# Data loss in elasticsearch after restart

**URL:** <https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192>\
**Category:** Elasticsearch\
**Created:** [June 8, 2016, 10:12am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192 "2016-06-08T10:12:00Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![sgnagarajan](https://avatars.discourse-cdn.com/v4/letter/s/e9a140/32.png) [@sgnagarajan](https://discuss.elastic.co/u/sgnagarajan)\
**Post date:** [June 8, 2016, 10:12am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/1 "2016-06-08T10:12:00Z")

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Data is getting vanish whenever restart elasticsearch, using default configurations on elasticsearch.yaml

Need help on this, to avoid this issue.

elasticsearch version 1.6.0

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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:** [June 8, 2016, 10:15am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/2 "2016-06-08T10:15:42Z")

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> [@sgnagarajan](#):
>
> elasticsearch version 1.6.0

> [@sgnagarajan](#):
>
> Need help on this, to avoid this issue.

Upgrade for starters.

Otherwise, please provide more information on what you are seeing.

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**Author:** ![sgnagarajan](https://avatars.discourse-cdn.com/v4/letter/s/e9a140/32.png) [@sgnagarajan](https://discuss.elastic.co/u/sgnagarajan)\
**Post date:** [June 8, 2016, 12:36pm UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/3 "2016-06-08T12:36:25Z")

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When we restart the elasticsearch after modify on the elasticsearch.yaml file, we are not seeing any data on this elasticsearch.

Need help on this.

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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:** [June 8, 2016, 9:28pm UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/4 "2016-06-08T21:28:34Z")

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So what are you changing?

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**Author:** ![JoarSvensson](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/joarsvensson/32/8740_2.png) [@JoarSvensson](https://discuss.elastic.co/u/JoarSvensson)\
**Post date:** [June 9, 2016, 8:44am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/5 "2016-06-09T08:44:36Z")

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If you change the cluster name in the configuration file, the newly created cluster will not contain any old indices.

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<div class="post-metadata">

**Author:** ![sgnagarajan](https://avatars.discourse-cdn.com/v4/letter/s/e9a140/32.png) [@sgnagarajan](https://discuss.elastic.co/u/sgnagarajan)\
**Post date:** [June 9, 2016, 9:36am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/6 "2016-06-09T09:36:45Z")

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Hi Joar,

Thanks for the update.

Not changing the clustername, changing the heap mem size in "[elasticsearch.in.sh](http://elasticsearch.in.sh)" and restarting elasticsearch.

Then if we see the data on it, its not showing any docs.

This is happening every time.

Please suggest, how avoid this data loss when we restart elasticsearch.

Thanks,  
Nagarajan

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [June 9, 2016, 10:38am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/7 "2016-06-09T10:38:27Z")

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Check the ES logs for clues.

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**Author:** ![JoarSvensson](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/joarsvensson/32/8740_2.png) [@JoarSvensson](https://discuss.elastic.co/u/JoarSvensson)\
**Post date:** [June 20, 2016, 9:37am UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/8 "2016-06-20T09:37:04Z")

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It seems strange.. perhaps you have altered the default data folder location? Is it being wiped by the OS or another application?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:42pm UTC](https://discuss.elastic.co/t/data-loss-in-elasticsearch-after-restart/52192/9 "2017-07-05T22:42:22Z")

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