# Unicast Discovery

**URL:** <https://discuss.elastic.co/t/unicast-discovery/13388>\
**Category:** Elasticsearch\
**Created:** [August 29, 2013, 9:11am UTC](https://discuss.elastic.co/t/unicast-discovery/13388 "2013-08-29T09:11:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ranjith\_Venkatesan](https://avatars.discourse-cdn.com/v4/letter/r/47e85d/32.png) [@Ranjith\_Venkatesan](https://discuss.elastic.co/u/Ranjith_Venkatesan)\
**Post date:** [August 29, 2013, 9:11am UTC](https://discuss.elastic.co/t/unicast-discovery/13388/1 "2013-08-29T09:11:33Z")

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Hi

I am new to Elastic search. I am using ElasticSearch-0.90.3 for my search application. I am having 20 nodes in my cluster with _multicast disabled and unicast enabled_ by giving all 20 machine's IP in "discovery.zen.ping.unicast.hosts".

Suppose in near future i want to add new node to the cluster. In such a case how to add the new node's IP to old 20 nodes? Is there any API available for this?? else how to overcome this situation..

Thanks in advance

Ranjith Venkatesan

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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:** [July 6, 2017, 2:19am UTC](https://discuss.elastic.co/t/unicast-discovery/13388/2 "2017-07-06T02:19:04Z")

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