[erlang-questions] problem using erlsrv on windows server 2008

Michael McDaniel <>
Mon Jun 1 22:31:58 CEST 2009


 Though I am not an MS windows user, I noticed you have not
 mentioned this cookie 

    C:\Documents and Settings\User\.erlang.cookie

 as described here ...

    http://www.rabbitmq.com/install.html
    

~Michael


On Mon, Jun 01, 2009 at 04:20:04PM -0400, Ryan Davis wrote:
> I'm trying to run rabbitmq <http://www.rabbitmq.com/> as a service on
> Windows Server 2008, and running into some weird problems.  I'm new to
> erlang, so please forgive me when I use the wrong terms.
> 
> Rabbitmq is running as a windows service using erlsrv.exe, under the
> system account.  When I login as my user and trying to query it for
> status, I cannot connect to the rabbit erlang node.  Some googling (and
> a thread on the rabbitmq-discuss list
> <http://lists.rabbitmq.com/pipermail/rabbitmq-discuss/2009-May/004038.html>)
> indicated this was a cookie issue, that my user's erlang cookie wasn't
> matching the system account's cookie, so therefore I didn't have any
> permission to connect to the system's nodes.  Unfortunately, making the
> .erlang.cookie files in "C:\Windows" and "C:\Users\Ryan" identical did
> not solve my problem completely.  I now see some odd behavior:
> 
> If I login and try to get rabbit status, I cannot connect to the running
> erlang.  If I restart the rabbit service, then I can connect just fine. 
> If I log out and then log back in, I can't connect.  I've verified that
> my .erlang.cookie is not changing between logins.
> 
> My best guesses are:
> 
>    1. Erlsrv is changing it's cookie after I logout (doesn't make sense)
>    2. Windows Server 2008 is denying the connection due to some firewall
>       / permissions rule I can't find (more likely, but why can I
>       connect at all if there's some rule blocking it?)
> 
> I have added a firewall rules to open:
> 
>     * anything for erl5.7.1\erts-5.7.1\bin\erl.exe
>     * anything for erl5.7.1\bin\erl.exe
> 
> I was unable to find anything on google about this issue.  Has anyone
> else had similar problems?  Should I instead pursue adding a server and
> getting a Linux-based solution (read: is Windows a second-class citizen
> with Erlang)?
> 
> Thanks,
> 
> -- 
> Ryan Davis
> Acceleration.net
> Director of Programming Services
> 2831 NW 41st street, suite B
> Gainesville, FL 32606
> 
> Office: 352-335-6500 x 124
> Fax: 352-335-6506
> 

-- 
Michael McDaniel
Portland, Oregon, USA
http://autosys.us



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