# Elasticsearch: simple cluster. Can't change nodes. Please, help
**URL:** https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995
**Category:** Elasticsearch
**Created:** [June 9, 2014, 2:41pm UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995 "2014-06-09T14:41:25Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Dmitriy\_Kargapolov](https://discuss.elastic.co/u/Dmitriy_Kargapolov)
#### Post date: [June 9, 2014, 2:41pm UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/1 "2014-06-09T14:41:25Z")
I have a simple cluster with 2 nodes: master/data and data. I need to move
master data to another server. I tried to change master to data and data to
master, also made 3 node master. But always I had one result. Status of
cluster was green and I all shards were 0, but in home directory I had all
data. What should I do to solve this problem?
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### Author:  [@sirkubax](https://discuss.elastic.co/u/sirkubax)
#### Post date: [June 9, 2014, 2:51pm UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/2 "2014-06-09T14:51:56Z")
What this commnad show
curl -XGET '[http://localhost:9200/\_nodes/\_all/process?pretty=true](http://localhost:9200/_nodes/_all/process?pretty=true)' |less
W dniu poniedziałek, 9 czerwca 2014 16:41:25 UTC+2 użytkownik Dmitriy
Kargapolov napisał:
> I have a simple cluster with 2 nodes: master/data and data. I need to move
> master data to another server. I tried to change master to data and data to
> master, also made 3 node master. But always I had one result. Status of
> cluster was green and I all shards were 0, but in home directory I had all
> data. What should I do to solve this problem?
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### Author:  [@Dmitriy\_Kargapolov](https://discuss.elastic.co/u/Dmitriy_Kargapolov)
#### Post date: [June 10, 2014, 5:08am UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/3 "2014-06-10T05:08:16Z")
This command show:
C:\Program Files\Elasticsearch\bin\>curl -XGET
"[http://localhost:9204/\_nodes/\_all/process?pretty=true](http://localhost:9204/_nodes/_all/process?pretty=true)"
{
"ok" : true,
"cluster\_name" : "mycluster",
"nodes" : {
"RTlR2GvATs-jqYSRQ5c6bg" : {
"name" : "node4",
"transport\_address" : "inet[/192.168.0.89:9304]",
"hostname" : "V04",
"version" : "0.90.12",
"http\_address" : "inet[/192.168.0.89:9204]",
"attributes" : {
"master" : "false"
},
"process" : {
"refresh\_interval" : 1000,
"id" : 3420,
"max\_file\_descriptors" : -1,
"mlockall" : false
}
},
"BA2wkXmKTAqQlaULydDjuA" : {
"name" : "node3",
"transport\_address" : "inet[/192.168.0.173:9300]",
"hostname" : "V03",
"version" : "0.90.12",
"http\_address" : "inet[/192.168.0.173:9200]",
"attributes" : {
"master" : "true"
},
"process" : {
"refresh\_interval" : 1000,
"id" : 1148,
"max\_file\_descriptors" : -1,
"mlockall" : false
}
}
}
}
On Mon, Jun 9, 2014 at 5:51 PM, sirkubax [jakubxmuszynski@googlemail.com](mailto:jakubxmuszynski@googlemail.com) wrote:
> What this commnad show
>
> curl -XGET '[http://localhost:9200/\_nodes/\_all/process?pretty=true](http://localhost:9200/_nodes/_all/process?pretty=true)' |less
>
> W dniu poniedziałek, 9 czerwca 2014 16:41:25 UTC+2 użytkownik Dmitriy
> Kargapolov napisał:
>
> > I have a simple cluster with 2 nodes: master/data and data. I need to move
> > master data to another server. I tried to change master to data and data to
> > master, also made 3 node master. But always I had one result. Status of
> > cluster was green and I all shards were 0, but in home directory I had all
> > data. What should I do to solve this problem?
>
> --
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### Author:  [@sirkubax](https://discuss.elastic.co/u/sirkubax)
#### Post date: [June 10, 2014, 8:44am UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/4 "2014-06-10T08:44:16Z")
Try add "
"data" : "false"
to the node that you would like to remove data (you are trying to move from
node4 -\> node3 right?).
I'm not sure, but when operation succeed, data will be copied to node3,
_but_ it _as far as I know_ dhe data will stay on node, To be sure compare
folder size, and if correct, remove them manually.
The setting:
{
"ok" : true,
"cluster\_name" : "mycluster",
"nodes" : {
"RTlR2GvATs-jqYSRQ5c6bg" : {
"name" : "node4",
"transport\_address" : "inet[/192.168.0.89:9304]",
"hostname" : "V04",
"version" : "0.90.12",
"http\_address" : "inet[/192.168.0.89:9204]",
"attributes" : {
"master" : "false"
-
```
"data" : "false"*
},
"process" : {
"refresh_interval" : 1000,
"id" : 3420,
"max_file_descriptors" : -1,
"mlockall" : false
}
```
},
"BA2wkXmKTAqQlaULydDjuA" : {
"name" : "node3",
"transport\_address" : "inet[/192.168.0.173:9300]",
"hostname" : "V03",
"version" : "0.90.12",
"http\_address" : "inet[/192.168.0.173:9200]",
"attributes" : {
"master" : "true"
},
"process" : {
"refresh\_interval" : 1000,
"id" : 1148,
"max\_file\_descriptors" : -1,
"mlockall" : false
}
}
}
}
_Actually_
curl localhost:9200/\_settings?pretty |less
{
"logstash-2014.05.09" : {
"settings" : {
"index" : {
"uuid" : "D3C5kDoVRUShZbxHsY9i9A",
"analysis" : {
"analyzer" : {
"default" : {
"type" : "standard",
"stopwords" : "_none_"
}
}
},
_"number\_of\_replicas" : "1",_
"number\_of\_shards" : "5",
"refresh\_interval" : "5s",
"version" : {
"created" : "1000199"
}
}
}
},
_If you have your replica configured, it should copy to second node itself._
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### Author:  [@sirkubax](https://discuss.elastic.co/u/sirkubax)
#### Post date: [June 10, 2014, 8:45am UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/5 "2014-06-10T08:45:36Z")
_Try add ""data" : "false"_
You can do it in you elasticserh.yml
# You can exploit these settings to design advanced cluster topologies.
#
# 1. You want this node to never become a master node, only to hold data.
# This will be the "workhorse" of your cluster.
#
# node.master: false
# node.data: true
#
# 2. You want this node to only serve as a master: to not store any data and
# to have free resources. This will be the "coordinator" of your cluster.
#
# node.master: true
# node.data: false
#
# 3. You want this node to be neither master nor data node, but
# to act as a "search load balancer" (fetching data from nodes,
# aggregating results, etc.)
#
node.master: false
node.data: false
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### Author:  [@Dmitriy\_Kargapolov](https://discuss.elastic.co/u/Dmitriy_Kargapolov)
#### Post date: [June 11, 2014, 8:54am UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/6 "2014-06-11T08:54:58Z")
Thanks for answering me. But all works now! I made all necessary
operations very slowly and carefully with full restart of servers. And
all work properly. I am really don't understand what the matter was.
Maybe I should to restart some service or process besides
elasticsearch service to make changes. I don't know.
On Tue, Jun 10, 2014 at 11:45 AM, sirkubax
[jakubxmuszynski@googlemail.com](mailto:jakubxmuszynski@googlemail.com) wrote:
> Try add "
> "data" : "false"
>
> You can do it in you elasticserh.yml
>
> # You can exploit these settings to design advanced cluster topologies.
>
> #
>
> # 1. You want this node to never become a master node, only to hold data.
>
> # This will be the "workhorse" of your cluster.
>
> #
>
> # node.master: false
>
> # node.data: true
>
> #
>
> # 2. You want this node to only serve as a master: to not store any data and
>
> # to have free resources. This will be the "coordinator" of your cluster.
>
> #
>
> # node.master: true
>
> # node.data: false
>
> #
>
> # 3. You want this node to be neither master nor data node, but
>
> # to act as a "search load balancer" (fetching data from nodes,
>
> # aggregating results, etc.)
>
> #
>
> node.master: false
> node.data: false
>
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:23am UTC](https://discuss.elastic.co/t/elasticsearch-simple-cluster-cant-change-nodes-please-help/17995/7 "2017-07-06T01:23:24Z")