How to view systemd's runtime global config?

Question

systemd has many default values that can be modified by Linux distributions. (By default values, I mean general systemd settings. Not unit specific settings.) How can I see a dump of those values?

For example I am interested to see what DefaultTasksMax is.

If you found one of the answers to be correct, please accept it. — Mark Stosberg, Oct 16 '17 at 18:04

Mark Stosberg · Accepted Answer · 2016-12-05T20:19:26.507

18

You are looking for systemctl show -all for the global property set or systemctl show $servicename --all for a particular service.

I found the answer by searching man systemctl for first "dump", and then "show", which found the command.

Or to answer your specific question:

$ systemctl show --property=DefaultTasksMax
DefaultTasksMax=18446744073709551615

DefaultTasksMax was added in systemd version 228.

edited Dec 05 '16 at 20:19

answered Dec 02 '16 at 20:21

Mark Stosberg

7,731

systemctl show --property=DefaultTasksMax outputs nothing for me. – adrelanos Dec 04 '16 at 19:36
Try sudo systemctl show --all | grep DefaultTasksMax. Also, share what version of systemd you are using. – Mark Stosberg Dec 05 '16 at 15:27
No results either. Debian jessie version 215-17+deb8u5. – adrelanos Dec 05 '16 at 16:29
1

I checked the Changelog. This property was added in systemd version 228, which is why you find no default value. The property doesn't exist on your system. – Mark Stosberg Dec 05 '16 at 20:20
This answer is more clean. – Elouan Keryell-Even Oct 16 '17 at 15:00

score 0 · Answer 2 · answered Dec 02 '16 at 14:32

You can find the systemd system instance configurations at,

/etc/systemd/system.conf
/etc/systemd/system.conf.d/*.conf
/run/systemd/system.conf.d/*.conf
/usr/lib/systemd/system.conf.d/*.conf

And the user instance configurations at,

/etc/systemd/user.conf
/etc/systemd/user.conf.d/*.conf
/run/systemd/user.conf.d/*.conf
/usr/lib/systemd/user.conf.d/*.conf

For more information check manpage for systemd-system.conf

How to view systemd's runtime global config?

2 Answers2

Linked