Laurent, I don't know if this is a type, but the master host is the one with the _lowest_ priority.
-Andy -----Original Message----- From: Laurent Bardi [mailto:[email protected]] Sent: Monday, April 16, 2012 8:28 AM To: Emilio Campos; [email protected] Subject: Re: [Zenloadbalancer-support] cluster with 3 machines ? Emilio Campos a écrit : > Laurent can you be more specific? Where is the sense? Well, at first, i came from the Keepalived world, so i m not familiar with Carp/Ucarp. I use 3 VMWare ESX servers. Into those servers i use a lot of redundant virtualized machines/services. (IE for ldap i ve 3 hosts (virtualized machines) one by ESX server). Each host has it own VIPs, one which manage the RIP of the same host(with the highest priority) 2 other VIP which manage the others host in case of failure. (each host is in fact the service server+load-balancer, 3 VIP : 10.64.100.2 10.64.100.12 10.64.100.22 for 3 hosts with RIP 10.64.101.2 10.64.101.12 10.64.101.22 so for the first host (RIP = 10.64.101.2) , this host manage 3 VIP : 10.64.100.2 (master, prio = 150) 10.64.100.12 (backup1, prio = 140) 10.64.100.22 (backup2, prio = 130) for the second host (RIP = 10.64.101.12) , this host manage the same 3 VIP : 10.64.100.2 (backup2, prio = 130) 10.64.100.12 (master, prio = 150) 10.64.100.22 (backup1, prio = 140) for the third host (RIP = 10.64.101.22) , this host manage the same 3 VIP : 10.64.100.2 (backup1, prio = 140) 10.64.100.12 (backup2, prio = 130) 10.64.100.22 (master, prio = 150) With this scheme, when one machine fails, one of the 2 other (with the highest prio) take the hand. For named services, i've in my DNS the same IN A record (Round-Robin load-balancing) (IE : server IN A 10.64.100.2 server IN A 10.64.100.12 server IN A 10.64.100.22 ) As you notice, i use RFC 1918 for my IP, and it is compatible with NAT (IE 10.64.100.2 10.64.100.12 10.64.100.22 are NATed with 3 real IP address of my network) Now, i've found Zenloadbalancer (really nice job!) and i was thinking of putting 3 special hosts, (one in each ESX) which will make the whole job of load-balancing/fail-over. So, if you can tell me the trick :-} Many thanks by advance (PS: sorry for my English, i m a bloody frenchy :-}) -- Laurent BARDI / RSI CNRS-IPBS / CRSSI DR14 INSTITUT de PHARMACOLOGIE et de BIOLOGIE STRUCTURALE Tel : 05-61-17-59-05 http://www.ipbs.fr/ Fax : 05-61-17-59-94 Laurent.BardiATipbs.fr CNRS-IPBS 205 Route de Narbonne 31400 TOULOUSE FRANCE ... J'étais indéniablement misanthrope. Je voulus traverser à gué un marigot infesté d'imbéciles. Quand j'atteignis l'autre rive, j'étais devenu philanthrope. ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Zenloadbalancer-support mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Zenloadbalancer-support mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support
