On Thu, Sep 08, 2011 at 12:17:48PM -0400, Soffen, Matthew wrote: > Lars, > > Did you go to the links ? > > http://linux-ha.org/FAQ#heavy_load - Leads to a page with a watermark "This > web page is no longer maintained. The information presented here exists only > to avoid breaking historical links"
[I know, I myself put that sign there ;) after others made the decision to abandon that transcluded-from-MoinMoin-wiki-site, and move to mediawiki.] Still, "unmaintained" does not mean wrong, does it? He is using a historical version of heartbeat, right? These links in the log are _exactly_ those historical links that watermark talks about. The SplitBrain page even has been moved (and redirects to) the current mediawiki, you end up at http://linux-ha.org/wiki/SplitBrain BTW, The FAQ page as well, though apparently there the redirect was not implemented, because the new FAQ page does only mention a select few of the "historical" questions. http://linux-ha.org/wiki/FAQ#Heavy_Load ... > If they unclear, could you point out where, > and how can we improve the wording so it will be clear? > > > Anyways, if your intention was to test node failure, you should test > node failure, not total cluster communication breakdown aka split-brain, > which is what you do here. > > > If your intention actually was to test split-brain, > you should be aware of the implications, and what to expect. > > > The only remotely useful thing heartbeat in haresources mode can > do to recover from a split brain is to stop everything, everywhere, and > restart from scratch. > > Which is what you observe here. > > crm mode, aka Pacemaker won't handle this so much differently: it will > restart all resources and dependencies that seem to run more often than > they should, according to the then merge configuration. > > To avoid split brain, you need to implement fencing, > typically that means stonith. > > You should also read http://ourobengr.com/ha Cheers, -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
