# \[Solved\] \[Logstash\] Elasticsearch output plugin question

**URL:** <https://discuss.elastic.co/t/solved-logstash-elasticsearch-output-plugin-question/43390>\
**Category:** Logstash\
**Created:** [March 3, 2016, 1:35pm UTC](https://discuss.elastic.co/t/solved-logstash-elasticsearch-output-plugin-question/43390 "2016-03-03T13:35:38Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![axelfelix](https://avatars.discourse-cdn.com/v4/letter/a/5fc32e/32.png) [@axelfelix](https://discuss.elastic.co/u/axelfelix)\
**Post date:** [March 3, 2016, 1:35pm UTC](https://discuss.elastic.co/t/solved-logstash-elasticsearch-output-plugin-question/43390/1 "2016-03-03T13:35:38Z")

</div>

Hi all,

I'm new here, so hello to everybody !!!

I have a question regarding the elasticsearch output plugin.

When I set the index, what is the base of the macro **%{+YYYY.MM.dd}**?  
`index => "logstash-%{+YYYY.MM.dd}"`

This is the local time, or it's from the @timestamp field or something else ?

Thanks in advance.

Alex

---

<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:** [March 3, 2016, 1:40pm UTC](https://discuss.elastic.co/t/solved-logstash-elasticsearch-output-plugin-question/43390/2 "2016-03-03T13:40:37Z")

</div>

It's from the `@timestamp` field. See [https://www.elastic.co/guide/en/logstash/current/event-dependent-configuration.html#sprintf](https://www.elastic.co/guide/en/logstash/current/event-dependent-configuration.html#sprintf).

---

<div class="post-metadata">

**Author:** ![axelfelix](https://avatars.discourse-cdn.com/v4/letter/a/5fc32e/32.png) [@axelfelix](https://discuss.elastic.co/u/axelfelix)\
**Post date:** [March 3, 2016, 2:07pm UTC](https://discuss.elastic.co/t/solved-logstash-elasticsearch-output-plugin-question/43390/3 "2016-03-03T14:07:17Z")

</div>

Thanks a lot for you **quick** answer !

It's very helpful.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 5:08am UTC](https://discuss.elastic.co/t/solved-logstash-elasticsearch-output-plugin-question/43390/4 "2017-07-06T05:08:31Z")

</div>