Hi, if i were you, consider making XEN only HA (using the xen RA ) . Loadbalancing takes place if you have load. And Loadbalancing + HA usually means to have at least n+1 ressources available. But if 1 of 2 ressources is already busy with drupal sites - loadbalancing above the 2nd isn't a good idea, because then you loose HA (too few ressources to get along if one of the two nodes failed then) .
So maybe get a 3rd node, integrate it into your setup, then you'll have enough to loadbalance across 2 of them and have one available in terms of failure. See - your goals need to be redefined. kind regards, Malte Geierhos > > Hi > > I probably just didn't explain myself too well yesterday - not enough coffee > yet. Maybe if I explain what I'm trying to do, then you can give an opinion > on the best way to go. > I have two physical machines, now with two virtual nodes (Xen) on both. All > the nodes are using Ubuntu server 8.04 as an OS. One (LB1 and LB2), has > HAProxy and Heartbeat. The other (WEB1 and WEB2) has a LAMP setup along with > ISPConfig to aid in setting up web sites. I also have Gb NIC's in both with > a crossover cable, just for rsync, and DB replication. > We will be hosting several web sites, most which are very basic, but a > couple will be Drupal CMS sites, with moderate traffic. The CMS sites will > be the ones that will also need SSL. I want auto failover, but I've never > made up my mind on if we really need load balancing. If I get rid of the > load balancer, I can remove the LB nodes, and just use Heartbeat with the > web server. I know that sounds like the simplest way to go, but am I > shooting myself in the foot by removing the possible load balancer need in > the future. If I keep it as it is, then I need to get SSL working through > HAProxy, which is looking a bit complicated. So that's the saga so far. I > just need to decide which way will be the best, but I'm running out of time > because I need to get this operational. > Thanks for the help. > > Tom > > -- Malte Geierhos Serverbetreuung / Administration SnapScouts.de Snapscouts Limited Zweigniederlassung Görlitz Krischelstraße 14 02826 Görlitz Fax: +49 (0) 35 81 / 66 72 53 Mobil: +49 (0) 1 51 / 27 00 22 70 E-Mail: [email protected] Web: http://www.snapscouts.de Geschäftsführer: Thomas von Skrbensky Registergericht: Dresden HRB 25880 USt-IdNr.: DE254464823 Zweigniederlassung der Snapscouts Limited 69 Great Hampton Street Birmingham, B18 6EW Handelsreegister für England & Wales Unternehmen Nr.: 6198239 Diese Information ist ausschließlich für den Adressaten bestimmt und kann vertrauliche oder gesetzlich geschützte Informationen enthalten. Wenn Sie nicht der bestimmungsgemäße Adressat sind, unterrichten Sie bitte den Absender und vernichten Sie diese E-Mail. Anderen als dem bestimmungsgemäßen Adressaten ist es untersagt, diese E-Mail zu lesen, zu speichern, weiterzuleiten oder ihren Inhalt, auf welche Weise auch immer, zu verwenden. Wir verwenden aktuelle Virenschutzprogramme. Für Schäden, die dem Empfänger, gleichwohl durch von uns zugesandte mit Viren befallene E-Mails entstehen, schließen wir jede Haftung aus. _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
