Logrotate

[Philippe de Rochambeau]

Thanks Ed.

What is the final || true for? Must the logrotate script always return 
true?

Philippe



On 6 Jun 2005, at 16:58, Ed Wilts wrote:

> On Mon, Jun 06, 2005 at 04:46:53PM +0200, Philippe de Rochambeau wrote:
>> I am having trouble understanding the following /etc/logrotate.d/ file
>>
>> httpd:
>>
>> /var/log/httpd/*log {
>>     missingok
>>     notifempty
>>     sharedscripts
>>     postrotate
>>         /bin/kill -HUP `cat /var/run/httpd.pid 2>/dev/null` 2>
>> /dev/null || true
>>     endscript
>> }
>> ~
>>
>> The " /bin/kill -HUP `cat /var/run/httpd.pid 2>/dev/null` 2> /dev/null
>> || true " line apparently means "kill the httpd daemon". But why would
>> you want to kill the httpd daemon after rotating the logs?
>
> kill -HUP means that you don't want to actually kill the daemon but to
> send it a signal to wake up and re-read its configuration files and
> re-open its log files.  In this case, it will open new copies of
> access_log, error_log, etc.
>
>> Furthermore, how would you write the above configuration file to 
>> rotate
>> log files whose names contain the current date (e.g., 20050606.log,
>> 20050607.log, etc.)?
>
> In the postrotate section, rename the log file from whatever.log.1 to
> the date format.  Remember, though, that you have to handle multiple
> files.  You don't want to rename both access_log.1 and error_log.1 to
> 20050606.log.
>
> If you do rename the log files, note that you'll be responsible for
> cleaning them up.  logrotate normally will delete older files, keeping
> by default 4 versions.  So, when it comes time to rotate log.4, it will
> be deleted instead of being renamed to log.5.
>
> -- 
> Ed Wilts, RHCE
> Mounds View, MN, USA
> mailto:ewilts at ewilts.org
> Member #1, Red Hat Community Ambassador Program
>
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