On Saturday, 1 December 2018 10:51:28 UTC, Andrew Milner wrote:
>
> First of all get rid of the HUP in Cron - that does not help at all
>
> Both log sections seem to show more than pne occurrence of weewx to be 
> running - look at the PIDs.  You can only have one.
>
>
> Hi,

Actually heres a snippet from further in the log where the cron fires one 
second after the minute mid download when weewx is actually working. As you 
can see it does nothing

Dec  1 13:52:00 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:54:40 BST (1491404080) to daily summary in 'weewx.sdb'
Dec  1 13:52:00 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:55:40 BST (1491404140) to database 'weewx.sdb'
Dec  1 13:52:01 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:55:40 BST (1491404140) to daily summary in 'weewx.sdb'
Dec  1 13:52:01 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:56:40 BST (1491404200) to database 'weewx.sdb'
Dec  1 13:52:01 raspberrypi CRON[1243]: (pi) CMD (/home/pi/restart_weewx)
Dec  1 13:52:01 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:56:40 BST (1491404200) to daily summary in 'weewx.sdb'
Dec  1 13:52:01 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:57:40 BST (1491404260) to database 'weewx.sdb'
Dec  1 13:52:02 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:57:40 BST (1491404260) to daily summary in 'weewx.sdb'
Dec  1 13:52:02 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
15:58:40 BST (1491404320) to database 'weewx.sdb'

Then after it hangs you get this

Dec  1 13:52:17 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
16:27:40 BST (1491406060) to database 'weewx.sdb'
Dec  1 13:52:17 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
16:27:40 BST (1491406060) to daily summary in 'weewx.sdb'
Dec  1 13:52:17 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
16:28:40 BST (1491406120) to database 'weewx.sdb'
Dec  1 13:52:17 raspberrypi weewx[1230]: manager: Added record 2017-04-05 
16:28:40 BST (1491406120) to daily summary in 'weewx.sdb'
Dec  1 13:53:01 raspberrypi CRON[1257]: (pi) CMD (/home/pi/restart_weewx)
Dec  1 13:53:02 raspberrypi systemd[1]: Stopping LSB: weewx weather 
system...
Dec  1 13:53:02 raspberrypi weewx[1268]: Stopping weewx weather system: 
weewx not running....
Dec  1 13:53:02 raspberrypi systemd[1]: Stopped LSB: weewx weather system.
Dec  1 13:53:02 raspberrypi systemd[1]: Starting LSB: weewx weather 
system...

Again the cron fires one second past the minute but this time, as weewx has 
already crashed, it gets restarted.

Hope that better explains what's going on.

Thanks

G

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