compress the log files

UNIX for Advanced & Expert Users
1

Hi,
I have an application which creates the logs in a date wise.
like,

tomcat_access_log.2009-09-12.log
tomcat_access_log.2009-09-11.log
tomcat_access_log.2009-09-10.log
tomcat_access_log.2009-09-09.log
tomcat_access_log.2009-09-08.log
tomcat_access_log.2009-09-07.log

Now my requirement is to compress all the log files and keep only last 5 days compressed logfiles always.

For ex:

If today is 10/09/2009 ( mm/dd/yyyy)
then my log directory ( /var/log/appn) should looks like, 

tomcat_access_log.2009-10-09.log
tomcat_access_log.2009-10-08.log.gz
tomcat_access_log.2009-10-07.log.gz
tomcat_access_log.2009-10-06.log.gz
tomcat_access_log.2009-10-05.log.gz
tomcat_access_log.2009-10-04.log.gz

I tried to get it done using logrotate, but I couldn't.

It is really thankful, if you give, even some other mechanism to compress and keep only last 5 days logs.

2

logrotate

3 
Before logrotate


-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-10-01.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-30.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-29.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-28.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-27.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-26.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-25.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-24.log
-rw-r--r-- 1 root    root          0 Oct  9 02:46 tomcat_access_log.2009-09-23.log


content of /etc/logrotate.conf

/var/log/appn/*.log {
 daily
 compress
 rotate 5
}

After logrotate

-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-10-01.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-10-01.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-30.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-30.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-29.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-29.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-28.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-28.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-27.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-27.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-26.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-26.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-25.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-25.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-24.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-24.log
-rw-r--r-- 1 root    root         20 Oct  9 02:54 tomcat_access_log.2009-09-23.log.1.gz
-rw-r--r-- 1 root    root          0 Oct  9 02:54 tomcat_access_log.2009-09-23.log

Its compressing all the log files and its not removing log files. Any input on this?

4

Kindly review my last input on this..

Any help is really appreciated..

5

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---------- Post updated at 14:20 ---------- Previous update was at 14:18 ----------

To keep logrotate from creating or truncating the original logs, set these options:

nocreate
nocopy
nocopytruncate

which are all described in the man page:

       nocopy Do  not copy the original log file and leave it in place.  (this
              overrides the copy option).


       nocopytruncate
              Do not truncate the original log file in place after creating  a
              copy (this overrides the copytruncate option).


       nocreate
              New  log  files  are  not  created  (this  overrides  the create
              option).
6

How about ...

/var/log/appn/*.log {
   daily
   rotate 5
   postrotate
      /etc/init.d/tomcat restart
   endscript
   compress
}