[systemd-devel] No signal sent to stop service

[David Cunningham]

Hello,

I'm developing a service called product_routed which is managed by systemd.
The service can normally be stopped with "service product_routed stop" or
"systemctl stop product_routed", however for some reason after the service
has been running for a while (a few days or more) the stop command no
longer works. Can anyone help me find why?

When the application stop works initially (for the first day or two) we see
a TERM signal sent to the application, as confirmed by logging in the
application itself (which is written in perl), and is reported by "strace
-p <pid> -e 'trace=!all'". However once the problem starts no signal is
sent to the application at all when "service product_routed stop" or
"systemctl stop product_routed" is run.

The systemd file is as below, and we've confirmed that the PIDFile contains
the correct PID when the stop is attempted. Would anyone have any
suggestions on how to debug this? Thank you in advance.

# cat /etc/systemd/system/product_routed.service
[Unit]
Description=Product routing daemon
After=syslog.target network.target mysql.service

[Service]
Type=forking
ExecStart=/opt/product/current/bin/routed
PIDFile=/var/run/product/routed.pid
Restart=on-abnormal
RestartSec=1
LimitSTACK=infinity
LimitNOFILE=65535
LimitNPROC=65535

[Install]
WantedBy=multi-user.target


-- 
David Cunningham, Voisonics Limited
http://voisonics.com/
USA: +1 213 221 1092
New Zealand: +64 (0)28 2558 3782
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