On Mon, 2005-02-14 at 10:59 +0100, Gerard Meijer wrote: > ----- Original Message ----- > From: "Peter Risdon" <[EMAIL PROTECTED]> > To: "Gerard Meijer" <[EMAIL PROTECTED]> > Cc: <freebsd-questions@freebsd.org> > Sent: Monday, February 14, 2005 10:49 AM > Subject: Re: live mirroring > > > > On Mon, 2005-02-14 at 10:22 +0100, Gerard Meijer wrote: > >> Hi all, > >> > >> I have a question. I want to set-up a site on 3 identical FreeBSD > >> servers, using Round Robin to distribute the load. > >> > >> The site will be running some .cgi and .php scripts and when those > >> scripts make changes to the configuration files of the sites, they need > >> to be spread automatically to the other two servers. Also when files are > >> uploaded to one server, I need them to automatically upload to the other > >> servers to. > >> > >> What is the best program to do this? Or am I looking at it the wrong way > >> and should I do it different? > > > > Mirroring is one approach, but here's another: > > > > One of the servers holds the data and nfs exports it to the other two. > > The webroot is on the mounted nfs filesystem. This also eliminates > > potential data synchronisation problems if you have different > > filesystems having overlapping/incompatible changes made to them. It > > lets you invest in one really resilient storage system instead of three > > possibly inferior ones. > > I don't really understand this approach. Where can I read more about nfs?
man mountd and man exports, together with the handbook: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/network-nfs.html Here's a page with diagrams - it's for a mail server cluster, the storage is an external raid system and there are two nfs servers, to provide extra resilience, but the idea is the same: http://www.shupp.org/maps/ispcluster.html Peter. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
