Jay, Try switching from WLC to WRR? (I'm guessing that you are using WLC).
2009/6/25 Jay Faulkner <[email protected]>: > Hey guys, > > We've been noticing some really strange behavior with keepalived/LVS when a > real_server fails. The behavior we see is that when a r_s fails, all the > persistent connections on that server fall over to a single server. > > For example: > > Server 1 - 25000 active conn. - 1500 inactive conn. > Server 2 - 35000 active conn. - 1000 inactive conn. > Server 3 - 20000 active conn. - 500 inactive conn. > > Server 2 fails. Instead of seeing all the traffic split between the remaining > real_servers, we see it all clump over to the same server > > Server 1 - 25000 active conn. - 1500 inactive conn. > Server 2 - failed > Server 3 - 55000 active conn. - 1500 inactive conn. > > Now, server 3 falls over and dies due to having too many connections on it > and becoming overloaded. > > We've seen this behavior consistently in all of our keepalived installations > (20 servers or so? Median of about 20 virtual_servers each), and I was > curious if this is configurable behavior, or even expected. > > Thanks! > > Jason Faulkner > Linux Engineer, Rackspace Email & Apps > [email protected]<mailto:[email protected]> > o: (540) 443-2101 (ex. 505-2101) > > _______________________________________________ > Please read the documentation before posting - it's available at: > http://www.linuxvirtualserver.org/ > > LinuxVirtualServer.org mailing list - [email protected] > Send requests to [email protected] > or go to http://lists.graemef.net/mailman/listinfo/lvs-users > -- Regards, Malcolm Turnbull. Loadbalancer.org Ltd. Phone: +44 (0)870 443 8779 http://www.loadbalancer.org/ _______________________________________________ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - [email protected] Send requests to [email protected] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
