Log files are taking too much space and I can't delete\clear them
Your current logs are fine, still, those without .1
. That is good, and you can remove it with:
sudo rm /var/log/*.1
Now you command doesn't work because of this:
sudo 'Everything here runs as root' > Everything here run as user
So if you wanted to do what you tried the correct would be:
sudo sh -c "echo '' > kern.log.1"
This is because the pipe opens a shell with the current user.
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Muhammad Gelbana
Updated on September 18, 2022Comments
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Muhammad Gelbana over 1 year
After using Ubuntu for 2.5 months, my /var directory reached around 37 GB or RAM while my
/
directory is all 50 GB or RAM and the rest of space is for my/home
.I found that the following files are taking too much space in
/var/log
-rw-r----- 1 syslog adm 14G Feb 2 07:46 kern.log.1 -rw-r----- 1 syslog adm 13G Feb 2 07:46 ufw.log.1 -rw-r----- 1 syslog adm 5.9G Feb 2 07:46 syslog.1 -rw-r----- 1 syslog adm 451M Feb 2 23:53 syslog -rw-r----- 1 syslog adm 451M Feb 2 23:53 kern.log -rw-r----- 1 syslog adm 441M Feb 2 23:51 ufw.log
Side question, what is
syslog
andadm
?!Seeing
ufw
there, I checked it's configuration$ sudo ufw status verbose Status: active Logging: on (full) <<<<<
So I set logging to low
$sudo ufw logging low
I read that logrotate should handle log rolling but it's configuration doesn't seem to handle the
/var/log
directory by default.This is my
/etc/logrotate.conf
file content$ cat /etc/logrotate.conf # see "man logrotate" for details # rotate log files weekly weekly # keep 4 weeks worth of backlogs rotate 4 # create new (empty) log files after rotating old ones create # uncomment this if you want your log files compressed #compress # packages drop log rotation information into this directory include /etc/logrotate.d # no packages own wtmp, or btmp -- we'll rotate them here /var/log/wtmp { missingok monthly create 0664 root utmp rotate 1 } /var/log/btmp { missingok monthly create 0660 root utmp rotate 1 } # system-specific logs may be configured here
I tried deleting the
log-file-name.log.digit
(i.e.kernel.log.1
,ufw.log.1
,whatever.log.0
) but I couldn't. I triedsudo echo '' > kernel.log.1
but I failed too. It always says$ sudo echo '' > kern.log.1 bash: kern.log.1: Permission denied
Restarting didn't help either. The logs directory wasn't cleared (I thought linux clears all the logs when it restarts, obviously I'm wrong), and I still couldn't clear\delete the mentions logs.
How can I clear those logs and make sure I never face this situation again ?
Using Ubuntu 13.10
Answer
sudo rm /var/log/*.1
But I suspect that what made my command faile is that I tried doing the same thing while I'm inside the directory
/var/log
(i.e. pwd =/var/log
, then runningsudo rm kernel.1.log
). If someone faces the same situation, please try removing *.1 files while being in the/var/log
directory (i.e.cd /var/log;sudo rm*.1
) and report the results. Thank you. -
Muhammad Gelbana over 10 yearsI'm sorry I don't understand what you're saying !
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Braiam over 10 yearsWhich part? The first is how to remove the logs, the second is explaining why your command did fail.
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Muhammad Gelbana over 10 years
rm
wouldn't work, it saysPermission denied
. Bysudo 'Everything here runs as root' > Everything here run as user
, you mean that sudo won't run in/var/log
dir ? How can I make sure this doesn't happen again ? Is this a malfunction in my system ? -
Braiam over 10 yearsEdit your question and include the output of
sudo rm /var/log/*.1
second, no, nothing wrong is with your system, just that is not how the shell works. -
Muhammad Gelbana over 10 yearsSurprisingly the first command executed and deleted all *.1 files. I could swear I've already tried that ! Should this differ from specifying a file instead of a wildcard ? (Which what I was doing)
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Braiam over 10 years@MuhammadGelbana if the file didn't exist or was blocked, yes. It would throw an error.
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Muhammad Gelbana over 10 yearsCould the difference be the current directory where I tried to delete the files ? (i.e. pwd = /var/log) ?
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fedorqui over 8 yearsNote also
> file
empties it.