# Indexer Failures NEW

**URL:** <https://community.graylog.org/t/indexer-failures-new/10502>\
**Category:** Graylog Central (peer support)\
**Created:** [May 20, 2019, 7:49am UTC](https://community.graylog.org/t/indexer-failures-new/10502 "2019-05-20T07:49:05Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![jan](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jan/32/11_2.png) [@jan](https://community.graylog.org/u/jan)\
**Post date:** [May 21, 2019, 5:47am UTC](https://community.graylog.org/t/indexer-failures-new/10502/4 "2019-05-21T05:47:16Z")

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There is no additional link with a copy&paste howto - at least I did not know any.

You need to delete some indices to free up space: [https://www.elastic.co/guide/en/elasticsearch/reference/6.7/indices-delete-index.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.7/indices-delete-index.html)

After that configure your data retention and rotation in Graylog that it fits your available disk space or time you want to data to be persistent. Remember that for the second one you need the amount of disk space for that. [https://docs.graylog.org/en/stable/pages/configuration/index\_model.html#index-set-configuration](https://docs.graylog.org/en/stable/pages/configuration/index_model.html#index-set-configuration)

If that is done, make your indices read-write again:

```auto
 curl -XPUT -H "Content-Type: application/json" https://localhost:9200/_all/_settings -d '{"index.blocks.read_only_allow_delete": null}'

```

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