# How does elasticsearch create "node id"?

**URL:** <https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564>\
**Category:** Elasticsearch\
**Created:** [April 24, 2020, 2:26am UTC](https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564 "2020-04-24T02:26:04Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![xodn0812](https://avatars.discourse-cdn.com/v4/letter/x/c5a1d2/32.png) [@xodn0812](https://discuss.elastic.co/u/xodn0812)\
**Post date:** [April 24, 2020, 2:26am UTC](https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564/1 "2020-04-24T02:26:05Z")

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How does elasticsearch create "node id"??

It does not work properly in the following cases.  
first.  
host 1 - es-node-1  
host 2 - es-node-2  
host 3 - es-node-3  
If you kill all and change as below.  
host 1 - es-node-2  
host 2 - es-node-3  
host 3 - es-node-1

I get an error.` master not discovered or elected yet, an election requires a node with id`

Why is this?

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [April 24, 2020, 2:28am UTC](https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564/2 "2020-04-24T02:28:04Z")

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What exactly are you doing when you move the `es-node-N` to a different host?

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<div class="post-metadata">

**Author:** ![xodn0812](https://avatars.discourse-cdn.com/v4/letter/x/c5a1d2/32.png) [@xodn0812](https://discuss.elastic.co/u/xodn0812)\
**Post date:** [April 24, 2020, 4:36am UTC](https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564/3 "2020-04-24T04:36:28Z")

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It just changes the node name.

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [April 24, 2020, 4:51am UTC](https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564/4 "2020-04-24T04:51:46Z")

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Do you mean [`node.name`](https://www.elastic.co/guide/en/elasticsearch/reference/7.6/node.name.html)?

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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:** [May 22, 2020, 4:51am UTC](https://discuss.elastic.co/t/how-does-elasticsearch-create-node-id/229564/5 "2020-05-22T04:51:54Z")

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Closed on May 22, 2020, 4:51am UTC

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