the conf "REL_DIR"is not work in version3.9.11

[jacylb]

I used the “ERL_DIR=/usr/erlang/bin/” in file rabbitmq-defaults of version3.7.14，now I use the 3.9.11，and echo “ERL_DIR=/usr/erlang24.2/bin/” to rabbitmq-defaults， but getting starting error : erl: command not found。I don‘t want to change the $PATH，How could I do

[michaelklishin]

You are supposed to modify rabbitmq-defaults.

Modify the PATH varaible, ERL_DIR was never recommended by our team.

[jacylb]

sorry，I wrote the wrong file name，but I am supposed to modify，it doesn‘t work .As shown in figure

[michaelklishin]

I'm not sure what you are trying to convey with this screenshot. Like I said, ERL_DIR or direct RabbitMQ script modifications is not how you are supposed to configure desired Erlang path, the PATH variable is.

See #2461 for an explanation why ERL_DIR is no longer used in modern RabbitMQ releases. In fact, it started with 3.8.11 (68c3055) so you must have a leftover in your installation one way or another.

rabbitmq-env.conf is loaded early enough that maybe it can be used to export PATH but it should not be particularly difficult to do any other way. Just like using kerl should be.

[jacylb]

thank you.I just found the file .rabbitmq-server of 3.7.14 is "exec ${ERL_DIR}erl "，but the 3.9.11 is “exec erl \”.I also need to modify .rabbitmq-server.

[michaelklishin]

Then consider yourself running a fork that may or may not be upgradeable. You are doing it wrong, modifying PATH is a drastically safer and more predictable option.