[rabbitmq-discuss] RabbitHub installation problem

Mon Sep 20 10:27:22 BST 2010

Oliver,

> I just tried setting up RabbitHub under RabbitMQ 2.1.0. I managed to 
> compile it but the installation does not seem to work. Here is what I did:
> 1) Downloaded and compiled the umbrella project (according to [1])
> 2) Downloaded the source of RabbitHub and compiled it
> 3) That leaves me with a 'dist' folder with the following contents
>       rabbithub (folder)
>       amqp_client.ez
>       mochiweb.ez
>       rabbit_common.ez
>       rabbithub.ez
> 4) I then copied all of the above to the plugins directory of my
>    RabbitMQ installation. Was that the right thing to do?

No, but it's perfectly understandable that you thought so. 
rabbit_common is needed for compilation but not for running; it's a 
fault of the plugin build scripts that it ends up in dist/.

> 5) Tried to start RabbitMQ but got this error message:
>       [...]
>       Duplicated modules:
>          supervisor2 specified in rabbit and rabbit_common
>          ...
>          gen_server2 specified in rabbit and rabbit_common
> 6) So I removed the rabbit_common.ez file from the plugins directory
>    and restarted.

(That's the correct solution.)

> 7) Then the server could be started and the following output was
>    generated by rabbitmqctl status:
> Status of node rabbit at satay ...
> [{running_applications,
>      [{amqp_client,"RabbitMQ AMQP Client","0.0.0"},
>       {rabbit,"RabbitMQ","2.1.0"},
>       {os_mon,"CPO  CXC 138 46","2.2.4"},
>       {sasl,"SASL  CXC 138 11","2.1.8"},
>       {mochiweb,"MochiMedia Web Server","1.3"},
>       {inets,"INETS  CXC 138 49","5.2"},
>       {rabbithub,"rabbithub","0.0.0"},
>       {crypto,"CRYPTO version 1","1.6.3"},
>       {rabbit_mochiweb,"RabbitMQ Mochiweb Embedding","0.0.0"},
>       {mnesia,"MNESIA  CXC 138 12","4.4.12"},
>       {stdlib,"ERTS  CXC 138 10","1.16.4"},
>       {kernel,"ERTS  CXC 138 10","2.13.4"}]},
>  {nodes,[{disc,[rabbit at satay]}]},
>  {running_nodes,[rabbit at satay]}]
> ...done.
> 
> So the rabbithub and mochiweb modules are there.

Yep, that looks good to me too.

> 8) But access to http://localhost:8000 was not possible

RabbitHub now runs as a context in rabbit_mochiweb; this is by default 
on e.g., http://localhost:55672/, and RabbitHub specifically on 
http://localhost:55672/rabbithub (though you will generally want a URL 
specific to an exchange or queue).

HTH
Michael