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Logstash logging from docker container

I have a java application running in a docker container on a docker host. The application uses log4j for logging and logging in syslog. I want to be able to send syslog logs to logstash.

I changed the configuration in the rsyslog configuration file:

*.* @@<logstash host ip>:514

and I have a logstash configuration file for syslog:

input {
  syslog {
  type => syslog
  port => 514
}

}

and in logstash logs I got errors related to listening to syslog tcp listener and

exception=>#<Errno::EACCES: Permission denied - bind(2)

It seemed to me that I should indicate where the host is in the logstash configurations, and added the dockerhost + port's ip address to the configuration file, but I still get the same errors.

How can I tell logstash to see the docker container on dockerhost for logs? Am I missing a component here?

Thank.

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root. (.. root) 1024 - setuid

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