How to configure memory settings?

[betrcode]

It seems docker-entrypoint.sh creates/overwrites the configuration file for rabbitmq.

Maybe I have missed something obvious in the documentation, but how do I get in custom configuration into the config file? Example, I'd like to be able to set vm_memory_high_watermark_paging_ratio as described in https://www.rabbitmq.com/memory.html

Help is much appreciated!

Update: This seems to be related to #76 and #120

[tianon]

Currently the only way to do so is by choosing to either fork our entrypoint script or to ignore our environment variables and create the entire configuration file yourself (which is what I'd recommend).

At some point (hopefully soon), upstream is going to replace their Erlang-based configuration file with an INI-ish syntax, which will allow us to be more forgiving of existing user-supplied content (by appending/modifying instead of replacing completely). 👍

[betrcode]

Thanks @tianon
I think the simplest way to go is to set the RABBITMQ_CONFIG_FILE environment variable when starting the docker container, and refer to a custom configuration file which we can provision in a mapped docker volume.

[ash9002]

@betrcode @tianon

How is this done?

I've tried

docker service create --name rmq --network rnet -e RABBITMQ_ERLANG_COOKIE='arsenal' --mount type=bind,source=/root/mounted/,destination=/root -e RABBITMQ_CONFIG_FILE=/root/rabbitmq.config rabbitmq

But when I look at the rabbitmq.config in the container it's still the default one containing the following:
[ { rabbit, [ { loopback_users, [ ] } ] } ].