Am Mit, 2003-10-08 um 15.43 schrieb Ryan Nowakowski: > Hey folks, > > I'm trying to setup a cheap debian web cluster using tools from the > linux-ha project. We're using heartbeat and mon to monitor services > and do the failover. We'd like to setup shared disk space without > buying any new hardware. We have three cheap servers in the cluster. > We're thinking about using drbd for the shared disk space.
As you already said: Use drbd for the shared storage and heartbeat as a cluster manager. That way you'll get an easy to setup failover-cluster completely based on OSS and without any "special" hardware. BUT this is not a load-balanced cluster, only one machine will handle the load, it won't be spread about both machines. DRBD currently cannot run in active-active (i.e. most filesystems can't and the GFS support is not yet ready). You'll have two machines, one handles the requests - if this machine fails, the second one will take over and resume processing incoming requests, but until then it sits there and does nothing (well, monitoring the primary node - but that doesn't count). Speaking of "web-clusters" you probably mean a load-balanced HTTP cluster (with HA features). You'll need some sort of loadbalancer (see one of the recent threads about cluster and balancers). Neither DRBD (shared storage) nor heartbeat (cluster-manager) will do this for you. Instead you could use LVS (www.linuxvirtualserver.org) > How have others setup web clusters using debian? We're not adverse to > backporting packages or using outside apt sources if necessary. Either way, you don't need any backports - almost (?) everything should be packaged for Debian. If you want the latest versions you'll have to compile some sources by yourself though. best regards, Markus -- Markus Oswald <[EMAIL PROTECTED]> \ Unix and Network Administration Graz, AUSTRIA \ High Availability / Cluster Mobile: +43 676 6485415 \ System Consulting Fax: +43 316 428896 \ Web Development -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
