Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On 10-09-30 10:39 AM, raveenpl wrote: > > Hello, > > I would like to have Primary/Primary cluster. The most wondering in this > solution is for me how to cope with split-brain sitaution. > > I know that they are to two ways to fence nodes (on resource level and using > STONITH) - but how they work in dual-primary mode? Maybe somebody could give > step-by-step example? > > Cheers > RaveenPL I use it with Red Hat Cluster Services and their fence daemon. I've got an in-progress How-To, but it's not finished enough to post publicly here. If you're okay with that, and are interested, send me an email off-list and I'll send you the link. The setup is: - RAID Level 1 on either node. - Cluster built using RHCS Cluster Stable 3 on Fedora 13 (until RHEL 6 is released). - DRBD across the two nodes. - CLVM on top of the DRBD resource. If your question is more to do with recovering from split brain, then it's as follows. Note that in this case, I chose 'Node 1' to be the most up to date node. You'll need to make that decision yourself in the real world. -= Node 1 -= Node2 modprobe drbd modprobe drbd drbdadm attach r0 drbdadm attach r0 drbdadm invalidate r0 drbdadm connect r0 drbdadm connect r0 drbdadm primary r0 drbdadm primary r0 -- Digimer E-Mail: linux at alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org