# Adding seconde node
**URL:** https://discuss.elastic.co/t/adding-seconde-node/141117
**Category:** Elasticsearch
**Created:** [July 23, 2018, 9:04am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117 "2018-07-23T09:04:55Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@kimfut](https://discuss.elastic.co/u/kimfut)
#### Post date: [July 23, 2018, 9:04am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/1 "2018-07-23T09:04:55Z")
hello everyone ,
i would like to know , what are benefits to added a second elasticsearch node (beside that make elasticsearch in green state ), and how to proceed via docker-compose (i installed elk stack via docker) ?
thank you in advance
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [July 23, 2018, 9:16am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/2 "2018-07-23T09:16:15Z")
On the same physical machine? I think it does make a lot of sense to add a new one.
If you just want to have a green cluster with one single node, just change the number of replica shards to 0 in your index settings.
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### Author:  [@kimfut](https://discuss.elastic.co/u/kimfut)
#### Post date: [July 23, 2018, 9:23am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/3 "2018-07-23T09:23:32Z")
thank you for your response
yes it's for the same physical machine , i am asking if when we added a second node (by the way each node do an job ,like an multithreading code ) that increase performance .
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [July 23, 2018, 9:53am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/4 "2018-07-23T09:53:01Z")
On the same physical machine? I think it will most likely degrade the performance but you have to test it.
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### Author:  [@kimfut](https://discuss.elastic.co/u/kimfut)
#### Post date: [July 23, 2018, 10:25am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/5 "2018-07-23T10:25:08Z")
i tried to make number of replica "0" with this command :
curl -XPUT 'localhost:9200/my\_index/\_settings' -d '{
"index.number\_of\_replicas" : 0
}'
it doesn't work with this error message :
{"error":"Content-Type header [application/x-www-form-urlencoded] is not supported","status":406}
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [July 23, 2018, 10:56am UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/6 "2018-07-23T10:56:35Z")
You need to pass the json content type. Like:
```auto
curl -XPUT 'localhost:9200/my_index/_settings' -H 'Content-Type: application/json' -d'{
"index.number_of_replicas" : 0
}'
```
---
### Author:  [@kimfut](https://discuss.elastic.co/u/kimfut)
#### Post date: [July 23, 2018, 2:26pm UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/7 "2018-07-23T14:26:12Z")
thank you , it works
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 20, 2018, 2:26pm UTC](https://discuss.elastic.co/t/adding-seconde-node/141117/8 "2018-08-20T14:26:14Z")
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