Windows x64 RabbitMQ install error with Erlang environment var (ERLANG_HOME)

Question

I\'m ask/answering this question because it hung me up & it\'s likely someone else will have the same problem.

Install of RabbitMQ x64 v2.8.6 on Windows Server 2

Answer 1

There are several RabbitMQ control .bat files on windows. Every one you use needs to get changed to reflect the Erlang path correctly. In this example, I'm editing the rabbitmq-server.bat because it's one of the easier ones... any of the .bat files you want to run will need this hack to get them to work, with the rabbitmq_service.bat file being the most involved to adjust.

editing that rabbitmq_server.bat file, you can see on about line 48 or so there's a check to see if the erl.exe is found, but the path isn't correct:

if not exist "!ERLANG_HOME!\bin\erl.exe" (

that path does not match the file structure for the 5.9.2 version of Erlang. I fixed this by simply removing this path check from about line 48 to 58, then, where the .bat actually makes a call to the erl.exe on about line 129 which reads:

"!ERLANG_HOME!\bin\erl.exe" 

I simply hardcoded the path to my erl.exe:

"C:\Program Files\erl5.9.2\erts-5.9.2\bin\erl.exe" 

With the pathing correct, the rabbitmq .bat files will run.

Answer 2

I solved it in a quick and dirty way,without naming path variables I've opened the bat file and replaced every occurrence of

!ERLANG_HOME!\bin\erl.exe

with hard coded path for example might be diffrent path for you because of diffrent version

C:\Program Files\erl10.3\erts-10.3\bin\erl.exe

and replaced

%RABBITMQ_HOME%\escript\rabbitmq-plugins

with

C:\Program Files\RabbitMQ Server\rabbitmq_server-3.7.14\escript\rabbitmq-plugins

Answer 3

In my case, it should be installed erlang using admin role running

Answer 4

Just to share an up-to-date answer as of 2019: On Windows Server 2019, after setting up the environment variable, a restart is required to solve the problem.

Answer 5

Just give C:\Program Files\erl10.6\ not C:\Program Files\erl10.6\bin\erl.exe in the environment variable. If you open the server.bat file I came to know the issueenter image description here

Answer 6

1. Download Erlang or OTP - Only one Version of OTP should be installed

2. Download RabbitMQ installer

3. Install both exe file as Administrator

4. Set class path for Erlang. (Setting classpath is a bit troublesome, so follow these steps)

   1. Set a new path with name ERLANG_HOME and value C:\Program Files\erl-23.1 (do not copy bin folder here)
   2. Edit System "path" and add %ERLANG_HOME%\bin

5. Go to Start - Open rabbitmq command promt and run

   rabbitmq-plugins enable rabbitmq_management
   

6. Navigate to localhost:15672

7. Use guest/guest to login