Rabbitmq: No logs are seen in /var/log/rabbitmq

[w7089]

Hi, i have set env variable

RABBITMQ_LOG_BASE=/var/log/rabbitmq

during service deployment and its value is seen in the container.

But _/var/log/rabbitmq_ is empty.

While doing docker logs -f container_id does show the logs.
Where are the logs stored and how to see them?

[michaelklishin]

It would help if you clarified how exactly was the environment variable set. Default directory locations are documented.

[w7089]

Hi, Michael.
Thanks.
It was set in service descriptor _yaml_

      ...
      environment:              
        - RABBITMQ_LOG_BASE=/var/log/rabbitmq  
      ...

From the link you provided there are 3 relevant lines:

RABBITMQ_LOG_BASE | ${install_prefix}/var/log/rabbitmq
RABBITMQ_LOGS | $RABBITMQ_LOG_BASE/$RABBITMQ_NODENAME.log
RABBITMQ_SASL_LOGS | $RABBITMQ_LOG_BASE/$RABBITMQ_NODENAME-sasl.log

That's what i'm trying to say: _$RABBITMQ_NODENAME.log_ and _$RABBITMQ_NODENAME-sasl.log_ and are not created in _$RABBITMQ_LOG_BASE_ which was set to _/var/log/rabbitmq_ via given env variable

[yosifkit]

They are stored in Docker logs which can be configured to be sent to a logging service (for example, via gelf or syslog). If you really need it to write to a file inside the container, then you need to also set RABBITMQ_LOGS and RABBITMQ_SASL_LOGS since we set them to std out in the Dockerfile:

https://github.com/docker-library/rabbitmq/blob/ba7ea670b5c084417d1f03cb07012314ba51c57a/3.6/debian/Dockerfile#L53-L55

[tianon]

Indeed, this is by design -- if you want the logs to go to files, you'll need to unset or override the provided RABBITMQ_LOGS and/or RABBITMQ_SASL_LOGS environment variables.