# Elastic search node able to join the master cluster **URL:** \ **Category:** Elasticsearch\ **Created:** [July 10, 2019, 5:53am UTC](https://discuss.elastic.co/t/elastic-search-node-able-to-join-the-master-cluster/189658 "2019-07-10T05:53:58Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![manu4387](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@manu4387](https://discuss.elastic.co/u/manu4387)\ **Post date:** [July 10, 2019, 5:53am UTC](https://discuss.elastic.co/t/elastic-search-node-able-to-join-the-master-cluster/189658/1 "2019-07-10T05:53:59Z")
Hi, I have 3 cluster node out of which one is as a coordinator node with master as false and data as false. 1 and 2 are both master and data node and they work fine in cluster with minimum master node set as 1. When I am trying to add 3 node in cluster as a coordinator node it is not adding into the cluster and error logs gives failed to communicate to the master node. I am using 6.8.0 version. Port is default 9200 Network host on all the 3 server is 0.0.0.0 Tried reboot of all the node not helped. Please suggest ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 7, 2019, 5:54am UTC](https://discuss.elastic.co/t/elastic-search-node-able-to-join-the-master-cluster/189658/2 "2019-08-07T05:54:03Z")
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