# Setting number\_of\_shards but couldn't resolve host

**URL:** <https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399>\
**Category:** Elasticsearch\
**Created:** [September 5, 2017, 10:23am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399 "2017-09-05T10:23:21Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![saliormoon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saliormoon/32/21499_2.png) [@saliormoon](https://discuss.elastic.co/u/saliormoon)\
**Post date:** [September 5, 2017, 10:23am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/1 "2017-09-05T10:23:21Z")

</div>

when I set the shards number, it throws such problem:  
curl -XPUT 'l0.62.179.32:9200/my\_index/pretty' -H 'Content-Type: application/json' -d'  
{  
"settings": {  
"number\_of\_shards" : 2,  
"number\_of\_replicas" : 0  
}  
}  
'  
curl: (6) Couldn't resolve host 'l0.62.179.32'

Could anyone give me some advice?

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 5, 2017, 10:25am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/2 "2017-09-05T10:25:37Z")

</div>

Is the first character in the IP address a digit? It does not look like a `1`.

---

<div class="post-metadata">

**Author:** ![saliormoon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saliormoon/32/21499_2.png) [@saliormoon](https://discuss.elastic.co/u/saliormoon)\
**Post date:** [September 5, 2017, 10:28am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/3 "2017-09-05T10:28:38Z")

</div>

Oh, Yeah. You are so smart. Thanks a lot.

---

<div class="post-metadata">

**Author:** ![saliormoon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saliormoon/32/21499_2.png) [@saliormoon](https://discuss.elastic.co/u/saliormoon)\
**Post date:** [September 5, 2017, 10:31am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/4 "2017-09-05T10:31:26Z")

</div>

But it still has the problem like this:  
SZX1000355659:/home/2:9200/my\_index/\_settings?pretty' -H 'Content-Type: application/json' -d'

> {  
> "number\_of\_shards" : 2,  
> "number\_of\_replicas" : 0  
> }'  
> {  
> "error" : {  
> "root\_cause" : [  
> {  
> "type" : "remote\_transport\_exception",  
> "reason" : "[node-3][10.62.183.178:9302][indices:admin/settings/update]"  
> }  
> ],  
> "type" : "illegal\_argument\_exception",  
> "reason" : "Can't update non dynamic settings [[index.number\_of\_shards]] for open indices [[my\_index/QF5ARy2VQ6G0t8BzZEI86g]]"  
> },  
> "status" : 400  
> }

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 5, 2017, 10:37am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/5 "2017-09-05T10:37:44Z")

</div>

Once an index has been created, you can not change the number of shards, only the number of replicas.

---

<div class="post-metadata">

**Author:** ![saliormoon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saliormoon/32/21499_2.png) [@saliormoon](https://discuss.elastic.co/u/saliormoon)\
**Post date:** [September 5, 2017, 10:39am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/6 "2017-09-05T10:39:10Z")

</div>

Thanks. If so, how we scale out the storage of primary shards?

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 5, 2017, 10:47am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/7 "2017-09-05T10:47:45Z")

</div>

Let us keep this discussion to your other thread: [How does the elasticsearch expand capacity and shrink capacity？](https://discuss.elastic.co/t/how-does-the-elasticsearch-expand-capacity-and-shrink-capacity/99396/10)

---

<div class="post-metadata">

**Author:** ![saliormoon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saliormoon/32/21499_2.png) [@saliormoon](https://discuss.elastic.co/u/saliormoon)\
**Post date:** [September 5, 2017, 10:53am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/8 "2017-09-05T10:53:22Z")

</div>

Ok, thanks a lot.

---

<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:** [October 3, 2017, 10:53am UTC](https://discuss.elastic.co/t/setting-number-of-shards-but-couldnt-resolve-host/99399/9 "2017-10-03T10:53:41Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.