# Coordinator node linked to Ingest node

**URL:** <https://discuss.elastic.co/t/coordinator-node-linked-to-ingest-node/150715>\
**Category:** Elasticsearch\
**Created:** [October 2, 2018, 1:30pm UTC](https://discuss.elastic.co/t/coordinator-node-linked-to-ingest-node/150715 "2018-10-02T13:30:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gourmax-geo](https://avatars.discourse-cdn.com/v4/letter/g/54ee81/32.png) [@gourmax-geo](https://discuss.elastic.co/u/gourmax-geo)\
**Post date:** [October 2, 2018, 1:30pm UTC](https://discuss.elastic.co/t/coordinator-node-linked-to-ingest-node/150715/1 "2018-10-02T13:30:13Z")

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I'm developing an elasticsearch cluster for a "search" use-case with small real-time ingestion of time series.  
Here is my scheduled cluster:

- 3 master-eligible nodes
- 3 data nodes
- 1 ingest node
- 1 coordinator only node

What I would like to know is, how to connect CRUD request to my ES Cluster ? Does the coordinator only will be the only link to user ? For "create", the coordinator will drive my data directly to the ingest node before storage ?  
Or should I make difference between writing operations and searching operations (respectively ingest and coordinator) ?

Regards,  
Maxime

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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 30, 2018, 1:30pm UTC](https://discuss.elastic.co/t/coordinator-node-linked-to-ingest-node/150715/2 "2018-10-30T13:30:13Z")

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