Re: [SLE] What does logrotate do?

From: Patrick Shanahan (paka_at_wahoo.no-ip.org)
Date: 09/28/04

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    Date: Mon, 27 Sep 2004 23:03:06 -0500
To: suse-linux-e@suse.com

    * Paul W. Abrahams <abrahams@acm.org> [09-27-04 22:03]:
    > On Monday 27 September 2004 10:08 pm, James Knott wrote:
    >
    > > What it does, is at a schedule, create dated copies of the various
    > > log files, with the oldest file being deleted. This is to prevent
    > > the disk filling up with logs and also separating parts of the log by
    > > date, to make it easier to find info.
    >
    > So I guess it's not particularly helpful for what I'd like to do with a
    > specialized logfile: delete all entries that are more than two weeks
    > old. I could use "tail" in a short shell script to do a length-based
    > truncation, but it's not clear how to do a date-based truncation,
    > assuming every entry starts with a date. It's programmable, of course,
    > but not simple.

    Why dismiss something without looking into it? The description
    provided above is accurate but very terse. You should read the
    man/info pages before making rash decisions.

    > Is there some kind of utility around that does date-based truncation?

    Certainly, and the parameters are simple and straight forward with
    good documentation. The utility you want is *logrotate*.

    ie:

    /etc/logrotate/apache2 (partial):

    /var/log/apache2/access_log {
        compress compress the archive
        dateext rename by date
        maxage 365 oldest before rotate
        rotate 99 delete 100th file
        size=+4096k max file size before rotate
        notifempty only rotate if not empty
        missingok no error if missing
        create 644 root root permissions on archive
        postrotate do commands after rotate
         /etc/init.d/apache2 reload restart apache2
        endscript finished this script
    }

    *read* the man/info file.....

    I rotate my fetchmail logs:

    /var/log/fetchmail {
        compress
        dateext
        maxage 365
        rotate 99
        size=+1024k
        notifempty
        missingok
        copytruncate
    } 

    -- 
Patrick Shanahan                        Registered Linux User #207535
http://wahoo.no-ip.org                        @ http://counter.li.org
HOG # US1244711           Photo Album:  http://wahoo.no-ip.org/photos
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