On 12/08/2010 08:39 PM, Igor Chudov wrote: > On Wed, Dec 8, 2010 at 1:32 PM, Serge Dubrouski <[email protected]> wrote: >> Taking into account "simple" the answer is no. You can try RedHat >> Cluster Suite on CentOS, but that's not simple. >> >> What's wrong with DRBD/Pacemaker/Corosync ? > > DRBD/Pacemaker was complicated, documentation did not exist or did not > match the behavior,
http://www.drbd.org/users-guide/ch-pacemaker.html > the GUI was broken and never really worked. http://www.drbd.org/mc/management-console/ > Config > files were completely opaque. http://linux-ha.org/doc/re-hacf.html http://linux-ha.org/doc/re-authkeys.html http://www.drbd.org/users-guide/re-drbdconf.html > I spent weeks on this without having > something that could work and was documentable. http://www.linbit.com/en/products-services/linbit-cluster-stack-support/ http://www.linbit.com/en/education/training-schedule/ http://www.linbit.com/en/education/tech-guides/ > Then I got the DRBD/heartbeat to work without Pacemaker, however, its > reliability leaves much to be desired. http://theclusterguy.clusterlabs.org/post/178680309/configuring-heartbeat-v1-was-so-simple > For example, if both systems > come up at the same time, they cannot decide who gets the resource. I > did a hack to fix that (restarting heartbeat after boot of one of the > systems) but that did not leave me with a warm and comfortable > feeling. > > Then once in a while DRBD would stop syncing. > > I need to replace our old, aging corporate DRBD/Heartbeat network > storage implementation, which always worked, but the servers are now > getting old. I am feeling very uncomfortable about using what I have > for replacement. http://www.linbit.com/en/education/tech-guides/highly-available-iscsi-with-drbd-and-pacemaker/ http://www.linbit.com/en/education/tech-guides/highly-available-nfs-with-drbd-and-pacemaker/ Sure, we have zero documentation. Cheers, Florian
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