# Log Format

**URL:** <https://discuss.elastic.co/t/log-format/67096>\
**Category:** Elasticsearch\
**Created:** [November 24, 2016, 11:12am UTC](https://discuss.elastic.co/t/log-format/67096 "2016-11-24T11:12:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![phil.ireland](https://avatars.discourse-cdn.com/v4/letter/p/3da27b/32.png) [@phil.ireland](https://discuss.elastic.co/u/phil.ireland)\
**Post date:** [November 24, 2016, 11:12am UTC](https://discuss.elastic.co/t/log-format/67096/1 "2016-11-24T11:12:15Z")

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We create a new index the 1st of every month. Index example logstash-xx-xx-xx-%{+[YYYY.MM](http://YYYY.MM)}  
I have been told the first log format it recieves sets the format for that index and all logs that dont match are dropped.

Is this true

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 24, 2016, 11:25am UTC](https://discuss.elastic.co/t/log-format/67096/2 "2016-11-24T11:25:23Z")

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Yes it is.

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**Author:** ![phil.ireland](https://avatars.discourse-cdn.com/v4/letter/p/3da27b/32.png) [@phil.ireland](https://discuss.elastic.co/u/phil.ireland)\
**Post date:** [November 24, 2016, 11:36am UTC](https://discuss.elastic.co/t/log-format/67096/3 "2016-11-24T11:36:30Z")

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Is there a way round this. At the moment i create a new index

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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:** [December 22, 2016, 11:37am UTC](https://discuss.elastic.co/t/log-format/67096/4 "2016-12-22T11:37:24Z")

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Closed on December 22, 2016, 11:37am UTC

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