# Filebeat: Error while retrieving FD information: error getting number of open FD: key not found

**URL:** <https://discuss.elastic.co/t/filebeat-error-while-retrieving-fd-information-error-getting-number-of-open-fd-key-not-found/266822>\
**Category:** Beats\
**Tags:** filebeat\
**Created:** [March 10, 2021, 2:37pm UTC](https://discuss.elastic.co/t/filebeat-error-while-retrieving-fd-information-error-getting-number-of-open-fd-key-not-found/266822 "2021-03-10T14:37:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![meissen](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@meissen](https://discuss.elastic.co/u/meissen)\
**Post date:** [March 10, 2021, 2:37pm UTC](https://discuss.elastic.co/t/filebeat-error-while-retrieving-fd-information-error-getting-number-of-open-fd-key-not-found/266822/1 "2021-03-10T14:37:58Z")

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Hello,

after upgrading filebeat to version 7.9.0 I'm getting the following error :  
Filebeat: Error while retrieving FD information: error getting number of open FD: key not found

the filebeat agent is started via the init script and this happens only when I use a custom user instead of the root user which the error doesn't appear. The OS is RHEL 6.10

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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:** [April 7, 2021, 4:38pm UTC](https://discuss.elastic.co/t/filebeat-error-while-retrieving-fd-information-error-getting-number-of-open-fd-key-not-found/266822/2 "2021-04-07T16:38:35Z")

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