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Wed, Aug 12, 2009 4:26 pm

Clearing Space on /var

On a Solaris 7 system, I found there wasn't sufficient space in /var to allow me to install software.
# gunzip libidn-1.14-sol7-sparc-local.gz
# pkgadd -d ./libidn-1.14-sol7-sparc-local

The following packages are available:
  1  SMClibidn     libidn
                   (sparc) 1.14

Select package(s) you wish to process (or 'all' to process
all packages). (default: all) [?,??,q]:

Processing package instance <SMClibidn> from </tmp/libidn-1.14-sol7-sparc-local>

libidn
(sparc) 1.14
Simon Josefsson et al
Using </usr/local> as the package base directory.
## Processing package information.
## Processing system information.
   20 package pathnames are already properly installed.
## Verifying disk space requirements.
WARNING:
    The /var filesystem has 0 free blocks. The current installation requires 152
 blocks, which includes a required 150 block buffer for open deleted files. 152 
more blocks are needed.

Do you want to continue with the installation of <SMClibidn> [y,n,?] n

Installation of <SMClibidn> was terminated due to user request.
No changes were made to the system.

When I checked the contents of /var/log, I found the following:

# ls -l
total 139882
-rw-------   1 root     sys      26576205 Aug 12 15:11 authlog
-rw-------   1 root     other    14635403 Aug 12 15:41 maillog
-rw-r--r--   1 root     root     6605320 Aug 12 15:44 named_querylog
-rw-r--r--   1 root     root     5538180 Jul 11 06:23 named_querylog.0
-rw-r--r--   1 root     root        3651 Jun 15 16:58 named_querylog.1
-rw-r--r--   1 root     other     794523 Jun 15 15:39 named_querylog.2.gz
-rw-------   1 root     other    4106078 Jun 24 18:04 poplog
-rw-------   1 root     other    13249096 Aug 12 14:50 sshd.log
-rwxrwxrwx   1 root     other        240 Jul 27  2000 sysidconfig.log

I moved authlog, maillog, and sshd.log to a a directory under /home, recreated the files in /var/log with touch, set the permissions to 600, and changed the group to what it had been previously on authlog.

# touch authlog.log
# touch maillog.log
# touch sshd.log
# chmod 600 authlog
# chmod 600 maillog
# chmod 600 sshdlog
# chgrp sys authlog
# ls -l
total 33402
-rw-------   1 root     sys            0 Aug 12 15:52 authlog
-rw-------   1 root     other          0 Aug 12 15:49 maillog
-rw-r--r--   1 root     root     6610244 Aug 12 15:54 named_querylog
-rw-r--r--   1 root     root     5538180 Jul 11 06:23 named_querylog.0
-rw-r--r--   1 root     root        3651 Jun 15 16:58 named_querylog.1
-rw-r--r--   1 root     other     794523 Jun 15 15:39 named_querylog.2.gz
-rw-------   1 root     other    4106078 Jun 24 18:04 poplog
-rw-------   1 root     other          0 Aug 12 15:55 sshd.log
-rwxrwxrwx   1 root     other        240 Jul 27  2000 sysidconfig.log

I then restarted the syslog daemon so it would use the new files.

# /etc/init.d/syslog stop
# /etc/init.d/syslog start
syslog service starting.

When I then checked the free space for /var, 94% of the capacity was used, whereas it had been 100% previously.

# df -k
Filesystem            kbytes    used   avail capacity  Mounted on
/proc                      0       0       0     0%    /proc
/dev/dsk/c0t0d0s0    2052750 1646775  344393    83%    /
fd                         0       0       0     0%    /dev/fd
/dev/dsk/c0t0d0s3    1015542  893738   60872    94%    /var
/dev/dsk/c0t0d0s4    5058110 4968663   38866   100%    /home
swap                  269872    6728  263144     3%    /tmp

References:

  1. Moving Sendmail's Maillog File
    Date: August 10, 2005
    MoonPoint Support

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