Graeme Fowler wrote: > On Thu, 2008-03-06 at 12:51 -0500, LDB wrote: >> What HOWTO???? > > *The* HOWTO. The one documenting just about all there is to LVS: > > http://www.austintek.com/LVS/LVS-HOWTO/ > > It's been compiled over the years from many mailing list posts, pieces > of documentation and other sundry sources. It's *very* detailed. I > recommend you read at least some of it. > > However, I think you have fundamentally misunderstood one of the > principal problems of LVS-DR. Back to first principles: > > For LVS-DR to work properly, the VIP must be present on both the > director(s) and the realserver(s). In systems where the director's IP > (the DIP) and the realservers' IPs (the RIPs) are on the same network - > like yours - then the realservers can respond to ARP requests for the > VIP, which results in the issue you see. > > Essentially, all the traffic ends up being handled directly by a (or > more than one) realserver and the director doesn't see it. > > This means you have to "hide" the loopback interfaces on the > realservers. See: > > http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.arp_problem.html > > for a much more detailed explanation of the problem, and the myriad ways > to fix it. For a 2.6 kernel, use the arp_ignore/arp_announce sysctls. > > I really, really recommend you read the HOWTO. Alternatively, read > Horms' excellent synopses and examples for Ultramonkey, the most > relevant of which is probably: > > http://www.ultramonkey.org/3/topologies/hc-ha-lb-eg.html > > Graeme > > > _______________________________________________ > LinuxVirtualServer.org mailing list - [email protected] > Send requests to [EMAIL PROTECTED] > or go to http://lists.graemef.net/mailman/listinfo/lvs-users > >
Graeme .. Thank you much!!! :) LDB _______________________________________________ LinuxVirtualServer.org mailing list - [email protected] Send requests to [EMAIL PROTECTED] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
