# ES cluster restart, any impact on Logstash output?

**URL:** <https://discuss.elastic.co/t/es-cluster-restart-any-impact-on-logstash-output/196767>\
**Category:** Logstash\
**Created:** [August 26, 2019, 12:27pm UTC](https://discuss.elastic.co/t/es-cluster-restart-any-impact-on-logstash-output/196767 "2019-08-26T12:27:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sunilmchaudhari](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sunilmchaudhari/32/9475_2.png) [@sunilmchaudhari](https://discuss.elastic.co/u/sunilmchaudhari)\
**Post date:** [August 26, 2019, 12:27pm UTC](https://discuss.elastic.co/t/es-cluster-restart-any-impact-on-logstash-output/196767/1 "2019-08-26T12:27:58Z")

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Hello,  
We need to restart ES cluster (node by node) due to some changes.  
Our concenr is to know whether it will have any impact on LS.  
We have mentioned ES-output to logstash using hosts uri.

[https://www.elastic.co/guide/en/logstash/6.3/plugins-outputs-elasticsearch.html#plugins-outputs-elasticsearch-hosts](https://www.elastic.co/guide/en/logstash/6.3/plugins-outputs-elasticsearch.html#plugins-outputs-elasticsearch-hosts)

It is said that it will load balance the array of elastic hosts.  
Please clarify whether it will be OK to restart ES cluster without stopping Logstash?

regards,  
Sunil.

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<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:** [September 23, 2019, 12:27pm UTC](https://discuss.elastic.co/t/es-cluster-restart-any-impact-on-logstash-output/196767/2 "2019-09-23T12:27:59Z")

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