[erlang-questions] RE On node disconnections

[Olivier BOUDEVILLE]

Hi Vance,

Thanks for your answer!

Indeed by running:

        run_erl -daemon /tmp/my-pipe  . "exec erl [...]"

Then waiting for the pipes to be created, then running:

        echo "my_module:my_function()." >> /tmp/my-pipe.w

I could run a code that resists 'no_connection' exceptions and does not 
need the user to type anything in the shell.

Adding a "tail -f erlang.log.1" pretty recreates what the 'init' module 
gives out-of-the-box (but with an exception-safe VM).

A minor question: in run-erl.log a line tells "Client expected on FIFO 
/tmp/my-pipe.r, but can't open"; I assume this is not a real problem? 
I would have imagined that I could read this pipe (with a tail or a cat) 
to monitor the program console outputs, possibly instead of relying on 
erlang.log.1 for that. Maybe run_erl prevents that. Actually a tee on this 
pipe could have been useful, as for longer outputs the newer logs will be 
written in erlang.log.2, which makes a console monitoring tricky ("tail -f 
erlang.log.1" having to become "tail -f erlang.log.2" etc.)

Thanks again,
Best regards,

Olivier.
---------------------------
Olivier Boudeville

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vances@REDACTED 
10/04/2013 11:34

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olivier.boudeville@REDACTED
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Objet
Re: [erlang-questions] RE On node disconnections






On Wed, Apr 10, 2013 at 11:27:52AM +0200, Olivier BOUDEVILLE wrote:
}  So: what could be the solution to run a VM as batch (without the 
}  interactive shell) while still being able to overcome errors (such as 
}  'noconnection')?

                 http://www.erlang.org/doc/embedded/users_guide.html
                 http://www.erlang.org/doc/man/run_erl.html

-- 
                 -Vance




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