# After Create My ES cluster included only 3 nodes each of nodes is "master and data node" , when trying to check cluster health using "9200/\_cluster/health?pretty'" getting an error

**URL:** <https://discuss.elastic.co/t/after-create-my-es-cluster-included-only-3-nodes-each-of-nodes-is-master-and-data-node-when-trying-to-check-cluster-health-using-9200-cluster-health-pretty-getting-an-error/163528>\
**Category:** Elasticsearch\
**Created:** [January 9, 2019, 12:35pm UTC](https://discuss.elastic.co/t/after-create-my-es-cluster-included-only-3-nodes-each-of-nodes-is-master-and-data-node-when-trying-to-check-cluster-health-using-9200-cluster-health-pretty-getting-an-error/163528 "2019-01-09T12:35:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![m\_5amy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/m_5amy/32/32662_2.png) [@m\_5amy](https://discuss.elastic.co/u/m_5amy)\
**Post date:** [January 9, 2019, 12:35pm UTC](https://discuss.elastic.co/t/after-create-my-es-cluster-included-only-3-nodes-each-of-nodes-is-master-and-data-node-when-trying-to-check-cluster-health-using-9200-cluster-health-pretty-getting-an-error/163528/1 "2019-01-09T12:35:12Z")

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This is the error returned after check cluster health

```auto
{
  "error" : {
    "root_cause" : [
      {
        "type" : "master_not_discovered_exception",
        "reason" : null
      }
    ],
    "type" : "master_not_discovered_exception",
    "reason" : null
  },
  "status" : 503
}

```

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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:** [February 6, 2019, 12:35pm UTC](https://discuss.elastic.co/t/after-create-my-es-cluster-included-only-3-nodes-each-of-nodes-is-master-and-data-node-when-trying-to-check-cluster-health-using-9200-cluster-health-pretty-getting-an-error/163528/2 "2019-02-06T12:35:20Z")

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