# Elasticsearch service keeps failing

**URL:** <https://discuss.elastic.co/t/elasticsearch-service-keeps-failing/148048>\
**Category:** Elasticsearch\
**Created:** [September 11, 2018, 5:30am UTC](https://discuss.elastic.co/t/elasticsearch-service-keeps-failing/148048 "2018-09-11T05:30:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![manuelasticsearch](https://avatars.discourse-cdn.com/v4/letter/m/e56c9b/32.png) [@manuelasticsearch](https://discuss.elastic.co/u/manuelasticsearch)\
**Post date:** [September 11, 2018, 5:30am UTC](https://discuss.elastic.co/t/elasticsearch-service-keeps-failing/148048/1 "2018-09-11T05:30:02Z")

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Hi All,

I have implemented EFK in my environment. Kibana and Elasticsearch are installed on a separate instance and Fluentd is configured on my kubernetes cluster. Everything was working perfect. But sometimes my Elasticsearch servicec keeps failing. When I checked elasticsearch log I got following error

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[2018-09-11T03:58:59,801][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [] fatal error in thread [Thread-19], exiting  
java.lang.OutOfMemoryError: Java heap space

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My Kibana instance is having 25 GB memory. Seeking help?

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [September 11, 2018, 5:36am UTC](https://discuss.elastic.co/t/elasticsearch-service-keeps-failing/148048/2 "2018-09-11T05:36:48Z")

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> [@manuelasticsearch](#):
>
> java.lang.OutOfMemoryError: Java heap space

You're running out of heap space for some reason.

What version are you on? What OS? What JVM? How many nodes? How many shards/indices? How many GB is that?

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<div class="post-metadata">

**Author:** ![manuelasticsearch](https://avatars.discourse-cdn.com/v4/letter/m/e56c9b/32.png) [@manuelasticsearch](https://discuss.elastic.co/u/manuelasticsearch)\
**Post date:** [September 11, 2018, 6:40am UTC](https://discuss.elastic.co/t/elasticsearch-service-keeps-failing/148048/3 "2018-09-11T06:40:26Z")

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> [@warkolm](#):
>
> How many shards/indice

1)Elasticsearch verion: 6.4.0  
2)OS: Ubuntu 16.04.5  
3)JVM option: -Xms1g -Xmx1g  
4)Please let me know how can I check the node Number. In my elasticsearch.yml i do not found the number.

## 5)For indices Please find the result from below:

root@kibana-1:/etc/elasticsearch# curl 'localhost:9200/\_cat/indices?v'  
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size  
yellow open logstash-2018.08.31 L1Yqf1YGR4m0kqeudgs\_4Q 5 1 45 0 124.3kb 124.3kb  
yellow open logstash-2018.09.06 TWpq\_84\_RsK0CTGJSnsYAA 5 1 9 0 67.7kb 67.7kb  
yellow open logstash-2018.09.04 ddWM\_M\_bSWGFNh2ZAr6RRQ 5 1 13 0 69.8kb 69.8kb  
yellow open logstash-2018.08.29 ON16PQ5qQrqOwAyNLNLyFw 5 1 93 0 295.5kb 295.5kb  
green open .kibana t8OQX5PnRDSPomkws-BxBw 1 0 2 0 13.5kb 13.5kb  
yellow open logstash-2018.09.02 i62EaffxQs219A7huOWiZw 5 1 41 0 84.8kb 84.8kb  
yellow open logstash-2018.09.11 pO0U\_NXfSjS6YRDJ11BoGw 5 1 2975551 0 412.9mb 412.9mb  
yellow open logstash-2018.09.10 MMLf5kY0QuqYogmoSRmg4Q 5 1 40556237 0 8.3gb 8.3gb  
yellow open logstash-2018.08.28 AVIT2NqIQpm9HZ\_Prd759w 5 1 104 0 115kb 115kb  
yellow open logstash-2018.08.30 qShOtVXvRcGha6n8NG2-SQ 5 1 41 0 84.9kb 84.9kb  
yellow open logstash-2018.09.05 KjLglQhRSgukkhzNA5S2YA 5 1 28 0 76.7kb 76.7kb  
yellow open logstash-2018.09.01 ZAHwckWLSg-NZ8sE8PB10Q 5 1 42 0 84.9kb 84.9kb  
yellow open logstash-2018.08.24 bJ8Bf6OXRYuMGlK3OmFW4A 5 1 2198639 0 520.7mb 520.7mb  
yellow open logstash-2018.08.25 qDwDVtDnRg-L1xIFipE1Uw 5 1 604211 0 229.1mb 229.1mb  
yellow open logstash-2018.08.26 OJDPmRAJSIy0nNlDS9i9qQ 5 1 392863 0 141.8mb 141.8mb

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I have integrated my three cluster enviornment's fluentd to a single elasticsearch and a large amout of indices files are generating. Do not know whether this is the reason.

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<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 9, 2018, 6:54am UTC](https://discuss.elastic.co/t/elasticsearch-service-keeps-failing/148048/4 "2018-10-09T06:54:55Z")

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