amruth](https://avatars.discourse-cdn.com/v4/letter/a/43a26b/32.png) [@amruth](https://discuss.elastic.co/u/amruth)\
**Post date:** [September 13, 2017, 10:29pm UTC](https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426/1 "2017-09-13T22:29:40Z")

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Hi,  
I am trying to use winlogbeat and Logstash. How does Logstash keep track of winlogbeat events if Logstash is restarted?  
Thanks

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [September 14, 2017, 7:28am UTC](https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426/2 "2017-09-14T07:28:02Z")

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It doesn't. It's Winlogbeat that makes sure events aren't resent.

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**Author:** ![amruth](https://avatars.discourse-cdn.com/v4/letter/a/43a26b/32.png) [@amruth](https://discuss.elastic.co/u/amruth)\
**Post date:** [September 14, 2017, 5:18pm UTC](https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426/3 "2017-09-14T17:18:20Z")

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Thanks Magnus. What if I want to migrate from running Logstash from command line to Running Logstash as a service?

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [September 14, 2017, 6:09pm UTC](https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426/4 "2017-09-14T18:09:53Z")

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Why would that be a problem?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 12, 2017, 6:10pm UTC](https://discuss.elastic.co/t/how-does-logstash-keep-track-of-winlogbeat-events/100426/5 "2017-10-12T18:10:28Z")

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