Reduce logging of cronie and systemd-timesyncd

Kotrfa · 2014-12-16 10:17:20

Hello,

I can't find how to reduce logging of these two daemons. The log on my server looks like this:

Dec 15 22:01:01 smecpi crond[23935]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 21:33:06 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.000s/0.008s/0.001s/-31ppm
Dec 15 21:01:01 smecpi CROND[23929]: pam_unix(crond:session): session closed for user root
Dec 15 21:01:01 smecpi CROND[23930]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 21:01:01 smecpi crond[23929]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 20:58:58 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.000s/0.008s/0.002s/-30ppm
Dec 15 20:24:50 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.000s/0.009s/0.001s/-30ppm
Dec 15 20:01:01 smecpi CROND[23924]: pam_unix(crond:session): session closed for user root
Dec 15 20:01:01 smecpi CROND[23925]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 20:01:01 smecpi crond[23924]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 19:50:41 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.001s/0.008s/0.001s/-31ppm
Dec 15 19:16:33 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.001s/0.009s/0.001s/-30ppm
Dec 15 19:01:01 smecpi CROND[23918]: pam_unix(crond:session): session closed for user root
Dec 15 19:01:01 smecpi CROND[23919]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 19:01:01 smecpi crond[23918]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 18:53:39 smecpi systemd[1]: Started Cleanup of Temporary Directories.
Dec 15 18:53:39 smecpi systemd[1]: Starting Cleanup of Temporary Directories...
Dec 15 18:42:25 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.001s/0.008s/0.001s/-31ppm
Dec 15 18:08:17 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.001s/0.008s/0.001s/-30ppm (ignored)
Dec 15 18:01:01 smecpi CROND[23909]: pam_unix(crond:session): session closed for user root
Dec 15 18:01:01 smecpi CROND[23910]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 18:01:01 smecpi crond[23909]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 17:34:08 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.001s/0.009s/0.001s/-30ppm
Dec 15 17:01:01 smecpi CROND[23904]: pam_unix(crond:session): session closed for user root
Dec 15 17:01:01 smecpi CROND[23905]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 17:01:01 smecpi crond[23904]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 17:00:00 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.000s/0.009s/0.000s/-30ppm (ignored)
Dec 15 16:25:52 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.001s/0.008s/0.000s/-30ppm
Dec 15 16:01:01 smecpi CROND[23899]: pam_unix(crond:session): session closed for user root
Dec 15 16:01:01 smecpi CROND[23900]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 16:01:01 smecpi crond[23899]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 15:51:44 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.000s/0.008s/0.000s/-30ppm
Dec 15 15:17:35 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.000s/0.008s/0.002s/-30ppm
Dec 15 15:01:01 smecpi CROND[23894]: pam_unix(crond:session): session closed for user root
Dec 15 15:01:01 smecpi CROND[23895]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 15:01:01 smecpi crond[23894]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 14:43:27 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.000s/0.008s/0.002s/-30ppm
Dec 15 14:09:19 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.000s/0.008s/0.002s/-30ppm
Dec 15 14:01:02 smecpi CROND[23889]: pam_unix(crond:session): session closed for user root
Dec 15 14:01:02 smecpi CROND[23890]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 14:01:02 smecpi crond[23889]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 13:35:11 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.000s/0.008s/0.002s/-30ppm
Dec 15 13:01:02 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/+0.000s/0.008s/0.002s/-30ppm
Dec 15 13:01:01 smecpi CROND[23883]: pam_unix(crond:session): session closed for user root
Dec 15 13:01:01 smecpi CROND[23884]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 13:01:01 smecpi crond[23883]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 15 12:26:54 smecpi systemd-timesyncd[114]: interval/delta/delay/jitter/drift 2048s/-0.000s/0.008s/0.002s/-30ppm
Dec 15 12:01:01 smecpi CROND[23877]: pam_unix(crond:session): session closed for user root
Dec 15 12:01:01 smecpi CROND[23878]: (root) CMD (run-parts /etc/cron.hourly)
Dec 15 12:01:01 smecpi crond[23877]: pam_unix(crond:session): session opened for user root by (uid=0)

It's anoying at least for two reasons. Firstly, it makes hard to catch important information from other services (nginx, ssh, system maintain - log rotates...) and secondly, it takes some resources (unnecessary writes and storage).

I've also tried to find how how to change timesyncd sync interval, but without any success. It would be fine for me to run it even only about once a day.

The solution for reduce logging of cron is more complicated, since I need it for e.g. backups (using rdiff-backup). But it would be nice to have only warnings or errors reported next to backup job stdout.

No special settings are in /etc/systemd/journald.conf (only volatile storage) and timesyncd.conf (nothing there).

Units are as follows:

/usr/lib/systemd/systemd-timesyncd.service

[Unit]
Description=Network Time Synchronization
Documentation=man:systemd-timesyncd.service(8)
ConditionCapability=CAP_SYS_TIME
ConditionVirtualization=no
DefaultDependencies=no
RequiresMountsFor=/var/lib/systemd/clock
After=systemd-remount-fs.service systemd-tmpfiles-setup.service systemd-sysusers.service
Before=time-sync.target sysinit.target shutdown.target
Conflicts=shutdown.target
Wants=time-sync.target

[Service]
Type=notify
Restart=always
RestartSec=0
ExecStart=/usr/lib/systemd/systemd-timesyncd
CapabilityBoundingSet=CAP_SYS_TIME CAP_SETUID CAP_SETGID CAP_SETPCAP CAP_CHOWN CAP_DAC_OVERRIDE CAP_FOWNER
PrivateTmp=yes
PrivateDevices=yes
ProtectSystem=full
ProtectHome=yes
WatchdogSec=1min

[Install]
WantedBy=sysinit.target

/usr/lib/systemd/cronie.service

[Unit]
Description=Periodic Command Scheduler

[Service]
ExecStart=/usr/bin/crond -n
ExecReload=/usr/bin/kill -HUP $MAINPID
KillMode=process
Restart=always

[Install]
WantedBy=multi-user.target

Last edited by Kotrfa (2014-12-16 10:18:51)

Arch Linux

#1 2014-12-16 10:17:20

Reduce logging of cronie and systemd-timesyncd

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