# Clustering with Elasticsearch issues
**URL:** https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327
**Category:** Elasticsearch
**Created:** [April 25, 2016, 1:44pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327 "2016-04-25T13:44:46Z")
**Posts on this page:** 14
**Page:** 1
### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 25, 2016, 1:44pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/1 "2016-04-25T13:44:46Z")
Hi,
Think I'm going crazy with this,
Using the latest stable release of Elasticsearch and testing the cluster-function on ubuntu 14.04. They only joins if using:
network.host
discovery.zen.ping.unicast.hosts
With 3 VM, I cannot add the line node.master/data, elasticsearch fails to start if I try. Been reading through the docs but cannot see the problem.
If anyone may have a hint, guidence is gold now.
Regards
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### Author:  [@Bruce\_Ritchie](https://discuss.elastic.co/u/Bruce_Ritchie)
#### Post date: [April 25, 2016, 1:54pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/2 "2016-04-25T13:54:35Z")
What error are you receiving?
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### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 25, 2016, 5:57pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/3 "2016-04-25T17:57:50Z")
Nothing actually, dont know if I can find more logs but when starting the service, only [fail].
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### Author:  [@imabob](https://discuss.elastic.co/u/imabob)
#### Post date: [April 25, 2016, 6:15pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/4 "2016-04-25T18:15:09Z")
What does your config file look like? Config issues can prevent ES from starting up.
Finding the log file will most likely give some additional information. The default location is /var/log/elasticsearch.
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### Author:  [@pickypg](https://discuss.elastic.co/u/pickypg)
#### Post date: [April 25, 2016, 6:58pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/5 "2016-04-25T18:58:29Z")
> They only joins if using:
> `network.host`
> `discovery.zen.ping.unicast.hosts`
Starting with ES 2.0, Elasticsearch only binds to localhost by default and therefore it will _never_ be part of another machine's cluster by default. As such, it makes sense that you need to specify both the actual host address (which is assumed as the `network.bind_host` and `network.publish_host` settings).
> With 3 VM, I cannot add the line node.master/data, elasticsearch fails to start if I try. Been reading through the docs but cannot see the problem.
This doesn't make much sense to me. Can you elaborate on _exactly_ what you are doing?
Thanks
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### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 25, 2016, 7:25pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/6 "2016-04-25T19:25:04Z")
After learning ELK with elasticsearch 1.2 (think it was) it makes sense to avoid joining cluster after firing it up.
To refrase, I'm trying to create a master only node (and client later). Im thinking of maybe not enough data nodes or something, or define minimum elig master nodes.
The way from docs, add node.master in a cluster but elasticsearch wont start. I type node.data and node.master as true, still wont start.
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [April 25, 2016, 11:16pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/7 "2016-04-25T23:16:10Z")
If you can provide your config then we can probably help
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### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 26, 2016, 7:03am UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/8 "2016-04-26T07:03:34Z")
Sorry,
The only active lines it the elasticsearch.yml is:
[cluster.name](http://cluster.name): zion
network.host: 192.168.1.253
discovery.zen.ping.unicast.hosts: ["192.168.1.250", "192.168.1.251"]
As soon as I add the line
node.master: true
It is not possible to start elasticsearch service.
Or if I add
node.data: false
node.master: false
or any other combination from the docs for 2.3.X version.
Regards
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [April 26, 2016, 7:07am UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/9 "2016-04-26T07:07:08Z")
What shows in the logs if you add that?
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### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 26, 2016, 8:04am UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/10 "2016-04-26T08:04:41Z")
Nothing, if I'm not missing anything.
Added log\_daemon\_msg to the init.d/elasticsearch, no more output than before [fail]
Looking /var/log/elasticsearch, nothing.
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### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 28, 2016, 4:07pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/11 "2016-04-28T16:07:08Z")
My fellow users, no one with a finger pointing for tip/guidence?
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [April 30, 2016, 1:27am UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/12 "2016-04-30T01:27:14Z")
It still sounds like a config issue, yaml is sensitive to spaces for eg.
Post your entire config, but make sure you format it in your post using the `` button.
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### Author:  [@ProjAlpha](https://discuss.elastic.co/u/ProjAlpha)
#### Post date: [April 30, 2016, 7:26pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/13 "2016-04-30T19:26:37Z")
Mark, that's it 🙂
It was the 'space' that caused the problem.
Thank you very much and hopefully I may return the favor someday.
Regards
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 10:55pm UTC](https://discuss.elastic.co/t/clustering-with-elasticsearch-issues/48327/14 "2017-07-05T22:55:03Z")