[Nut-upsuser] server watchdog

[James]

I want to set up a watchdog process to keep checking if my ups (pi_ups)
is reachable.
Something is causing the nut-server to die and the restart script
doesn't work but stopping and starting it does.


> Broadcast message from nut at gw (somewhere) (Mon Jul 23 21:27:05 2018):          
>                                                                                
> UPS pi_ups at localhost is unavailable
> $ upsc -l
> Init SSL without certificate database
> Error while connecting to localhost, disconnect
> Error: Server disconnected
> $ sudo /etc/init.d/nut-server restart 
> [....] Restarting nut-server (via systemctl): nut-server.serviceJob for nut-server.service failed because a timeout was exceeded.
> See "systemctl status nut-server.service" and "journalctl -xe" for details.
>  failed!
>                                                                                
> Broadcast message from nut at gw (somewhere) (Mon Jul 23 21:37:12 2018):          
>                                                                                
> UPS pi_ups at localhost is unavailable                                            
>                                                                                
> ^C
> $ sudo /etc/init.d/nut-server stop    
> [ ok ] Stopping nut-server (via systemctl): nut-server.service.
> $ sudo /etc/init.d/nut-server start 
> [ ok ] Starting nut-server (via systemctl): nut-server.service.
> $ upsc -l
> Init SSL without certificate database
>                                                                                
> Broadcast message from nut at gw (somewhere) (Mon Jul 23 21:38:27 2018):          
>                                                                                
> Communications with UPS pi_ups at localhost established                           
>                                                                                
> pi_ups
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