# Which node handle my request?

**URL:** <https://discuss.elastic.co/t/which-node-handle-my-request/181969>\
**Category:** Elasticsearch\
**Created:** [May 21, 2019, 10:00am UTC](https://discuss.elastic.co/t/which-node-handle-my-request/181969 "2019-05-21T10:00:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mor](https://avatars.discourse-cdn.com/v4/letter/m/edb3f5/32.png) [@Mor](https://discuss.elastic.co/u/Mor)\
**Post date:** [May 21, 2019, 10:00am UTC](https://discuss.elastic.co/t/which-node-handle-my-request/181969/1 "2019-05-21T10:00:43Z")

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Hi,

I have a cluster with ~20 ES data nodes and 3 masters and want to add coordinator nodes.  
I understand the technique of _how_ to add those nodes, but in order to make sure my app is working correctly (and not calling directly to data nodes f.e), i want to add logs to understand which nodes actually get my requests.

f.e - in my app, I want to make sure that _writing_ to elastic goes to data nodes, while _reading_ from elastic will be done via coordinators.

Is there a way to see which node perform the work? which log \ lines I should look for?  
(WIll not be used in production, so I don't care if I have many log lines)

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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:** [June 18, 2019, 10:00am UTC](https://discuss.elastic.co/t/which-node-handle-my-request/181969/2 "2019-06-18T10:00:43Z")

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