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-   -   Log file housekeeping question (http://www.howtoforge.com/forums/showthread.php?t=29949)

chillifire 2nd January 2009 20:23

Log file housekeeping question
 
After 1 year of very safe and relliable operations I start looking at some housekeeping on my Ubuntu servers. In particular I noticed the ever growing log files in var/log (ls -l output below). There is no way I am interested in looking at these detailed logs for stuff that happened motnhs ago, so in my view these are - literally - waste of space.

The same question for the log files that build up in ISPConfig's /var/www/webx/log directory. Can old files and directories in there be deleted safely?

Questions:
Can I just remove them or what is the correct way to dispose of old log files?
Is there any way to delete and remove logfiles and logile entries that are older than a month by adjusting some configuration settings?

Any hints welcome.


Code:

-rw-r----- 1 syslog adm    640678 Jan  3 08:17 auth.log
-rw-r----- 1 syslog adm    706225 Dec 28 06:47 auth.log.0
-rw-r----- 1 syslog adm    48111 Dec 21 06:47 auth.log.1.gz
-rw-r----- 1 syslog adm    43800 Dec 14 06:47 auth.log.2.gz
-rw-r----- 1 syslog adm    46787 Dec  7 06:47 auth.log.3.gz
-rw-r----- 1 syslog adm    45194 Apr  6  2008 auth.log.4.gz
-rw-r----- 1 syslog adm    186268 Feb 25  2008 auth.log.5.gz
-rw-r----- 1 syslog adm    48736 Feb 17  2008 auth.log.6.gz
-rw-r----- 1 syslog adm    866574 Jan  3 08:18 daemon.log
-rw-r----- 1 syslog adm  14179384 Jan  3 06:53 daemon.log.0
-rw-r----- 1 syslog adm  3268667 Jan  2 07:12 daemon.log.1.gz
-rw-r----- 1 syslog adm    625527 Jan  1 06:47 daemon.log.2.gz
-rw-r----- 1 syslog adm  1695886 Dec 31 06:50 daemon.log.3.gz
-rw-r----- 1 syslog adm    953395 Dec 30 06:57 daemon.log.4.gz
-rw-r----- 1 syslog adm    610760 Dec 29 06:46 daemon.log.5.gz
-rw-r----- 1 syslog adm    575304 Dec 28 06:47 daemon.log.6.gz
-rw-r----- 1 syslog adm      1174 Dec 18 19:45 debug.0
-rw-r----- 1 syslog adm      222 Nov 21 10:08 debug.1.gz
-rw-r----- 1 syslog adm      214 Oct 23 03:27 debug.2.gz
-rw-r----- 1 syslog adm      222 Sep 17 01:40 debug.3.gz
-rw-r----- 1 root  root    2164 Dec 28 06:47 denyhosts.1.gz
-rw-r----- 1 root  root    3253 Dec 21 06:47 denyhosts.2.gz
-rw-r----- 1 root  root    1918 Dec 14 05:25 denyhosts.3.gz
-rw-r----- 1 root  root    1929 Dec  7 05:21 denyhosts.4.gz
-rw-r----- 1 root  root    2098 Nov 30 05:11 denyhosts.5.gz
-rw-r----- 1 root  root    1877 Nov 23 03:52 denyhosts.6.gz
-rw-r----- 1 root  root    1952 Nov 15 20:03 denyhosts.7.gz
-rw-r----- 1 root  adm      4302 Dec 17 02:15 dmesg.0
-rw-r----- 1 root  adm      2112 Nov 21 10:08 dmesg.1.gz
-rw-r----- 1 root  adm      2130 Sep 17 01:40 dmesg.2.gz
-rw-r----- 1 root  adm      1973 Aug 23 15:46 dmesg.3.gz
-rw-r----- 1 root  adm      1972 May 26  2008 dmesg.4.gz
-rw-r----- 1 root  adm      8066 Jan  1 16:03 dpkg.log
-rw-r----- 1 root  adm    16919 Feb 29  2008 dpkg.log.10.gz
-rw-r----- 1 root  adm    36451 Dec 18 19:29 dpkg.log.2.gz
-rw-r----- 1 root  adm      1026 Oct 16 12:17 dpkg.log.3.gz
-rw-r----- 1 root  adm      274 Sep 24 22:45 dpkg.log.4.gz
-rw-r----- 1 root  adm      5481 Sep  9 11:18 dpkg.log.5.gz
-rw-r----- 1 root  adm      3202 Jun 10  2008 dpkg.log.6.gz
-rw-r----- 1 root  adm    30100 May 28  2008 dpkg.log.7.gz
-rw-r----- 1 root  adm      652 Apr 16  2008 dpkg.log.8.gz
-rw-r----- 1 root  adm      2119 Mar 26  2008 dpkg.log.9.gz
-rw-r--r-- 1 root  root  480096 Jun  3  2008 faillog
-rw-r--r-- 1 root  root      553 Dec 18 19:23 fontconfig.log
-rw-r--r-- 1 root  root    41001 May  9  2008 ispconfig_install.log
-rw-r--r-- 1 root  root      162 Dec  6  2007 ispconfig_tee.log
-rw-r----- 1 syslog adm      9881 Jan  3 06:53 kern.log
-rw-r----- 1 syslog adm      9772 Dec 27 06:51 kern.log.0
-rw-r----- 1 syslog adm      4236 Dec 20 06:55 kern.log.1.gz
-rw-r----- 1 syslog adm      896 Dec 14 06:43 kern.log.2.gz
-rw-r----- 1 syslog adm      881 Dec  7 06:39 kern.log.3.gz
-rw-r----- 1 syslog adm      5065 Mar  9  2008 kern.log.4.gz
-rw-r----- 1 syslog adm      272 Feb 22  2008 kern.log.5.gz
-rw-rw-r-- 1 root  utmp  5841168 Jan  3 08:07 lastlog
-rw-r----- 1 syslog adm        0 Oct 23  2007 lpr.log
-rw-r----- 1 syslog adm      3087 Dec 10 20:49 mail.err.0
-rw-r----- 1 syslog adm      183 Dec  4 15:04 mail.err.1.gz
-rw-r----- 1 syslog adm      147 Nov 25 07:47 mail.err.2.gz
-rw-r----- 1 syslog adm      119 Nov 11 12:52 mail.err.3.gz
-rw-r----- 1 syslog adm  1167360 Jan  3 06:53 mail.info.0
-rw-r----- 1 syslog adm    70574 Dec 31 06:50 mail.info.1.gz
-rw-r----- 1 syslog adm    48604 Dec 28 06:46 mail.info.2.gz
-rw-r----- 1 syslog adm    115274 Dec 26 07:04 mail.info.3.gz
-rw-r----- 1 syslog adm    83341 Dec 23 06:54 mail.info.4.gz
-rw-r----- 1 syslog adm    123039 Dec 21 06:46 mail.info.5.gz
-rw-r----- 1 syslog adm    37990 Dec 14 06:43 mail.info.6.gz
-rw-r----- 1 syslog adm    22275 Jan  3 08:17 mail.log
-rw-r----- 1 syslog adm  1178571 Jan  3 06:53 mail.log.0
-rw-r----- 1 syslog adm    70968 Dec 31 06:50 mail.log.1.gz
-rw-r----- 1 syslog adm    87627 Dec 28 06:46 mail.log.2.gz
-rw-r----- 1 syslog adm    78807 Dec 25 06:58 mail.log.3.gz
-rw-r----- 1 syslog adm    84634 Dec 23 06:54 mail.log.4.gz
-rw-r----- 1 syslog adm    42300 Dec 21 06:46 mail.log.5.gz
-rw-r----- 1 syslog adm    105194 Dec 18 06:32 mail.log.6.gz
-rw-r----- 1 syslog adm    165764 Dec 28 05:38 mail.warn.0
-rw-r----- 1 syslog adm    16452 Dec 21 06:44 mail.warn.1.gz
-rw-r----- 1 syslog adm      9522 Dec 14 06:43 mail.warn.2.gz
-rw-r----- 1 syslog adm    15006 Dec  7 06:39 mail.warn.3.gz
-rw-r----- 1 syslog adm      6346 Apr 13  2008 mail.warn.4.gz
-rw-r----- 1 syslog adm      8258 Apr  6  2008 mail.warn.5.gz
-rw-r----- 1 syslog adm    28744 Dec 28 06:27 messages.0
-rw-r----- 1 syslog adm      6263 Dec 21 06:46 messages.1.gz
-rw-r----- 1 syslog adm      2515 Dec 14 06:43 messages.2.gz
-rw-r----- 1 syslog adm      2466 Dec  7 06:39 messages.3.gz
-rw-r----- 1 syslog adm      6709 Mar  9  2008 messages.4.gz
-rw-r----- 1 syslog adm      1779 Feb 24  2008 messages.5.gz
-rw-r----- 1 mysql  adm    18805 Jan  3 08:15 mysql.log
-rw-r----- 1 mysql  adm    41968 Jan  3 06:50 mysql.log.1.gz
-rw-r----- 1 mysql  adm    54382 Jan  2 07:10 mysql.log.2.gz
-rw-r----- 1 mysql  adm    45398 Jan  1 06:45 mysql.log.3.gz
-rw-r----- 1 mysql  adm    37370 Dec 31 06:50 mysql.log.4.gz
-rw-r----- 1 mysql  adm    42877 Dec 30 06:55 mysql.log.5.gz
-rw-r----- 1 mysql  adm    37293 Dec 29 06:45 mysql.log.6.gz
-rw-r----- 1 mysql  adm    34707 Dec 28 07:10 mysql.log.7.gz
-rw-r--r-- 1 root  root        0 Mar  4  2008 pycentral.log
-rw-r----- 1 syslog adm    896371 Jan  3 08:18 syslog
-rw-r----- 1 syslog adm  14659477 Jan  3 06:53 syslog.0
-rw-r----- 1 syslog adm  3415037 Jan  2 07:12 syslog.1.gz
-rw-r----- 1 syslog adm    707434 Jan  1 06:47 syslog.2.gz
-rw-r----- 1 syslog adm  1799873 Dec 31 06:50 syslog.3.gz
-rw-r----- 1 syslog adm  1045131 Dec 30 06:57 syslog.4.gz
-rw-r----- 1 syslog adm    674186 Dec 29 06:46 syslog.5.gz
-rw-r----- 1 syslog adm    688040 Dec 28 07:10 syslog.6.gz
-rw-r----- 1 syslog adm        0 Dec 21 06:47 user.log
-rw-r----- 1 syslog adm      5040 Dec 18 19:01 user.log.0
-rw-r----- 1 syslog adm      322 Nov 21 10:09 user.log.1.gz
-rw-r----- 1 syslog adm      323 Sep 17 01:41 user.log.2.gz
-rw-r----- 1 syslog adm      995 Aug 23 15:46 user.log.3.gz
-rw-r--r-- 1 root  root 14383099 Dec 25 20:39 xferlog


marpada 2nd January 2009 20:43

If you're 100% sure you won't need it you can delete them. Backing them up to DVD-R won't hurt either ;)
________
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chipsafts 5th January 2009 19:19

find the cron scripts that are doing the log rotations and adjust them [ after backing up the scripts :) ]


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