On Thu, 2009-12-17 at 16:37 +0100, Michael Schwartzkopff wrote: > Am Donnerstag, 17. Dezember 2009 16:22:08 schrieb darren.mans...@opengi.co.uk: > > I'm using ldirectord to load LVS modules rather than the ipvsadm init > > script. Man ipvsadm says you need to start the ipvsadm sync daemon using > > --start-daemon state and --stop-daemon. As ldirectord is doing the loading > > / unloading of ipvsadm rules then I think the ldirectord script itself > > needs to support ipvsadm daemon sync states? > > > > Regards > > Darren > > Could be. But if you use a resource manager like pacemaker to control > ldirectord the sync daemon would be switched off in the passive node. So no > sync here. > > controlling the ldirectord in the cluster has the advantage that the cluster > can react if the ldirectord dies. > > If you would like to have ldirectord also to control the sync of ipvsadm you > would have to develop a multistate resource agent. Something like: > - Stopped: sync and ldirectord stopped > - Started as slave: sync started, ldir stopped > - Started as master: sync and ldir started.
You can, without any negative result, run both master and backup sync daemon on both hosts. I always have them set to a different sync-id, but perhaps that's not even necessary: node1 $ ipvsadm --start-daemon master --syncid 50 node1 $ ipvsadm --start-daemon backup --syncid 51 node2 $ ipvsadm --start-daemon backup --syncid 50 node2 $ ipvsadm --start-daemon master --syncid 51 Just create a simple init script for it, or put it in rc.local. Maybe you would have to do a modprobe vs or something similar before starting the daemons if you don't have ipvs built into the kernel. I realize you could somehow create a fancier way than this, but i don't want to make it more complicated. LVS is hard enough already. -- Léon _______________________________________________ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
