[systemd-devel] systemd TimeoutStopSec not working

[mmbella]

Hello,

I apologize if this is not the appropriate list serve to post in 
however, I am having problems with a systemd service file not 
terminating a python script that intermittently hangs. I have tried 
other forums with no solution. The service script is listed below along 
with journalctl output, timer listings and status reports. I am not 
getting a specific error I can act on.

The actual python script works well for days then fails intermittently 
most likely due to a hung database connection. I am not asking for 
coding help with the python script only a solution to terminate the 
process if it hangs.

It appears that TimeoutStopSec intermittently fails to terminate the 
process. Any suggestion would be appreciated.

Thank you in advance.

Marc

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NEXT                         LEFT LAST                         PASSED 
UNIT                          ACTIVATES

Sun 2019-11-03 06:35:31 CST  6min left     Sat 2019-11-02 06:05:22 CDT  
1 day 1h ago apt-daily-upgrade.timer apt-daily-upgrade.service
Sun 2019-11-03 10:12:19 CST  3h 43min left Sun 2019-11-03 04:20:18 CST  
2h 8min ago  apt-daily.timer               apt-daily.service
Sun 2019-11-03 20:23:41 CST  13h left      Sat 2019-11-02 21:23:41 CDT  
10h ago      systemd-tmpfiles-clean.timer systemd-tmpfiles-clean.service
Mon 2019-11-04 00:00:00 CST  17h left      Sun 2019-11-03 00:00:00 CDT  
7h ago       logrotate.timer               logrotate.service
Mon 2019-11-04 00:00:00 CST  17h left      Sun 2019-11-03 00:00:00 CDT  
7h ago       man-db.timer                  man-db.service
n/a                          n/a           Sat 2019-11-02 22:00:45 CDT  
9h ago       outside_air_temp_sensor.timer outside_air_temp_sensor.service

10 timers listed.
Pass --all to see loaded but inactive timers, too.
● outside_air_temp_sensor.service - Winery Outside Air Temp Sensor
    Loaded: loaded (/etc/systemd/system/outside_air_temp_sensor.service; 
disabled; vendor preset: enabled)
    Active: activating (start) since Sat 2019-11-02 22:00:45 CDT; 9h ago
  Main PID: 5274 (outside_air_tem)
     Tasks: 1 (limit: 2200)
    Memory: 5.7M
    CGroup: /system.slice/outside_air_temp_sensor.service
            └─5274 /usr/bin/python3 /home/marc/scripts/outside_air_temp.py

Nov 02 22:00:45 winerypi systemd[1]: Starting Winery Outside Air Temp 
Sensor...
Nov 02 22:00:46 winerypi outside_air_temp.py[5274]: TERM environment 
variable not set.
● outside_air_temp_sensor.timer - "Run the outside air temp sensor 
script every few minutes and log data"
    Loaded: loaded (/etc/systemd/system/outside_air_temp_sensor.timer; 
enabled; vendor preset: enabled)
    Active: active (running) since Fri 2019-11-01 21:07:39 CDT; 1 day 
10h ago
   Trigger: n/a

Nov 01 21:07:39 winerypi systemd[1]: Started "Run the outside air temp 
sensor script every few minutes and log data".
-- Logs begin at Fri 2019-11-01 21:07:35 CDT, end at Sun 2019-11-03 
06:30:39 CST. --
Nov 01 21:07:39 winerypi systemd[1]: Started "Run the outside air temp 
sensor script every few minutes and log data".
-- Logs begin at Fri 2019-11-01 21:07:35 CDT, end at Sun 2019-11-03 
06:30:45 CST. --

Nov 02 20:31:37 winerypi systemd[1]: outside_air_temp_sensor.service: 
Succeeded.
Nov 02 20:31:37 winerypi systemd[1]: Started Winery Outside Air Temp Sensor.
Nov 02 21:00:27 winerypi systemd[1]: Starting Winery Outside Air Temp 
Sensor...
Nov 02 21:00:27 winerypi outside_air_temp.py[5125]: TERM environment 
variable not set.
Nov 02 21:00:38 winerypi systemd[1]: outside_air_temp_sensor.service: 
Succeeded.
Nov 02 21:00:38 winerypi systemd[1]: Started Winery Outside Air Temp Sensor.
Nov 02 21:30:00 winerypi systemd[1]: Starting Winery Outside Air Temp 
Sensor...
Nov 02 21:30:00 winerypi outside_air_temp.py[5198]: TERM environment 
variable not set.
Nov 02 21:30:11 winerypi systemd[1]: outside_air_temp_sensor.service: 
Succeeded.
Nov 02 21:30:11 winerypi systemd[1]: Started Winery Outside Air Temp Sensor.
Nov 02 22:00:45 winerypi systemd[1]: Starting Winery Outside Air Temp 
Sensor...
Nov 02 22:00:46 winerypi outside_air_temp.py[5274]: TERM environment 
variable not set.

## SERVICE FILE

[Unit]
Description=Winery Outside Air Temp Sensor

[Service]
ExecStart=/home/marc/scripts/outside_air_temp.py
Type=oneshot
User=root
Group=marc
WorkingDirectory=/home/marc/scripts
TimeoutStopSec=360

[Install]
WantedBy=multi-user.target

## TIMER FILE


[Unit]
Description="Run the outside air temp sensor script every few minutes 
and log data"

[Timer]
OnCalendar=*:0,30
RandomizedDelaySec=60
Persistent=true
Unit=outside_air_temp_sensor.service

[Install]
WantedBy=multi-user.target