set RABBITMQ_MNESIA_BASE in rabbitmq-env-conf.bat

[fnbk]

Describe the bug

Based on the documentation it should be possible to set RABBITMQ_MNESIA_BASE in the rabbitmq-env.conf file.

On windows this does not work. I have set the following configuration file:

%appdata%\RabbitMQ\rabbitmq-env-conf.bat

REM data directory
set RABBITMQ_MNESIA_BASE="E:\rabbitmq"

based on this guide: https://www.rabbitmq.com/configure.html#rabbitmq-env-file-windows

Reproduction steps

1. install RabbitMQ using windows-installer
2. create %appdata%\RabbitMQ\rabbitmq-env-conf.bat

REM data directory
set RABBITMQ_MNESIA_BASE="E:\rabbitmq"

3. re-install RabbitMQ service

rabbitmq-service.bat stop
rabbitmq-service.bat remove
rabbitmq-service.bat install
rabbitmq-service.bat start

Expected behavior

Expected: E:\rabbitmq directory should be created
Actual: %appdata%\RabbitMQ\db is created

Additional context

versions:

• RabbitMQ 3.11.8
• Erlang 25.2.2

[michaelklishin]

The issue is most likely in one of these files:

• rabbitmq-defaults.bat
• rabbitmq-env.bat
• rabbitmq-server.bat

[lukebakken]

@fnbk thanks for reporting this issue. I will take a look as time allows.

I can think of the following workarounds (untested as of yet):

• Set RABBITMQ_MNESIA_BASE as a system environment variable, then re-install the Windows service
• Set RABBITMQ_BASE as a system environment variable, then re-install the Windows service. This is the usual variable that people use to move where RabbitMQ expects to find config files and save data

PS when using set, there is no need to use double quotes, even if spaces are present.

[lukebakken]

Thanks @michaelklishin