# Docker Logstash initialisation error

**URL:** <https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972>\
**Category:** Logstash\
**Created:** [February 22, 2017, 1:15am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972 "2017-02-22T01:15:36Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![pravinnair](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pravinnair/32/32496_2.png) [@pravinnair](https://discuss.elastic.co/u/pravinnair)\
**Post date:** [February 22, 2017, 1:15am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/1 "2017-02-22T01:15:36Z")

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Hi

I recive this error in logstash when i try to start it.  
This stops the poller.Any help or input can help.

[pool-2-thread-1] DEBUG logstash.instrument.periodicpoller.cgroup - Error, cannot retrieve cgroups information {:exception=\>"Errno::ENOENT", :message=\>"No such file or directory - /sys/fs/cgroup/cpuacct/system.slice/docker-fd0fb5d54defdc22fc7f777a00764e769be862a7b31333252b2f8ddbac2bc67e.scope/cpuacct.usage"}

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**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 22, 2017, 1:20am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/2 "2017-02-22T01:20:39Z")

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What version, what does your config look like?

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**Author:** ![pravinnair](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pravinnair/32/32496_2.png) [@pravinnair](https://discuss.elastic.co/u/pravinnair)\
**Post date:** [February 22, 2017, 1:38am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/3 "2017-02-22T01:38:03Z")

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Logstash version is 5.2.1, I just pulled latest from the docker.

This is the run command

docker run -d --name logstash -v /opt/elastic/logstash/conf.d:/etc/logstash/conf.d:ro -v /opt/elastic/logstash/log:/host/var/log --net host logstash logstash -f /etc/logstash/conf.d/input.conf --debug

This is the input.conf

input { stdin { } }  
output {  
elasticsearch {  
hosts =\> ["localhost:9200"]  
}  
stdout { codec =\> rubydebug }  
}

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [February 22, 2017, 6:51am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/4 "2017-02-22T06:51:44Z")

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I'd expect you to have to mount /sys into the container, but even when doing that I get the same error as you do.

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**Author:** ![pravinnair](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pravinnair/32/32496_2.png) [@pravinnair](https://discuss.elastic.co/u/pravinnair)\
**Post date:** [February 22, 2017, 12:05pm UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/5 "2017-02-22T12:05:16Z")

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I did some more digging . It might be some warning of backend cgroup  
process is unavailable.  
I was able to run logstash with that message though.  
Let me knw if this needs to be reported to docker or at logstash.

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**Author:** ![pplanel](https://avatars.discourse-cdn.com/v4/letter/p/c68b51/32.png) [@pplanel](https://discuss.elastic.co/u/pplanel)\
**Post date:** [February 23, 2017, 12:50am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/6 "2017-02-23T00:50:47Z")

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Same issue here and I'm not using Docker.  
Im on AWS EC2 instance.

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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:** [March 23, 2017, 12:50am UTC](https://discuss.elastic.co/t/docker-logstash-initialisation-error/75972/7 "2017-03-23T00:50:53Z")

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