# Buffer overflow issue Flunetd not able to push logs to elasticsearch cluster

**URL:** <https://discuss.elastic.co/t/buffer-overflow-issue-flunetd-not-able-to-push-logs-to-elasticsearch-cluster/351418>\
**Category:** Logstash\
**Tags:** elastic-stack-monitoring, ilm-index-lifecycle-management\
**Created:** [January 19, 2024, 8:04am UTC](https://discuss.elastic.co/t/buffer-overflow-issue-flunetd-not-able-to-push-logs-to-elasticsearch-cluster/351418 "2024-01-19T08:04:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Music\_World](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/music_world/32/122338_2.png) [@Music\_World](https://discuss.elastic.co/u/Music_World)\
**Post date:** [January 19, 2024, 8:04am UTC](https://discuss.elastic.co/t/buffer-overflow-issue-flunetd-not-able-to-push-logs-to-elasticsearch-cluster/351418/1 "2024-01-19T08:04:30Z")

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Hi @all  
I am using elasticsearch version: 7.16.2 and fluentd version: 1.14.4 on aws eks cluster and it's throwing bufferoverflow error like  
failed to flush the buffer. retry\_times=0 next\_retry\_time=2024-01-19 07:43:43 +0000 chunk="60f428e5b5afa3f00a2c579591a1d111" error\_class=Fluent::Plugin::ElasticsearchOutput::RecoverableRequestFailure error="could not push logs to Elasticsearch cluster

So could anyone help me here to resolve this issue?  
Note: I have already tried increasing chunk size and other buffer configuration and i am using file based buffer configuration.

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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:** [February 16, 2024, 8:05am UTC](https://discuss.elastic.co/t/buffer-overflow-issue-flunetd-not-able-to-push-logs-to-elasticsearch-cluster/351418/2 "2024-02-16T08:05:17Z")

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