[ale] Cooperating with logrotate

[JK]

Brandon Checketts wrote:
> The process that is writing to the log needs to close and reopen the file
> handle.  Most applications support sending a HUP signal to tell the process to
> reload its configuration, reopen log files, etc.  If this is a custom program,
> then you would likely have to add support for that.  The exact method for doing
> so depends on the language.
> 
> Once you know how to get your application to reopen the log, then you would use
> a postrotate script in the logrotate config to trigger that.  As an example, the
> logrotate config for Apache does this:
> 
>     postrotate
>         /bin/kill -HUP `cat /var/run/httpd.pid 2>/dev/null` 2> /dev/null || true
>     endscript


Thanks, that's what I'm looking at doing.  Only problem is, it's a Java
program and there doesn't seem to be any way of installing a signal
handler, short of resorting to native code.  But I already have some
other channels for signaling the process, so it's doable.

Muchos gracias,

-- JK