Thread: Re: [SSI-users] clustering why-to
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From: <bo...@bp...> - 2006-01-31 12:58:50
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Hi Alexandre I think that's the wrong way to solve your problem. Here is an idea, how = we've build a cluster: Hardware: We have 2 or more (tested with 4) diskless PC systems (IBM x336). Each = system has two fibre channel adapters (redundant) connectet over two = separate fc switches to a fc based SAN storage (IBM DS4300) with RAID5. Software: Suse Linux 9.2 (10.0 not yet tested) and OpenSSI 1.9.2 = (www.openssi.org). OpenSSI is a single system image cluster application. = That means, that the user and all his applications on top of this = cluster have to point of view of only one linux system. Why a cluster like this: - Loadbalancing over all nodes - High availability: if one node fails the cluster system goes on Stephan > -----Urspr=FCngliche Nachricht----- > Von: Alexandre CONRAD [mailto:aco...@ma...] > Gesendet: Dienstag, 31. Januar 2006 12:05 > An: ssi...@li... > Betreff: [SSI-users] clustering why-to >=20 >=20 > Hello, >=20 > I want to setup a clustering environement. I read many how-to's out=20 > there, but not many why-to's actually. >=20 > So my main question is: "would I need a cluster system for=20 > what I'd like=20 > to do ?" >=20 >=20 > 1/ Here is how my application works today: > I have 1 web server and 1 database server. I have multiple remote=20 > clients (PCs) that sends data every night the database=20 > server. There is=20 > a lot of information and the database is getting bigger and bigger=20 > pretty quickly. >=20 > Then a client (human) can connect to the web server and have=20 > a graphical=20 > interface to manipulate some statistics from the data in the database. >=20 > 2/ Here is my problem: > When a human client connects to the web server to make some=20 > statistics,=20 > 1 request takes a long time to process because a lot of data=20 > is parsed=20 > and computed. And it's taking too much time. >=20 > Today, my application works as a "test", but it's gonna get=20 > bigger and=20 > bigger with more and more client PCs that will send data to=20 > the database. >=20 > So I'm worried that my 1 database just won't handle it. >=20 > 3/ Here is my idea: > I want to keep 1 web server because I don't have much human=20 > clients that=20 > want to play with the statistics (low trafic). But because=20 > the database=20 > is getting bigger and bigger, I want to be able to add some extra=20 > storage over another database server. >=20 > So I got my self 3 servers for the database (dual Xeon + RAID5). I'd=20 > like to have all servers in a cluster seen as 1 logical=20 > database. That=20 > way, data would be shared over all 3 servers transparently, the web=20 > server would talk only to 1 ip address like if it was 1=20 > single database. >=20 > 4/ Here are the problems that could happend: > - If I run out of disk space, I'll add a 4th server inside=20 > the cluster=20 > and it will automaticly share data over the new server. >=20 > - If a server fails, I want to make sure I have data=20 > intergrety (if one=20 > fails, it can still run with the left servers). When the=20 > failed server=20 > is replaced, it will reconstruct it's data and be available again. >=20 >=20 > So here are my questions: > - Is my project feasable with my current hardware configuration ? > - Is clustering what I'm looking for ? > - What is clustering after all if what I'm talking about it=20 > not clustering ? >=20 > I'm in a little hurry for my porject... please help !! >=20 > Best regards, > --=20 > Alexandre CONRAD - TLV > Research & Development > tel : +33 1 30 80 55 05 > fax : +33 1 30 80 55 06 > 6, rue de la plaine > 78860 - SAINT NOM LA BRETECHE > FRANCE >=20 >=20 >=20 > ------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. Do you grep=20 > through log files > for problems? Stop! Download the new AJAX search engine that makes > searching your log files as easy as surfing the web. =20 > DOWNLOAD SPLUNK! > http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D103432&bid=3D230486& dat=3D121642 _______________________________________________ Ssic-linux-users mailing list Ssi...@li... https://lists.sourceforge.net/lists/listinfo/ssic-linux-users |