Docker Logstash initialisation error

[pravinnair (Pravin)]

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"}

[warkolm (Mark Walkom)]

What version, what does your config look like?

[pravinnair (Pravin)]

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 }
}

[magnusbaeck (Magnus Bäck)]

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.

[pravinnair (Pravin)]

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.

[pplanel (Pedro Gabriel Planel)]

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