# Metricbeat 7.7.1 : Failed to publish events caused by: unsupported float value: NaN

**URL:** <https://discuss.elastic.co/t/metricbeat-7-7-1-failed-to-publish-events-caused-by-unsupported-float-value-nan/240400>\
**Category:** Beats\
**Tags:** metricbeat\
**Created:** [July 8, 2020, 4:16pm UTC](https://discuss.elastic.co/t/metricbeat-7-7-1-failed-to-publish-events-caused-by-unsupported-float-value-nan/240400 "2020-07-08T16:16:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jlvrhee](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jlvrhee/32/71828_2.png) [@jlvrhee](https://discuss.elastic.co/u/jlvrhee)\
**Post date:** [July 8, 2020, 4:16pm UTC](https://discuss.elastic.co/t/metricbeat-7-7-1-failed-to-publish-events-caused-by-unsupported-float-value-nan/240400/1 "2020-07-08T16:16:48Z")

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Metricbeat version: 7.7.1  
OS version : Flatcar 2303.4.0 and RHEL 7.4  
Docker : Docker version 18.06.3-ce, build d7080c1  
We also configured docker swarm on these nodes

Config:

```auto
   #-------------------------------- System Module --------------------------------
- module: system
  enabled: true
  period: 10s
  metricsets:
    - cpu
    - load
    - memory
    - network
    - process
    - process_summary
    - socket_summary
    - core
    - diskio
    - socket
  process.include_top_n:
    by_cpu: 5 # include top 5 processes by CPU
    by_memory: 5 # include top 5 processes by memory

- module: system
  period: 1m
  metricsets:
    - filesystem
    - fsstat
    - service
    - users
  processors:
  - drop_event.when.regexp:
      system.filesystem.mount_point: '^/(sys|cgroup|proc|dev|etc|host|lib|snap)($|/)'

- module: system
  period: 15m
  metricsets:
    - uptime

#-------------------------------- Docker Module --------------------------------
- module: docker
  enabled: true
  period: 10s
  metricsets:
    - container
    - cpu
    - diskio
    - event
    - healthcheck
    - info
    - memory
    - network
  hosts: ["unix:///var/run/docker.sock"]

```

The logs after a certain period get full with:

```auto
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.169+0200 DEBUG [logstash] logstash/async.go:119 connect
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.177+0200 INFO [publisher_pipeline_output] pipeline/output.go:111 Connection to backoff(async(tcp://cpxlog-elk102.support.local:5045)) established
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.177+0200 DEBUG [logstash] logstash/enc.go:37 Failed to encode event: &{2020-07-08 12:32:02.974424766 +0200 CEST m=+1187.408593395 {} Not valid json: json: error calling MarshalJSON for type common.Float: invalid character 'N' looking for beginning of value <nil> true}
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.177+0200 DEBUG [logstash] logstash/async.go:171 35 events out of 35 events sent to logstash host cpxlog-elk102.support.local:5045. Continue sending
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.177+0200 DEBUG [logstash] logstash/async.go:127 close connection
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.177+0200 DEBUG [transport] transport/client.go:118 closing
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.178+0200 ERROR [logstash] logstash/async.go:279 Failed to publish events caused by: unsupported float value: NaN
Jul 08 13:05:53 sldclr0102 metricbeat[129177]: 2020-07-08T13:05:53.178+0200 DEBUG [logstash] logstash/async.go:127 close connection
 

```

It looks like this starts when containers are stopped/started but we can't easily determine which metricset is causing this.

---

<div class="post-metadata">

**Author:** ![ChrsMark](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chrsmark/32/55858_2.png) [@ChrsMark](https://discuss.elastic.co/u/ChrsMark)\
**Post date:** [July 13, 2020, 7:27am UTC](https://discuss.elastic.co/t/metricbeat-7-7-1-failed-to-publish-events-caused-by-unsupported-float-value-nan/240400/2 "2020-07-13T07:27:19Z")

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Hi!

This looks like a bug. Could you please open a Github issue for this?

C.

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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:** [August 10, 2020, 9:27am UTC](https://discuss.elastic.co/t/metricbeat-7-7-1-failed-to-publish-events-caused-by-unsupported-float-value-nan/240400/3 "2020-08-10T09:27:21Z")

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