On 6/13/12 3:04 PM, Arnold Krille wrote: > On 13.06.2012 17:56, William Seligman wrote: >> A data point: >> >> On my cluster, I have two dedicated direct-link cables between the two nodes, >> one for DRBD traffic, the other for corosync/pacemaker traffic. Roughly once >> per >> week, I get a "link down" messages on one of the nodes: > > A) use several communication-rings in corosync. We use one on the > regular user-network and a second on the storage-network. One fails, no > problem, corosync doesn't sense a need to fence something.
I have a cman+pacemaker configuration. I tried to set up rrp, but it never worked; unfortunately, I didn't save any error messages or versions of cluster.conf to share on this group. I didn't think much of it; I'm using RHEL6.2, and cman+rrp support was described as "experimental". > B) use bonded/bridged interfaces for the storage-connection. We > currently have our storage-network aka vlan17 as vlan on eth0 of all the > servers and untagged on eth1, using a bond with active-backup mode where > eth1 is the primary and vlan17 the backup. This is an intriguing idea. I haven't played with bonded links before, much less with one link on a VLAN. I'll do some research and see what it would take it set it up. Thanks for the idea! -- Bill Seligman | Phone: (914) 591-2823 Nevis Labs, Columbia Univ | mailto://selig...@nevis.columbia.edu PO Box 137 | Irvington NY 10533 USA | http://www.nevis.columbia.edu/~seligman/
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