last day (15 days later) » 

Feeds
Feeds
16:25
1
A: If `/tmp` is a symbolic link, it isn't wiped on reboot

Artur MeinildTemp files are cleaned in Ubuntu by systemd-tmpfiles and the related service /lib/systemd/system/systemd-tmpfiles-clean.service, and the configuration for said files can be configured inside /etc/tmpfiles.d/*.conf (also see this answer). To include the directory you describe, create a config file...

Kodiologist
Kodiologist
This doesn't seem to work. I created the file as you described and rebooted, and some old files I created a while ago are still there. Is there perhaps a way to see error messages that were produced during the normal operation of systemd-tmpfiles-clean.service?
Artur Meinild
Artur Meinild
To be honest, I haven't really messed that much with non-standard configuration of tmpfiles. Doesn't it work either if you manually run systemd-tmpfiles --clean?
I'll investigate this further on my own server when it reboots (which might be within a couple of weeks)..
Kodiologist
Kodiologist
Yeah, sudo systemd-tmpfiles --clean has exit code 0 and doesn't print anything, but the files remain.
Artur Meinild
Artur Meinild
I'll look into it some more.. If you stumble upon a solution, please let me know, or suggest an edit to my answer. It should be possible.. 🤔
Of course there's also the quick and dirty way by just making a cron command to clean it, but this would be more elegant (if it works).
Kodiologist
Kodiologist
I know about @reboot in crontab syntax, but it's not clear if it would run at the right time. I presume that clearing /tmp on startup is delicate because if it happens too late, you'll remove files that systemd needs for the current session.
Artur Meinild
Artur Meinild
16:25
Right - we have to get this to work..
steeldriver
steeldriver
The tmpfiles.d manpage suggests that e needs an age spec in order to cleanup ("If omitted or set to "-", no automatic clean-up is done.") ex. e /scratch/tmp/ - - - 0 ("If the age argument is "0", contents will be unconditionally deleted every time systemd-tmpfiles --clean is run")
Artur Meinild
Artur Meinild
@steeldriver thanks - Kodiologist try the revised solution, adding age parameter.
Kodiologist
Kodiologist
sudo systemd-tmpfiles --clean now works, but the clean still doesn't happen on reboot. Perhaps the service is run before /scratch is mounted, but I don't know what to do about that. /scratch is mounted in a seemingly normal way in /etc/fstab.
Artur Meinild
Artur Meinild
Well, a little progress.. 😬
This is strange, because my systemd-tmpfiles-clean.service already contains: After=local-fs.target. This should ensure it runs after local filesystems are mounted. Can you confirm your systemd-tmpfiles-clean.service contain that line?
Maybe you could add basic.target and see if that fixes the bootup cleanup?
steeldriver
steeldriver
@Kodiologist please check again - in my 22.04 system, the systemd-tmpfiles-clean.timer (which I believe is default) is configured to run 15 minutes after boot (OnBootSec=15min) and every 1d thereafter, so you may have looked too early?
Artur Meinild
Artur Meinild
16:25
@steeldriver great catch - thanks for all input! 👍
Kodiologist
Kodiologist
@steeldriver Oh hey, you're right. It does happen; it just takes like 15 minutes to happen. Thanks for your help.
Artur Meinild
Artur Meinild
Great to know it worked!
I've requested that comments are moved to chat, since this was a longer troubleshooting process..
steeldriver
steeldriver
... I guess you might want to change the 0 to something greater than 15mins in that case, else it might clean files that have been created after boot?
Artur Meinild
Artur Meinild
Good point - age should probably be set to 20 minutes then, to be sure..

last day (15 days later) »