Date: Wed, 17 May 2006 22:07:01 +0400 From: dima <_pppp@mail.ru> To: Derek Ragona <derek@computinginnovations.com> Cc: freebsd-net@freebsd.org, Ludovit Koren <lk@tempest.sk> Subject: Re[2]: Cluster solution Message-ID: <E1FgQQH-0006RO-00._pppp-mail-ru@f11.mail.ru> In-Reply-To: <6.0.0.22.2.20060517110722.026767f0@mail.computinginnovations.com>
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> You'd need to be more specific particularly with how much money you want to > spend. HA Clusters are expensive to build. The question was about FreeBSD. Do you know any HA solutions working with it? My company would be glad to spend quite a lot if there were one. Don't top-post, please. > > -Derek > > At 10:18 AM 5/17/2006, Ludovit Koren wrote: > > > >Hi, > > > >I need help in designing of cluster solution based on FreeBSD. I tried > >carp for switching IP addresses, it seems to work ok. The solution is > >suitable for DNS, MTA, static web pages, web proxy and reverse proxy. > > > >I didn't find anything quite suitable for dynamic web pages with PHP > >and MySQL backend. I found just master and slave replication and > >clustering in MySQL. There could be problem if master fails with > >automatic promotion of slave to master and with the resynchronization > >of database after recovery of master database. We've built a setup for dynamic pages on CARP and mod_backhand (apache module). It doesn't scale to more than 50 application servers though. The shared storage is a big problem. All the well-known (?) SAN filesystems doesn't work on FreeBSD. We're testing FreeBSD NFS client for stability (see my thread on this list); NFS server doesn't seem to be ready for production use. We're going to purchase a clustered NetApp solution (now testing on Solaris as NFS server). You can apply a "circle" replication using standard MySQL features. This method is used in livejournal and officially admitted by MySQL AB; it doesn't provide scalability though. We're trying to make 2 "master + multiple slaves" hierarhies; the solution is not ready yet. If PostgreSQL is an option in your project it provides a better idea (see pgcluster). > > > >Has anybody any experience with described setup. Howtos, pointers, > >links about configuration and software solutions are very appreciated. > > > >Thanks in advance. > > > >Regards, > > > >lk > >_______________________________________________ > >freebsd-questions@freebsd.org mailing list > >http://lists.freebsd.org/mailman/listinfo/freebsd-questions > >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > >-- > >This message has been scanned for viruses and > >dangerous content by MailScanner, and is > >believed to be clean. > >MailScanner thanks transtec Computers for their support. > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > MailScanner thanks transtec Computers for their support. > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >
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