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Am Donnerstag, 28. Mai 2009 14:51:33 schrieb Andre Nathan:
> Hello
>
> I have a working setup of LVS, and I'm trying to configure a backup
> machine for failover, with the virtual network interfaces configured as
> heartbeat resources.
>
> I've been using the same setup for some time without problems, but now I
> have installed a new pair of servers and I'm seeing the following
> behavior:
>
> When I start the master and backup daemons on both servers with
>
> ipvsadm --start-daemon master --mcast-interface eth1
> ipvsadm --start-daemon backup --mcast-interface eth1
>
> the ipvsadm command output in the backup server starts showing
> connections:
>
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP virtserver:mys wlc
> -> realserver1:mysql Route 1 1 35
> -> realserver2:mysql Route 1 1 44
>
> I have never seen this behavior before, and from the docs I believe it
> shouldn't happen, although the load balancing seems to keep working
> without problems.
>
> Does anyone know why could that happen?
>
> I'm running Linux 2.6.27 and ipvsadm 1.24.
>
> Thanks in advance,
> Andre
You are replicationg the state table. It is obious that you can see the
entries on the backup node, too.
Important is only: "Which of the nodes does have the virtual IP adress of the
cluster?" Through which node all traffic is routed?
Beware: In case of a failover you have to swap the master / backup roles. But
you can start the replication daemon are master and backup on both nodes ;-)
Greetings,
--
Dr. Michael Schwartzkopff
MultiNET Services GmbH
Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany
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