[erlang-questions] HEART

Éric Pailleau <>
Mon May 11 22:32:48 CEST 2015


Hi, 
No, in fact, I m working on this.
To be short, the wrapper might be posix compliant and trap signals, create the pidfile set the heart command and launch the release.
I will maybe share my work once ready, but so many thing to do and do little time... ;-) 

Le 11 mai 2015 22:23, Roberto Ostinelli <> a écrit :
>
> Hi Eric, 
> Thank you. Do you have a recommended starter script? 
>
>
>
> > On 11/mag/2015, at 22:11, Éric Pailleau <> wrote: 
> > 
> > Hi Roberto, 
> > 
> > Good question. Heart was probably initially used for embedded systems. 
> > Monitoring your node is not that much easy, 
> > Because no pid file is created out of the box. It ends by using a wrapper that create a pidfile. 
> > Heart is also needful for hot upgrades when reboot of emulator is necessary. 
> > Mho,  you should set the HEART_command to your starter script in order to create another pidfile on reboot. See heart module documentation. 
> > Regards 
> > 
> > Le 11 mai 2015 21:13, Roberto Ostinelli <> a écrit : 
> >> 
> >> Dear list, 
> >> I'm a little confused and would like to understand whether the HEART command should be used or not. 
> >> 
> >> In non-erlang systems, I would have standard watchdogs that launch an application on OS boot, and then monitor it and relaunch it if necessary. 
> >> 
> >> What is the best practice in the erlang world? A script to start an erlang release at boot time, and use the HEART command? Others? 
> >> 
> >> The warning in the docs makes me hesitate. 
> >> 
> >> Any input welcome. 
> >> 
> >> Thanks! 
> >> r. 
> >> _______________________________________________ 
> >> erlang-questions mailing list 
> >>  
> >> http://erlang.org/mailman/listinfo/erlang-questions 


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