# Error while creating cluster **URL:** \ **Category:** Elasticsearch\ **Created:** [August 2, 2019, 10:32am UTC](https://discuss.elastic.co/t/error-while-creating-cluster/193504 "2019-08-02T10:32:40Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![pathri](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pathri/32/54484_2.png) [@pathri](https://discuss.elastic.co/u/pathri)\ **Post date:** [August 2, 2019, 10:32am UTC](https://discuss.elastic.co/t/error-while-creating-cluster/193504/1 "2019-08-02T10:32:40Z")
i need to create a cluster of 3 node on AWS but getting below error. "type" : "master\_not\_discovered\_exception". i am using elasticsearch as a service Please help in resolving the same. i am creating all 3 as master & data node es service is running fine on all the nodes individual. ---
**Author:** ![YKNFS](https://avatars.discourse-cdn.com/v4/letter/y/eb9ed0/32.png) [@YKNFS](https://discuss.elastic.co/u/YKNFS)\ **Post date:** [August 2, 2019, 3:40pm UTC](https://discuss.elastic.co/t/error-while-creating-cluster/193504/2 "2019-08-02T15:40:26Z")
I think a full stack trace of your exception might be helpful here, along with some more context. It sounds like you're using AWS's managed Elasticsearch service, in which case this might be a better question for AWS support. If you're running this on EC2 nodes then some more information about your configuration would be useful. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 30, 2019, 3:40pm UTC](https://discuss.elastic.co/t/error-while-creating-cluster/193504/3 "2019-08-30T15:40:28Z")
Closed on August 30, 2019, 3:40pm UTC This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.