Re: [webmin-l] Virtualmin Request - Apache Graceful Restart

[Jamie C. <jca...@we...>]

On Tue, 2005-03-08 at 07:18, Alan Dobkin wrote:
> Jamie,
> 
> When a new domain is added to virtualmin or an existing domain is
> removed, and possibly for other changes as well, it causes apache to be
> stopped and restarted, which kills all the existing connections.   On a
> busy server, especially one serving multiple simultaneous large file
> downloads, this is a huge disruption in service.  Instead, is it
> possible to use the Graceful Restart function?  This would accomplish
> the same goal of reloading the configuration files without disrupting
> any existing connections.
> 
> Signal: USR1
> 
>     |apachectl -k graceful|
> 
> The |USR1| or |graceful| signal causes the parent process to /advise/
> the children to exit after their current request (or to exit immediately
> if they're not serving anything). The parent re-reads its configuration
> files and re-opens its log files. As each child dies off the parent
> replaces it with a child from the new /generation/ of the configuration,
> which begins serving new requests immediately.
> 
> 
> See the apache docs for more info.:
> http://httpd.apache.org/docs-2.0/stopping.html#graceful
> 
> Incidentally, I have also made this change in the Apache module
> configuration for the "apply configuration" command.  I think this
> should be the default in future versions of webmin, or at least allow
> both as options.

I would like to be able to do this, but I've found that Apache doesn't
fully detect new virtual hosts if you just do a graceful restart,
especially if SSL is being used .. at least on my system. Have they
perhaps fixed this in Apache 2.0 though?

 - Jamie