# Logstash warning

**URL:** <https://discuss.elastic.co/t/logstash-warning/265416>\
**Category:** Logstash\
**Created:** [February 24, 2021, 10:08pm UTC](https://discuss.elastic.co/t/logstash-warning/265416 "2021-02-24T22:08:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![elasticforme](https://avatars.discourse-cdn.com/v4/letter/e/f05b48/32.png) [@elasticforme](https://discuss.elastic.co/u/elasticforme)\
**Post date:** [February 24, 2021, 10:08pm UTC](https://discuss.elastic.co/t/logstash-warning/265416/1 "2021-02-24T22:08:44Z")

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I am have metricbeat running on few systems. and getting this error message on and off.

can't put my fingure on about which event is generating this error.

is there a way to find out?

Basically metricbeat is running few hundred nodes and sending data to logstash.  
logstash does some processing and saves to Elasticsearch

there are sending event per min.

[2021-02-24T15:36:16,435][WARN][io.netty.channel.DefaultChannelPipeline] An exceptionCaught() event was fired, and it reached at the tail of the pipelin e. It usually means the last handler in the pipeline did not handle the exception.  
java.io.IOException: Connection reset by peer

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<div class="post-metadata">

**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:** [February 25, 2021, 2:46am UTC](https://discuss.elastic.co/t/logstash-warning/265416/2 "2021-02-25T02:46:47Z")

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> [@elasticforme](#):
>
> java.io.IOException: Connection reset by peer

It could be a firewall in the network causing a disconnect?

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<div class="post-metadata">

**Author:** ![elasticforme](https://avatars.discourse-cdn.com/v4/letter/e/f05b48/32.png) [@elasticforme](https://discuss.elastic.co/u/elasticforme)\
**Post date:** [February 25, 2021, 7:12pm UTC](https://discuss.elastic.co/t/logstash-warning/265416/3 "2021-02-25T19:12:47Z")

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There is no firewall involve as they all in same network

```
 systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

# cat /etc/selinux/config

SELINUX=disabled

# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
```

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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:** [March 25, 2021, 7:13pm UTC](https://discuss.elastic.co/t/logstash-warning/265416/4 "2021-03-25T19:13:19Z")

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