CentOS

hi.
i have a lot of logs into my /var/log/messages.
every second and every minute

Oct 2 23:23:01 server systemd: Starting Session 1398 of user root.
Oct 2 23:23:01 server systemd: Started Session 1398 of user root.
Oct 2 23:24:01 server systemd: Starting Session 1399 of user root.
Oct 2 23:24:01 server systemd: Started Session 1399 of user root.
Oct 2 23:25:01 server systemd: Starting Session 1400 of user root.
Oct 2 23:25:01 server systemd: Started Session 1400 of user root.
Oct 2 23:26:01 server systemd: Starting Session 1401 of user root.
Oct 2 23:26:01 server systemd: Started Session 1401 of user root.

how can i disable it?
or just to log errors?

Modify /etc/rsyslog.conf so that you have this line:

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*.info;mail.none;authpriv.none;cron.none                /var/log/messages

Depending on what you want to do with the cron messages, you could add something like this:

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# Log cron to its own log
cron.*                                                 /var/log/cron.log

Create the file /etc/logrotate.d/cronlog

/var/log/cronlog {
compress
create 0644 root root
daily
dateext
ifempty
rotate 7
shred
postrotate
/usr/bin/killall -HUP crond 2>/dev/null || true
endscript

Restart rsyslog for your changes to take effect:

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systemctl restart rsyslog

my /etc/rsyslog.conf:

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*.info;mail.none;authpriv.none;cron.none                /var/log/messages

which thing i need to change?

Appears to be a common problem. Only fix I have found is to run the command "/usr/bin/systemd-analyze set-log-level notice". You will also need to add it to /etc/rc.local so it takes effect at each boot. If you have not already done so you will also need to enable that file (as specified in the instructions in the top of it) by running "chmod +x /etc/rc.d/rc.local".

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vi /etc/systemd/system.conf

change

#LogLevel=info

to

LogLevel=notice

CentOS

systemd Starting Session

systemd Starting Session

Re: systemd Starting Session

Re: systemd Starting Session

Re: systemd Starting Session

Re: systemd Starting Session