I've spent the last several months learning drbd, pacemaker etc ... drbd itself is surprisingly simple to get up running. Im yet to experience significant problems with it.
Pacemaker has documentation, but I've certainly found it a tad difficult to locate, in the initial days at least of starting with pacemaker. There is rarely enough documentation for anything, specifically Linux related, but improvements are always made (and welcome) in documentation as awareness increases. Anyway, good luck with finding any alternatives. You'll probably end up blowing a wad of cash before finding something with a mere tenth of pacemakers abilities. James. Sent from my iPhone On 8 Dec 2010, at 20:12, "Igor Chudov" <[email protected]> wrote: > Florian, it is very possible that I overlooked some valuable > documentation. It is also possible that things have improved since I > tried it last summer. > > However, at present, my question was to locate and consider > alternatives to drbd and heartbeat. > > I will peruse the links that you provided, as, probably, we will end > up using the Heartbeat setup that I created as a replacement. > > Functionality of Heartbeat 1.0 was fully sufficient for our needs. > > Igor > > On Wed, Dec 8, 2010 at 1:53 PM, Florian Haas <[email protected]> wrote: >> 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 >> >> >> _______________________________________________ >> Linux-HA mailing list >> [email protected] >> http://lists.linux-ha.org/mailman/listinfo/linux-ha >> See also: http://linux-ha.org/ReportingProblems >> > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
