AlexanderZhirov
commented
2 years ago UPD
As I understand it, the global variables that I am passing are completely absent.
[Unit]
Description=printip
DefaultDependencies=no
After=icewm-init.service
Before=display-manager.service
[Service]
Type=oneshot
RemainAfterExit=yes
Environment="IP=$CLIENT_IP"
Environment="IFACE=$NET_DEVICE"
EnvironmentFile=/etc/thinstation.env
ExecStart=/etc/init.d/printip
SyslogIdentifier=thinstation
[Install]
WantedBy=multi-user.targetI wrote a utility for diagnosing variables:
import std.stdio : writeln , File;
import std.process : environment;
import std.exception;
int main()
{
File file;
int error = 0;
try
{
file = File("/var/log/printip.log", "w");
}
catch (Exception e)
{
++error;
return error;
}
try
{
file.writeln("\t IP: " ~ environment["CLIENT_IP"].idup);
}
catch (Exception e)
{
file.writeln(e.msg);
++error;
}
try
{
file.writeln("\t IFACE: " ~ environment["NET_DEVICE"].idup);
}
catch (Exception e)
{
file.writeln(e.msg);
++error;
}
try
{
file.writeln("\tTSUSER: " ~ environment["TSUSER"].idup);
}
catch (Exception e)
{
file.writeln(e.msg);
++error;
}
file.close();
return error;
}After launching checking the status of the service:
ts_d85ed3156a39:~# systemctl status printip
● printip.service - printip
Loaded: loaded (/etc/systemd/system/printip.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Fri 2022-04-29 00:35:52 MSK; 32s ago
Process: 1814 ExecStart=/etc/init.d/printip (code=exited, status=2)
Main PID: 1814 (code=exited, status=2)
апр 29 00:35:52 ts_d85ed3156a39 systemd[1]: Starting printip...
апр 29 00:35:52 ts_d85ed3156a39 systemd[1]: printip.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
апр 29 00:35:52 ts_d85ed3156a39 systemd[1]: printip.service: Failed with result 'exit-code'.
апр 29 00:35:52 ts_d85ed3156a39 systemd[1]: Failed to start printip.It can be seen that the error is equal to the value 2. Checking the log:
ts_d85ed3156a39:~# cat /var/log/printip.log
Environment variable not found: CLIENT_IP
Environment variable not found: NET_DEVICE
TSUSER: rootMy set variables were not read. But the variable installed from the file was read.
I start the service from under SSH manually:
ts_d85ed3156a39:~# systemctl start printip
Job for printip.service failed because the control process exited with error code.
See "systemctl status printip.service" and "journalctl -xe" for details.There were also errors from under SSH:
апр 29 00:35:52 ts_d85ed3156a39 systemd[1]: Starting printip...
апр 29 00:35:52 ts_d85ed3156a39 systemd[1]: printip.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
апр 29 00:36:04 ts_d85ed3156a39 crond[2769]: PORT=5900
апр 29 00:37:27 ts_d85ed3156a39 systemd[1]: Starting printip...
-- Subject: Начинается запуск юнита printip.service
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Начат процесс запуска юнита printip.service.
апр 29 00:37:27 ts_d85ed3156a39 systemd[1]: printip.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
-- Subject: Unit process exited
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- An ExecStart= process belonging to unit printip.service has exited.
--
-- The process' exit code is 'exited' and its exit status is 2.
апр 29 00:37:27 ts_d85ed3156a39 systemd[1]: printip.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- The unit printip.service has entered the 'failed' state with result 'exit-code'.
апр 29 00:37:27 ts_d85ed3156a39 systemd[1]: Failed to start printip.
-- Subject: Ошибка юнита printip.service
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Произошел сбой юнита printip.service.
--
-- Результат: failed.
апр 29 00:37:27 ts_d85ed3156a39 kernel: kauditd_printk_skb: 4 callbacks suppressed
апр 29 00:37:27 ts_d85ed3156a39 kernel: audit: type=1130 audit(1651181847.291:59): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=p
апр 29 00:37:27 ts_d85ed3156a39 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=printip comm="systemd" exe="It is not possible to transfer variables from the global environment inside the service being started.
Doncuppjr
Thinstation
I need to display the IP address of a thin client in the corner of the screen. I decided to print it in the background of the image. I wrote a program in D language (a very simple program):
Based on this program, I created a service
printip, filepackages/printip/etc/systemd/system/printip.service:Also created a link for autorun
packages/printip/etc/systemd/system/multi-user.target.wants/printip.service. The startup scriptpackages/printip/etc/init.d/printiplooks like this:I pass 5 values as arguments: background, font, IP address, screen width, screen height.
I include the package in the build. Loading up. No effect occurs.
It feels like the
/var/log/applications/resolutionsfile doesn't exist! But it ALREADY exists whenIceWMis launched. I connect via ssh and see this file:I remove the check for the existence of the file
/var/log/applications/resolutionsfrom the startup script and rebuild the image again. This time, without checking, obvious startup errors are visible:I check the log to find an error and I get this:
Just those two screen resolution parameters that I'm trying to pass.
If I manually start the service, it turns out like this:
I also tried to pass the global variable
$CLIENT_IPas an argument, but nothing came out. There were also errors when starting, even manually starting the service. As I understand it, it is possible to pass global variables tosystemd, but I could not do it by means ofsystemdthrough global definitions (throughEnvironment=,EnvironmentFile=) nor through thesystemctl --user import-environmentcommand.It is not even possible to pass arguments statically:
Result after reboot:
Please help me figure it out. How do I CORRECTLY pass the parameters I specified above as arguments so that the service starts automatically without errors?