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Hello again,
looks like it was too late yesterday, so I've forgotten some import-
ent information.
We use SLES9 Patchlevel 3
with 2.6.5-7.244-smp Kernel on a fujitsu siemens (rx300S2) server.
There is a broadcom nic inside
NetXtreme BCM5721 Gigabit Ethernet PCI Express
which uses the tg3 module (this interface we used for the VIP).
Additional we have an Intel Corporation 82541PI Gigabit Ethernet
Controller (e1000 modul).
We are trying now to change the interface for Loadbalancing.
Again thanks for your attention.
So long,
Jan
> Hello,
>
> even though I have red a lot mails from the list, I haven't
> found a case like our.
> We have some trouble with our LVS-Cluster. Since a while we
> evaluate a 6 Node-Cluster (3 Realserver/1Devel/2Directors) as
> a Mail Gateway.
>
> The Setup is the following:
>
> The 2 Director (failover) running direct routing.
> Setup is done by ldirectord(1.77.2.41) which is invoked by heartbeat.
> Addionally there are two drbd-devices for some configfiles
> and data (no ldirectord data/config in there).
>
> On the realserver is some MTA(postfix,amavisd-new etc.) running.
>
> When we starting the setup everything is running fine, the
> heartbeat comes up and starts the ldirectord with the
> following config:
>
> -------------------------------------------------
> # Global Directives
> checktimeout=10
> checkinterval=2
> autoreload=yes
> quiescent=yes
>
> #Sample configuration for an smtp virtual service.
> #Fallback setting overides global
> virtual=10.10.x.60:25
> real=10.10.x.63:25 gate 100
> real=10.10.x.64:25 gate 100
> real=10.10.x.65:25 gate 100
> service=smtp
> scheduler=lc
> checkport=25
> checktype=connect
> protocol=tcp
> -------------------------------------------------
>
> so ipvsadm -Ln gives us the following output:
>
> -------------------------------------------------
> IP Virtual Server version 1.2.0 (size=4096) Prot
> LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP 10.10.x.60:25 lc
> -> 10.10.x.63:25 Route 100 0 0
> -> 10.10.x.64:25 Route 100 0 0
> -> 10.10.x.65:25 Route 100 0 0
> -------------------------------------------------
>
> Everything works fine and the Director balances the incoming
> connections to the 3 realservers.
> But after a while (sorry dont know a specific time) the LB
> stops sceduling and the incoming connections will send to the
> last choosen realserver. Really strange is that after this
> happens, you can unload the modules (ip_vs/ip_vs_lc) and
> after the ip_vs module got reloaded the traffic continues
> send to the last realserver.
> For testing i've writen the output of ipvsadm -Ln( and c)
> with timestamp to a file. The last entry was this:
>
> IP Virtual Server version 1.2.0 (size=4096)
> Prot LocalAddress:Port Conns InPkts OutPkts InBytes
> OutBytes
> -> RemoteAddress:Port
> TCP 10.10.x.60:25 17617 1872891 0
> 2541M 0
> -> 10.10.x.63:25 5927 614901 0
> 832431K 0
> -> 10.10.x.64:25 5964 663196 0
> 902503K 0
> -> 10.10.x.65:25 5726 594794 0
> 806841K 0
>
> (No outgoing Pakets, because the mails are dropping in a sink)
>
> Restarting the ldirectord has the same effect, everthing
> continues doing wrong.
>
> I cant get a conclusion out of the symptoms.
> Every help is appreciated and thanks for your time reading this.
>
> Jan
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