[erlang-questions] Start erl in daemon mode at boot

[Antoine Koener]

On May 12, 2011, at 08:54 , Rapsey wrote:

> My current way to run erlang as daemon in ubuntu:
>
> Script that executes erlang itself with my app:
> #!/bin/sh
> cd /path/to/ebin
> erl +Bd +P 1000000 -env ERL_MAX_PORTS 100000 +K true +A 32 -mnesia  
> dir '"/path/to/mnesia"' -eval "myapp:start()"
>
>
> Upstart file. Placed in /etc/init/nameofapp.conf. It runs erlang  
> through dtach, which allows me to enter the console at any time and  
> pipes outout to a logfile. To attach to erlang simply run: dtach -a / 
> tmp/erl
> There is one problem with this setup. sudo stop name_of_app does not  
> work.

What about:
> #!/bin/sh
> cd /path/to/ebin
> erl +Bd +P 1000000 -env ERL_MAX_PORTS 100000 +K true +A 32 -mnesia  
> dir '"/path/to/mnesia"' -eval "myapp:start()"


exec erl +Bd +P 1000000 -env ERL_MAX_PORTS 100000 +K true +A 32 - 
mnesia dir '"/path/to/mnesia"' -eval "myapp:start()"

The stop signal will then be received by erl and not /bin/sh

> It will remove the job, but erlang won't actually be killed. If I  
> want to turn the daemon off, I have to go to erl console through  
> dtach and execute q().
>
> start on filesystem and net-device-up
> stop on runlevel [06]
>
> env HOME=/home/ubuntu
> respawn
> console output
>
> script
> exec start-stop-daemon --name NAME_OF_INSTANCE --start --chuid  
> USER_TO_RUN_AS --exec /usr/bin/dtach -- -c /tmp/erl /PATH/TO/SCRIPT  
> > /var/log/erl.log
> end script
>
>
> Sergej
>
> On Wed, May 11, 2011 at 10:26 PM, Wes James <comptekki@REDACTED>  
> wrote:
> Does this help any:
>
> http://ubuntuforums.org/showthread.php?t=648425
>
> -wes
>
> On Wed, May 11, 2011 at 2:22 PM, Hank Knight <hknight555@REDACTED>  
> wrote:
> > I am trying to start erl in daemon mode, using the -detached  
> parameter.
> >
> > It runs correctly when initiated from a command line however it  
> fails
> > when initiated using rc.local at boot time.
> >
> > I am running Erlang on Ubuntu.
> >
> > Any ideas on how to get it to run in daemon mode at boot time?
> >
> > Thanks,
> > Hank
> > _______________________________________________
> > erlang-questions mailing list
> > erlang-questions@REDACTED
> > http://erlang.org/mailman/listinfo/erlang-questions
> >
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