Thanks, Jaap, for some great sleuthing!

Do you know if this a recent change in Ubuntu 19.10?

I've been using systemd for quite some time and have not seen this before.

-tk

On Mon, Jan 20, 2020 at 9:07 AM Jaap de Munck <[email protected]> wrote:

> Hi
>
> Been trying to get Weewx running on Ubuntu 19.10 but problems...
>
> This how it looks (directly after weewx is started).
>
> m@ubuntu1910n:~$ sudo systemctl status weewx
> ● weewx.service - weewx weather system
>    Loaded: loaded (/etc/systemd/system/weewx.service; enabled; vendor
> preset: en
>    Active: deactivating (stop-sigterm) since Tue 2020-01-14 00:08:18 CET;
> 1s ago
>   Process: 10656 ExecStart=/home/weewx/bin/weewxd --daemon
> --pidfile=/var/run/we
>  Main PID: 10656 (code=exited, status=0/SUCCESS)
>     Tasks: 1 (limit: 1435)
>    Memory: 8.7M
>    CGroup: /system.slice/weewx.service
>            └─10670 /usr/bin/python3 /home/weewx/bin/weewxd --daemon
> --pidfile=/v
>
> jan 14 00:08:18 ubuntu1910n weewxd[10656]: weewx[10656] INFO weewx.engine:
> Using
>                                            [GCC 9.2.1 20191008]
> jan 14 00:08:18 ubuntu1910n weewxd[10656]: weewx[10656] INFO weewx.engine:
> Platf
> jan 14 00:08:18 ubuntu1910n weewxd[10656]: weewx[10656] INFO weewx.engine:
> Local:
> Jan 14 00:08:18 ubuntu1910n systemd[1]: Started weewx weather system.
> Jan 14 00:08:18 ubuntu1910n weewx[10656] INFO weewx.engine: Initializing
> weewx version 4.0.0b8
> Jan 14 00:08:18 ubuntu1910n weewx[10656] INFO weewx.engine: Using Python
> 3.7.5 (default, Nov 20 2019, 09:21:52) #012[GCC 9.2.1 20191008]
> Jan 14 00:08:18 ubuntu1910n weewx[10656] INFO weewx.engine: Platform
> Linux-5.3.0-26-generic-x86_64-with-Ubuntu-19.10-eoan
> Jan 14 00:08:18 ubuntu1910n weewx[10656] INFO weewx.engine: Locale is
> 'LC_CTYPE=en_US.UTF-8;LC_NUMERIC=nl_NL.UTF-8;LC_TIME=nl_NL.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=nl_NL.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=nl_NL.UTF-8;LC_NAME=nl_NL.UTF-8;LC_ADDRESS=nl_NL.UTF-8;LC_TELEPHONE=nl_NL.UTF-8;LC_MEASUREMENT=nl_NL.UTF-8;LC_IDENTIFICATION=nl_NL.UTF-8'
> Jan 14 00:08:18 ubuntu1910n weewx[10656] INFO weewx.engine: PID file is
> /var/run/weewx.pid
> Jan 14 00:08:18 ubuntu1910n weewx[10670] INFO weewx.engine: Using
> configuration file /home/weewx/weewx.conf
> Jan 14 00:08:18 ubuntu1910n weewx[10670] DEBUG weewx.engine: Debug is 1
> Jan 14 00:08:18 ubuntu1910n weewx[10670] DEBUG weewx.engine: Initializing
> engine
> Jan 14 00:08:18 ubuntu1910n weewx[10670] INFO weewx.engine: Loading
> station type Vantage (weewx.drivers.vantage)
> ...
> Weewx is running (that seems ok). But then...
> ...
> Jan 14 00:08:29 ubuntu1910n weewx[10670] INFO weewx.engine: Using binding
> 'wx_binding' to database 'weewx'
> Jan 14 00:08:29 ubuntu1910n weewx[10670] INFO weewx.manager: Starting
> backfill of daily summaries
> Jan 14 00:08:29 ubuntu1910n weewx[10670] DEBUG weewx.drivers.vantage:
> Getting archive packets since 2020-01-14 00:00:00 CET (1578956400)
> Jan 14 00:08:30 ubuntu1910n weewx[10670] DEBUG weewx.drivers.vantage:
> Gentle wake up of console successful
> Jan 14 00:08:31 ubuntu1910n weewx[10670] DEBUG weewx.drivers.vantage:
> Retrieving 0 page(s); starting index= 0
> Jan 14 00:08:31 ubuntu1910n weewx[10670] INFO weewx.engine: Starting main
> packet loop.
> Jan 14 00:08:32 ubuntu1910n weewx[10670] DEBUG weewx.drivers.vantage:
> Gentle wake up of console successful
> Jan 14 00:08:33 ubuntu1910n weewx[10670] DEBUG weewx.drivers.vantage:
> Requesting 200 LOOP packets.
> Jan 14 00:08:33 ubuntu1910n weewx[10670] INFO weewx.engine: Received
> signal TERM (15).
> Jan 14 00:08:33 ubuntu1910n weewx[10670] INFO weewx.engine: Main loop
> exiting. Shutting engine down.
> Jan 14 00:08:33 ubuntu1910n weewx[10670] DEBUG weewx.restx: Shut down WOW
> thread.
> Jan 14 00:08:33 ubuntu1910n weewx[10670] DEBUG weewx.restx: Shut down
> Wunderground-PWS thread.
> Jan 14 00:08:33 ubuntu1910n weewx[10670] DEBUG weewx.restx: Shut down
> StationRegistry thread.
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine: Terminating
> weewx version 4.0.0b8
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> Traceback (most recent call last):
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/engine.py", line 903, in main
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> engine.run()
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/engine.py", line 194, in run
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> for packet in self.console.genLoopPackets():
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/drivers/vantage.py", line 534, in genLoopPackets
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> for _loop_packet in self.genDavisLoopPackets(200):
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/drivers/vantage.py", line 554, in
> genDavisLoopPackets
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> self.port.wakeup_console(self.max_tries)
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/drivers/vantage.py", line 96, in wakeup_console
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> self.write(b'\n')
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/drivers/vantage.py", line 422, in write
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> time.sleep(self.tcp_send_delay)
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> File "/home/weewx/bin/weewx/engine.py", line 823, in sigTERMhandler
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> raise Terminate
> Jan 14 00:08:34 ubuntu1910n weewx[10670] INFO weewx.engine:     ****
> weewx.engine.Terminate
> Jan 14 00:08:34 ubuntu1910n systemd[1]: weewx.service: Succeeded.
>
> Seems we are using the wrong startup type in the unit configuration file
> for the systemd. We should be using forking.
> https://www.freedesktop.org/software/systemd/man/systemd.service.html
>
>
> *"If set to simple, the service manager will consider the unit started
> immediately after the main service process has been forked off. It is
> expected that the process configured with ExecStart= is the main process of
> the service.""If set to forking, it is expected that the process configured
> with ExecStart= will call fork() as part of its start-up. The parent
> process is expected to exit when start-up is complete and all communication
> channels are set up. The child continues to run as the main service
> process, and the service manager will consider the unit started when the
> parent process exits."*
> weewx.service (in /etc/systemd/system)
>
> # systemd configuration for weewx
>
> [Unit]
> Description=weewx weather system
> Requires=time-sync.target
> After=time-sync.target
> RequiresMountsFor=/home
>
> [Service]
> #ExecStart=/home/weewx/bin/weewxd --daemon --pidfile=/var/run/weewx.pid
> /home/weewx/weewx.conf
> ExecStart=/home/weewx/bin/weewxd --daemon --pidfile=/run/weewx.pid
> /home/weewx/weewx.conf
> ExecReload=/bin/kill -HUP $MAINPID
> #Type=simple
> Type=forking
> #PIDFile=/var/run/weewx.pid
> PIDFile=/run/weewx.pid
> #User=weewx
> #Group=weewx
>
> [Install]
> WantedBy=multi-user.target
>
> About the PIDFile path: *"The path specified typically points to a file
> below /run/.*" This behouvior is changed since systemd 240. A warning is
> issued otherwise:
> *"Line references path below legacy directory /var/run/, updating
> /var/run/weewx.pid → /run/weewx.pid; please update the unit file
> accordingly."*
>
> Ubuntu 19.10 then works fine (also Debian10 Buster and Ubuntu 19.04).
>
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