On Fri, Jul 25, 2008 at 06:09:24PM -0500, Ron Johnson wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 07/25/08 16:32, Bob wrote: > > Here's what I want: > > I have a vmware server running on etch, hosting 4 VM's. > > I want these 4 VM's to be hosted in such a way, that should anything > > fail on 1 VM host, there is another providing seamless service. I want > > to do this with the 2 pc's I already have, each with 2 NIC's, and no > > other hardware. > > > > My basic question - what's the best solution to accomplish this? > > > > Here's what I've looked at: > > drbd/HA (heartbeat) - allows you to raid1 a disk partition between 2 > > pc's over ethernet > > issues: in the default primary/secondary failover config, if > > primary fails, there is some period of time (even if only seconds), > > required for the secondary to become primary - I can only assume this > > would mean rebooting all the VM's. > > however - you can run drbd in a primary/primary config - this > > sounds like what I want. But it sounds like I need a clustering files > > system to do this like GFS. After countless hours researching this, > > I'm still not sure how to do it - do I need GFS? OCFS? NBD? > > > > Now drbd isn't really a cluster, it's just raid1-ing 2 pc's - this > > could be all I need. > > But - would a REAL cluster be a better solution? I believe a cluster > > could provide load balancing, or at least optimized use of all > > available hard disk heads. Although, if drbd needs GFS, then in fact, > > doesn't this become a real cluster? > > > > What would a clustering solution look like? > > which is the best filesystem to use - GFS/OCFS ? > > would drbd still be needed if GFS is used? > > > > Any ideas, experiences, help - greatly appreciated! > > A *real* cluster would entail running OpenVMS (since clustering is > built deep into the OS) on either HP Integrity servers or used > AlphaServers, and either buying little SAN boxes or using HBVS > (Host-Based Volume Shadowing, which is similar to llvm, but has been > in enterprise use for 25 years) on the disks. :) Tree hugger :) > > With this, the OS will allow you to use both nodes concurrently on > the same data files, and in case of a node crash, the other node > will clean things up so that you don't have any corrupted data. > > Next best would be Tru64 (a.k.a. OSF/1) Unix on AlphaServers, > because much of the clustering technology from VMS was ported to Tru64. Best to get some sort of shared storage, like a disk shelf that allow multiple connections - ie to server to connect at the same time (this can be done with scsi but usually with FC ), I believe esx has its on file system so just load it up, present the disk space to the 2 server and your off. > > - -- > Ron Johnson, Jr. > Jefferson LA USA > > "Kittens give Morbo gas. In lighter news, the city of New New > York is doomed." > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > > iEYEARECAAYFAkiKXSMACgkQS9HxQb37XmeHbgCdE6RIK8DTM8w6r/R10A4tEkUn > 5LcAoM06UUQGOjAI2L+E74RDuKP8P9eO > =v/H+ > -----END PGP SIGNATURE----- > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org > > -- "I want to thank you for coming to the White House to give me an opportunity to urge you to work with these five senators and three congressmen, to work hard to get this trade promotion authority moving. The power that be, well most of the power that be, sits right here." - George W. Bush 06/18/2001 Washington, DC
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