sc_2111
Enthusiast
Enthusiast

Linux Cluster

To configure a cluster between 2 linux VM is it mandatory to use RDM as in MSCS ?

Is there a paper on how to configure cluster between 2 linux VM ?

thanks

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3 Replies
Paul_Lalonde
Commander
Commander

No, Linux clusters don't specifically require RDM.

Most Linux clusters use cluster filesystems such as Lustre or RedHat GFS. Generally, your "front end" (host) nodes will communicate with a storage node via a network transport (ie. iSCSI, GNBD) so an RDM mapping isn't completely necessary.

Check out:

http://www.redhat.com/software/rha/gfs/

http://www.clusterfs.com/

Regards,

Paul

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sc_2111
Enthusiast
Enthusiast

So can I start creating a cluster-in-a-box with 2 VM on the same ESX host using a "shared"" vmdk on a SAN DS and later , when a second ESX host is been available vmotion one VM to the second host ?

Thanks

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Paul_Lalonde
Commander
Commander

Yes... provided that the Linux VMs include some form of clustered filesystem.

Paul