# ES disconected while running on EC2

**URL:** <https://discuss.elastic.co/t/es-disconected-while-running-on-ec2/12034>\
**Category:** Elasticsearch\
**Created:** [May 20, 2013, 7:17am UTC](https://discuss.elastic.co/t/es-disconected-while-running-on-ec2/12034 "2013-05-20T07:17:52Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![tien\_nguyenmanh](https://avatars.discourse-cdn.com/v4/letter/t/a5b964/32.png) [@tien\_nguyenmanh](https://discuss.elastic.co/u/tien_nguyenmanh)\
**Post date:** [May 20, 2013, 7:17am UTC](https://discuss.elastic.co/t/es-disconected-while-running-on-ec2/12034/1 "2013-05-20T07:17:52Z")

</div>

Hi,

I setup 3 ES instances on EC2 using 3 small instances: instance1,  
instance2, instance3  
Loaded 70 docs into it.  
I notice that while i was running search test or indexing data 1 or 2  
instances were disconnected from cluster  
I don't know why it disconnected? please advice me what to do to prevent  
this problem.

Here are log when 1 instance disconnect.  
in INSTANCE3:  
2013-05-19 23:48:15,363][DEBUG][action.admin.indices.stats] [instance3]  
[nndex1][1], node[rc3l-dm0Ra-UTYyXM4DG8A], [P], s[STARTED]: Failed to  
execute  
[org.elasticsearch.action.admin.indices.stats.IndicesStatsRequest@5ab8c80a]  
[2013-05-19 23:48:15,411][INFO][cluster.service] [instance2]  
removed  
{[instance2][rc3l-dm0Ra-UTYyXM4DG8A][inet[/IP2:9300]]{master=true},},  
reason:  
zen-disco-node\_failed([instance2][rc3l-dm0Ra-UTYyXM4DG8A][inet[/IP2:9300]]{master=true}),  
reason transport disconnected (with verified connect)

in INSTANCE2:  
[2013-05-19 23:48:01,698][INFO][cluster.service] [instance2]  
master {new  
[instance1][px2Qw0UVTLSZvj-YVNFZaQ][inet[/IP1:9300]]{master=true}, previous  
[instace3][mnJ2oA02R0-Hzsr\_RmxWpQ][inet[/ip3:9300]]{master=true}}, removed  
{[instance3][mnJ2oA02R0-Hzsr\_RmxWpQ][inet[/IP3:9300]]{master=true},},  
reason: zen-disco-receive(from master  
[[instance1][px2Qw0UVTLSZvj-YVNFZaQ][inet[/IP1:9300]]{master=true}])

in INSTANCE1:  
[2013-05-19 23:48:01,558][INFO][discovery.zen] [instance1]  
master\_left  
[[instance3][mnJ2oA02R0-Hzsr\_RmxWpQ][inet[/IP3:9300]]{master=true}], reason  
[do not exists on master, act as master failure]  
[2013-05-19 23:48:01,565][INFO][cluster.service] [instance1]  
master {new  
[instance1][px2Qw0UVTLSZvj-YVNFZaQ][inet[/IP1:9300]]{master=true}, previous  
[instance3][mnJ2oA02R0-Hzsr\_RmxWpQ][inet[/IP3:9300]]{master=true}}, removed  
{[instance3][mnJ2oA02R0-Hzsr\_RmxWpQ][inet[/IP#:9300]]{master=true},},  
reason: zen-disco-master\_failed  
([instance3][mnJ2oA02R0-Hzsr\_RmxWpQ][inet[/IP3:9300]]{master=true})

--  
You received this message because you are subscribed to the Google Groups "elasticsearch" group.  
To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).  
For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out).

---

<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:** [July 6, 2017, 2:35am UTC](https://discuss.elastic.co/t/es-disconected-while-running-on-ec2/12034/2 "2017-07-06T02:35:46Z")

</div>